diff --git a/CMakeLists.txt b/CMakeLists.txt
index 94c6bed23..20e0a40a1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,15 +8,9 @@ set (RELEASE_SERVICE_VERSION "${RELEASE_SERVICE_VERSION_MAJOR}.${RELEASE_SERVICE
 
 project(kdeconnect VERSION ${RELEASE_SERVICE_VERSION})
 
-if (SAILFISHOS)
-    set(KF5_MIN_VERSION "5.36.0")
-    set(QT_MIN_VERSION "5.6.0")
-else()
-    set(KF5_MIN_VERSION "5.101.0")
-    set(QT_MIN_VERSION "5.15.2")
-    set(KDE_COMPILERSETTINGS_LEVEL "5.84.0")
-endif()
-set(KDE_COMPILERSETTINGS_LEVEL "5.82")
+set(KF5_MIN_VERSION "5.101.0")
+set(QT_MIN_VERSION "5.15.2")
+set(KDE_COMPILERSETTINGS_LEVEL "5.84.0")
 set(QCA_MIN_VERSION "2.1.0")
 
 find_package(ECM ${KF5_MIN_VERSION} REQUIRED NO_MODULE)
@@ -39,9 +33,7 @@ include(ECMGenerateQmlTypes)
 include(KDEClangFormat)
 include(KDEGitCommitHooks)
 include(ECMQmlModule)
-if (NOT SAILFISHOS)
-    include(ECMQMLModules)
-endif()
+include(ECMQMLModules)
 
 include(KDEConnectMacros.cmake)
 
@@ -54,54 +46,44 @@ ecm_setup_version(${RELEASE_SERVICE_VERSION}
 add_library(kdeconnectversion INTERFACE)
 target_include_directories(kdeconnectversion INTERFACE ${CMAKE_CURRENT_BINARY_DIR})
 
-if (SAILFISHOS)
-    set(KF5_REQUIRED_COMPONENTS I18n CoreAddons Config)
-    set(KF5_OPTIONAL_COMPONENTS)
+find_package(Qca-qt${QT_MAJOR_VERSION} ${QCA_MIN_VERSION} REQUIRED)
+set(Qca_LIBRARY qca-qt${QT_MAJOR_VERSION})
 
-    set(Qca_LIBRARY CONAN_PKG::Qca-qt5)
+set(KF5_REQUIRED_COMPONENTS I18n ConfigWidgets DBusAddons IconThemes Notifications KIO KCMUtils Service Solid Kirigami2 People WindowSystem GuiAddons)
+set(KF5_OPTIONAL_COMPONENTS DocTools)
 
-    add_definitions(-DSAILFISHOS)
-else()
-    find_package(Qca-qt${QT_MAJOR_VERSION} ${QCA_MIN_VERSION} REQUIRED)
-    set(Qca_LIBRARY qca-qt${QT_MAJOR_VERSION})
+set_package_properties(KF5Kirigami2 PROPERTIES
+    DESCRIPTION "QtQuick plugins to build user interfaces based on KDE UX guidelines"
+    PURPOSE "Required for KDE Connect's QML-based GUI applications"
+    URL "https://www.kde.org/products/kirigami/"
+    TYPE RUNTIME
+)
 
-    set(KF5_REQUIRED_COMPONENTS I18n ConfigWidgets DBusAddons IconThemes Notifications KIO KCMUtils Service Solid Kirigami2 People WindowSystem GuiAddons)
-    set(KF5_OPTIONAL_COMPONENTS DocTools)
-
-    set_package_properties(KF5Kirigami2 PROPERTIES
-        DESCRIPTION "QtQuick plugins to build user interfaces based on KDE UX guidelines"
-        PURPOSE "Required for KDE Connect's QML-based GUI applications"
-        URL "https://www.kde.org/products/kirigami/"
-        TYPE RUNTIME
-    )
-
-    if(UNIX AND NOT APPLE)
-        find_package(KF5Package REQUIRED)
-        find_package(KF5PulseAudioQt)
-        if (QT_MAJOR_VERSION EQUAL "5")
-            find_package(QtWaylandScanner REQUIRED)
-        endif()
-        find_package(Wayland 1.9 REQUIRED Client)
-        find_package(Qt${QT_MAJOR_VERSION} REQUIRED COMPONENTS WaylandClient)
-        find_package(WaylandProtocols REQUIRED)
-        pkg_check_modules(XkbCommon IMPORTED_TARGET xkbcommon)
-        pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
+if(UNIX AND NOT APPLE)
+    find_package(KF5Package REQUIRED)
+    find_package(KF5PulseAudioQt)
+    if (QT_MAJOR_VERSION EQUAL "5")
+        find_package(QtWaylandScanner REQUIRED)
     endif()
-
-    find_package(KF5PeopleVCard)
-    set_package_properties(KF5PeopleVCard PROPERTIES
-        PURPOSE "Read vcards from the file system"
-        URL "https://invent.kde.org/pim/kpeoplevcard"
-        TYPE RUNTIME
-    )
-
-    add_definitions(-DHAVE_KIO)
-
-    #ecm_find_qmlmodule(org.kde.people 1.0) FIXME This results in KPeople code being called which triggers DBus calls which breaks the Windows CI
-    ecm_find_qmlmodule(QtQuick.Particles 2.0)
-
+    find_package(Wayland 1.9 REQUIRED Client)
+    find_package(Qt${QT_MAJOR_VERSION} REQUIRED COMPONENTS WaylandClient)
+    find_package(WaylandProtocols REQUIRED)
+    pkg_check_modules(XkbCommon IMPORTED_TARGET xkbcommon)
+    pkg_check_modules(GIO REQUIRED IMPORTED_TARGET gio-2.0)
 endif()
 
+find_package(KF5PeopleVCard)
+set_package_properties(KF5PeopleVCard PROPERTIES
+    PURPOSE "Read vcards from the file system"
+    URL "https://invent.kde.org/pim/kpeoplevcard"
+    TYPE RUNTIME
+)
+
+add_definitions(-DHAVE_KIO)
+
+#ecm_find_qmlmodule(org.kde.people 1.0) FIXME This results in KPeople code being called which triggers DBus calls which breaks the Windows CI
+ecm_find_qmlmodule(QtQuick.Particles 2.0)
+
 add_definitions(-DQT_NO_URL_CAST_FROM_STRING -DQT_NO_KEYWORDS -DQT_NO_CAST_FROM_ASCII)
 
 find_package(Qt${QT_MAJOR_VERSION} ${QT_MIN_VERSION} REQUIRED COMPONENTS DBus Quick QuickControls2 Network Multimedia)
@@ -126,31 +108,28 @@ add_subdirectory(core)
 add_subdirectory(plugins)
 add_subdirectory(interfaces)
 
-if (NOT SAILFISHOS)
+find_package(KF5QQC2DesktopStyle ${KF5_MIN_VERSION} REQUIRED)
+set_package_properties(KF5QQC2DesktopStyle PROPERTIES TYPE RUNTIME)
 
-    find_package(KF5QQC2DesktopStyle ${KF5_MIN_VERSION} REQUIRED)
-    set_package_properties(KF5QQC2DesktopStyle PROPERTIES TYPE RUNTIME)
+add_subdirectory(icons)
+add_subdirectory(data)
+add_subdirectory(cli)
+add_subdirectory(declarativeplugin)
 
-    add_subdirectory(icons)
-    add_subdirectory(data)
-    add_subdirectory(cli)
-    add_subdirectory(declarativeplugin)
+add_subdirectory(kcm)
+add_subdirectory(kcmplugin)
+add_subdirectory(daemon)
+add_subdirectory(app)
+add_subdirectory(indicator)
+add_subdirectory(urlhandler)
+add_subdirectory(nautilus-extension)
+add_subdirectory(fileitemactionplugin)
+add_subdirectory(smsapp)
+add_subdirectory(settings)
 
-    add_subdirectory(kcm)
-    add_subdirectory(kcmplugin)
-    add_subdirectory(daemon)
-    add_subdirectory(app)
-    add_subdirectory(indicator)
-    add_subdirectory(urlhandler)
-    add_subdirectory(nautilus-extension)
-    add_subdirectory(fileitemactionplugin)
-    add_subdirectory(smsapp)
-    add_subdirectory(settings)
-
-    if(NOT WIN32 AND NOT APPLE)
-        add_subdirectory(kio)
-        add_subdirectory(plasmoid)
-    endif()
+if(NOT WIN32 AND NOT APPLE)
+    add_subdirectory(kio)
+    add_subdirectory(plasmoid)
 endif()
 
 if(KF5DocTools_FOUND)
diff --git a/KDEConnectMacros.cmake b/KDEConnectMacros.cmake
index b4e2ef558..b4fdddd6a 100644
--- a/KDEConnectMacros.cmake
+++ b/KDEConnectMacros.cmake
@@ -2,27 +2,9 @@
 # Redistribution and use is allowed according to the terms of the BSD license.
 
 
-if (SAILFISHOS)
-    function(kdeconnect_add_plugin plugin)
-        set(options)
-        set(oneValueArgs JSON)
-        set(multiValueArgs SOURCES)
-        cmake_parse_arguments(KC_ADD_PLUGIN "${options}" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
-
-        if(NOT KC_ADD_PLUGIN_SOURCES)
-            message(FATAL_ERROR "kdeconnect_add_plugin called without SOURCES parameter")
-        endif()
-        get_filename_component(json "${KC_ADD_PLUGIN_JSON}" REALPATH)
-
-        add_library(${plugin} STATIC ${KC_ADD_PLUGIN_SOURCES})
-        set_property(TARGET ${plugin} APPEND PROPERTY AUTOGEN_TARGET_DEPENDS ${json})
-        set_property(TARGET ${plugin} APPEND PROPERTY COMPILE_DEFINITIONS QT_STATICPLUGIN)
-    endfunction()
-else()
-    function(kdeconnect_add_plugin)
-        kcoreaddons_add_plugin(${ARGN} INSTALL_NAMESPACE kdeconnect)
-        if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${ARGV0}_config.qml")
-            install(FILES "${ARGV0}_config.qml" DESTINATION ${DATA_INSTALL_DIR}/kdeconnect)
-        endif()
-    endfunction()
-endif()
+function(kdeconnect_add_plugin)
+    kcoreaddons_add_plugin(${ARGN} INSTALL_NAMESPACE kdeconnect)
+    if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${ARGV0}_config.qml")
+        install(FILES "${ARGV0}_config.qml" DESTINATION ${DATA_INSTALL_DIR}/kdeconnect)
+    endif()
+endfunction()
diff --git a/cli/CMakeLists.txt b/cli/CMakeLists.txt
index 22da853a7..817945f81 100644
--- a/cli/CMakeLists.txt
+++ b/cli/CMakeLists.txt
@@ -13,6 +13,4 @@ target_link_libraries(kdeconnect-cli
 
 install(TARGETS kdeconnect-cli ${KDE_INSTALL_TARGETS_DEFAULT_ARGS})
 
-if (NOT SAILFISHOS)
-    install(FILES kdeconnect.zsh RENAME _kdeconnect DESTINATION ${KDE_INSTALL_ZSHAUTOCOMPLETEDIR})
-endif()
+install(FILES kdeconnect.zsh RENAME _kdeconnect DESTINATION ${KDE_INSTALL_ZSHAUTOCOMPLETEDIR})
diff --git a/core/backends/lan/compositeuploadjob.cpp b/core/backends/lan/compositeuploadjob.cpp
index 03d5abbb0..0c8f55a27 100644
--- a/core/backends/lan/compositeuploadjob.cpp
+++ b/core/backends/lan/compositeuploadjob.cpp
@@ -7,7 +7,6 @@
 #include "compositeuploadjob.h"
 #include "lanlinkprovider.h"
 #include "plugins/share/shareplugin.h"
-#include "qtcompat_p.h"
 #include <KJobTrackerInterface>
 #include <KLocalizedString>
 #include <core_debug.h>
@@ -95,21 +94,14 @@ void CompositeUploadJob::startNextSubJob()
     m_currentJobSendPayloadSize = 0;
     emitDescription(m_currentJob->getNetworkPacket().get<QString>(QStringLiteral("filename")));
 
-#ifdef SAILFISHOS
-    connect(m_currentJob, SIGNAL(processedAmount(KJob *, KJob::Unit, qulonglong)), this, SLOT(slotProcessedAmount(KJob *, KJob::Unit, qulonglong)));
-#else
     connect(m_currentJob, QOverload<KJob *, KJob::Unit, qulonglong>::of(&UploadJob::processedAmount), this, &CompositeUploadJob::slotProcessedAmount);
-#endif
+
     // Already done by KCompositeJob
     // connect(m_currentJob, &KJob::result, this, &CompositeUploadJob::slotResult);
 
     // TODO: Create a copy of the networkpacket that can be re-injected if sending via lan fails?
     NetworkPacket np = m_currentJob->getNetworkPacket();
-#if QT_VERSION < QT_VERSION_CHECK(5, 8, 0)
-    np.setPayload({}, np.payloadSize());
-#else
     np.setPayload(nullptr, np.payloadSize());
-#endif
     np.setPayloadTransferInfo({{QStringLiteral("port"), m_port}});
     np.set<int>(QStringLiteral("numberOfFiles"), m_totalJobs);
     np.set<quint64>(QStringLiteral("totalPayloadSize"), m_totalPayloadSize);
@@ -144,11 +136,7 @@ void CompositeUploadJob::newConnection()
     m_currentJob->setSocket(m_socket);
 
     connect(m_socket, &QSslSocket::disconnected, this, &CompositeUploadJob::socketDisconnected);
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
-    connect(m_socket, QOverload<QAbstractSocket::SocketError>::of(&QAbstractSocket::error), this, &CompositeUploadJob::socketError);
-#else
     connect(m_socket, &QAbstractSocket::errorOccurred, this, &CompositeUploadJob::socketError);
-#endif
     connect(m_socket, QOverload<const QList<QSslError> &>::of(&QSslSocket::sslErrors), this, &CompositeUploadJob::sslError);
     connect(m_socket, &QSslSocket::encrypted, this, &CompositeUploadJob::encrypted);
 
diff --git a/core/backends/lan/lanlinkprovider.cpp b/core/backends/lan/lanlinkprovider.cpp
index 3d72c6b49..7104a966f 100644
--- a/core/backends/lan/lanlinkprovider.cpp
+++ b/core/backends/lan/lanlinkprovider.cpp
@@ -33,7 +33,6 @@
 #include "daemon.h"
 #include "kdeconnectconfig.h"
 #include "landevicelink.h"
-#include "qtcompat_p.h"
 
 static const int MAX_UNPAIRED_CONNECTIONS = 42;
 static const int MAX_REMEMBERED_IDENTITY_PACKETS = 42;
@@ -294,11 +293,7 @@ void LanLinkProvider::udpBroadcastReceived()
         m_receivedIdentityPackets[socket].np = receivedPacket;
         m_receivedIdentityPackets[socket].sender = sender;
         connect(socket, &QAbstractSocket::connected, this, &LanLinkProvider::tcpSocketConnected);
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
-        connect(socket, QOverload<QAbstractSocket::SocketError>::of(&QAbstractSocket::error), this, &LanLinkProvider::connectError);
-#else
         connect(socket, &QAbstractSocket::errorOccurred, this, &LanLinkProvider::connectError);
-#endif
         socket->connectToHost(sender, tcpPort);
     }
 }
@@ -330,11 +325,7 @@ void LanLinkProvider::tcpSocketConnected()
         return;
     }
 
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
-    disconnect(socket, QOverload<QAbstractSocket::SocketError>::of(&QAbstractSocket::error), this, &LanLinkProvider::connectError);
-#else
     disconnect(socket, &QAbstractSocket::errorOccurred, this, &LanLinkProvider::connectError);
-#endif
 
     configureSocket(socket);
 
diff --git a/core/compositefiletransferjob.cpp b/core/compositefiletransferjob.cpp
index 9c0208623..22fa9ab79 100644
--- a/core/compositefiletransferjob.cpp
+++ b/core/compositefiletransferjob.cpp
@@ -47,14 +47,10 @@ void CompositeFileTransferJob::startNextSubJob()
                        {i18nc("The destination of a file operation", "Destination"), m_currentJob->destination().toDisplayString(QUrl::PreferLocalFile)});
 
     m_currentJob->start();
-#ifdef SAILFISHOS
-    connect(m_currentJob, SIGNAL(processedAmount(KJob *, KJob::Unit, qulonglong)), this, SLOT(slotProcessedAmount(KJob *, KJob::Unit, qulonglong)));
-#else
     connect(m_currentJob,
             QOverload<KJob *, KJob::Unit, qulonglong>::of(&FileTransferJob::processedAmount),
             this,
             &CompositeFileTransferJob::slotProcessedAmount);
-#endif
 }
 
 bool CompositeFileTransferJob::addSubjob(KJob *job)
diff --git a/core/daemon.cpp b/core/daemon.cpp
index 6bd49e75d..ed73f06fd 100644
--- a/core/daemon.cpp
+++ b/core/daemon.cpp
@@ -28,9 +28,6 @@
 #include "backends/loopback/loopbacklinkprovider.h"
 #include "device.h"
 
-// In older Qt released, qAsConst isnt available
-#include "qtcompat_p.h"
-
 static Daemon *s_instance = nullptr;
 
 struct DaemonPrivate {
diff --git a/core/device.cpp b/core/device.cpp
index b6fba83a1..31426ac29 100644
--- a/core/device.cpp
+++ b/core/device.cpp
@@ -26,9 +26,6 @@
 #include "networkpacket.h"
 #include "pluginloader.h"
 
-// In older Qt released, qAsConst isnt available
-#include "qtcompat_p.h"
-
 class Device::DevicePrivate
 {
 public:
diff --git a/core/filetransferjob.cpp b/core/filetransferjob.cpp
index 85d047b00..9c00a9354 100644
--- a/core/filetransferjob.cpp
+++ b/core/filetransferjob.cpp
@@ -95,11 +95,7 @@ void FileTransferJob::startTransfer()
 
         m_written = bytesSent;
     });
-#if QT_VERSION < QT_VERSION_CHECK(5, 15, 0)
-    connect(m_reply, static_cast<void (QNetworkReply::*)(QNetworkReply::NetworkError)>(&QNetworkReply::error), this, &FileTransferJob::transferFailed);
-#else
     connect(m_reply, &QNetworkReply::errorOccurred, this, &FileTransferJob::transferFailed);
-#endif
     connect(m_reply, &QNetworkReply::finished, this, &FileTransferJob::transferFinished);
 }
 
diff --git a/core/kdeconnectconfig.cpp b/core/kdeconnectconfig.cpp
index 96c993aa8..bd5146b8b 100644
--- a/core/kdeconnectconfig.cpp
+++ b/core/kdeconnectconfig.cpp
@@ -47,19 +47,6 @@ struct KdeConnectConfigPrivate {
 
 static QString getDefaultDeviceName()
 {
-#ifdef SAILFISHOS
-    const QString hwReleaseFile = QStringLiteral("/etc/hw-release");
-    // QSettings will crash if the file does not exist or can be created, like in this case by us in /etc.
-    // E.g. in the SFOS SDK Emulator there is no such file, so check before to protect against the crash.
-    if (QFile::exists(hwReleaseFile)) {
-        QSettings hwRelease(hwReleaseFile, QSettings::IniFormat);
-        auto hwName = hwRelease.value(QStringLiteral("NAME")).toString();
-        if (!hwName.isEmpty()) {
-            return hwName;
-        }
-    }
-#endif
-
     return QHostInfo::localHostName();
 }
 
@@ -109,9 +96,6 @@ void KdeConnectConfig::setName(const QString &name)
 
 DeviceType KdeConnectConfig::deviceType()
 {
-#ifdef SAILFISHOS
-    return DeviceType::Phone;
-#else
     const QByteArrayList platforms = qgetenv("PLASMA_PLATFORM").split(':');
 
     if (platforms.contains("phone")) {
@@ -125,7 +109,6 @@ DeviceType KdeConnectConfig::deviceType()
     // TODO non-Plasma mobile platforms
 
     return DeviceType::Desktop;
-#endif
 }
 
 QString KdeConnectConfig::deviceId()
diff --git a/core/pluginloader.cpp b/core/pluginloader.cpp
index c9087834d..037807067 100644
--- a/core/pluginloader.cpp
+++ b/core/pluginloader.cpp
@@ -18,9 +18,6 @@
 #include "kdeconnectconfig.h"
 #include "kdeconnectplugin.h"
 
-// In older Qt released, qAsConst isnt available
-#include "qtcompat_p.h"
-
 PluginLoader *PluginLoader::instance()
 {
     static PluginLoader *instance = new PluginLoader();
@@ -29,22 +26,10 @@ PluginLoader *PluginLoader::instance()
 
 PluginLoader::PluginLoader()
 {
-#ifdef SAILFISHOS
-    const QVector<QStaticPlugin> staticPlugins = QPluginLoader::staticPlugins();
-    for (auto &staticPlugin : staticPlugins) {
-        QJsonObject jsonMetadata = staticPlugin.metaData().value(QStringLiteral("MetaData")).toObject();
-        KPluginMetaData metadata(jsonMetadata, QString());
-        if (metadata.serviceTypes().contains(QStringLiteral("KdeConnect/Plugin"))) {
-            plugins.insert(metadata.pluginId(), metadata);
-            pluginsFactories.insert(metadata.pluginId(), qobject_cast<KPluginFactory *>(staticPlugin.instance()));
-        }
-    }
-#else
     const QVector<KPluginMetaData> data = KPluginLoader::findPlugins(QStringLiteral("kdeconnect/"));
     for (const KPluginMetaData &metadata : data) {
         plugins[metadata.pluginId()] = metadata;
     }
-#endif
 }
 
 QStringList PluginLoader::getPluginList() const
@@ -72,16 +57,12 @@ KdeConnectPlugin *PluginLoader::instantiatePluginForDevice(const QString &plugin
         return ret;
     }
 
-#ifdef SAILFISHOS
-    KPluginFactory *factory = pluginsFactories.value(pluginName);
-#else
     KPluginLoader loader(service.fileName());
     KPluginFactory *factory = loader.factory();
     if (!factory) {
         qCDebug(KDECONNECT_CORE) << "KPluginFactory could not load the plugin:" << service.pluginId() << loader.errorString();
         return ret;
     }
-#endif
 
     const QStringList outgoingInterfaces = KPluginMetaData::readStringList(service.rawData(), QStringLiteral("X-KdeConnect-OutgoingPacketType"));
 
diff --git a/core/pluginloader.h b/core/pluginloader.h
index d6017f08f..b49c79a89 100644
--- a/core/pluginloader.h
+++ b/core/pluginloader.h
@@ -37,9 +37,6 @@ private:
     PluginLoader();
 
     QHash<QString, KPluginMetaData> plugins;
-#ifdef SAILFISHOS
-    QHash<QString, KPluginFactory *> pluginsFactories;
-#endif
 };
 
 #endif
diff --git a/core/qtcompat_p.h b/core/qtcompat_p.h
deleted file mode 100644
index 534a6fbf5..000000000
--- a/core/qtcompat_p.h
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
-    SPDX-FileCopyrightText: 2017 Kevin Funk <kfunk@.kde.org>
-
-    SPDX-License-Identifier: LGPL-2.0-or-later
-*/
-
-#ifndef KDEVELOP_QTCOMPAT_P_H
-#define KDEVELOP_QTCOMPAT_P_H
-
-#include <qglobal.h>
-
-#include <QDir>
-
-#if QT_VERSION < QT_VERSION_CHECK(5, 7, 0)
-namespace QtPrivate
-{
-template<typename T>
-struct QAddConst {
-    typedef const T Type;
-};
-}
-
-// this adds const to non-const objects (like std::as_const)
-template<typename T>
-Q_DECL_CONSTEXPR typename QtPrivate::QAddConst<T>::Type &qAsConst(T &t) Q_DECL_NOTHROW
-{
-    return t;
-}
-// prevent rvalue arguments:
-template<typename T>
-void qAsConst(const T &&) Q_DECL_EQ_DELETE;
-#endif
-
-#if QT_VERSION < QT_VERSION_CHECK(5, 7, 0)
-template<typename... Args>
-struct QNonConstOverload {
-    template<typename R, typename T>
-    static constexpr auto of(R (T::*func)(Args...)) noexcept -> decltype(func)
-    {
-        return func;
-    }
-};
-
-template<typename... Args>
-struct QConstOverload {
-    template<typename R, typename T>
-    static constexpr auto of(R (T::*func)(Args...) const) noexcept -> decltype(func)
-    {
-        return func;
-    }
-};
-
-template<typename... Args>
-struct QOverload : QConstOverload<Args...>, QNonConstOverload<Args...> {
-    using QConstOverload<Args...>::of;
-    using QNonConstOverload<Args...>::of;
-
-    template<typename R>
-    static constexpr auto of(R (*func)(Args...)) noexcept -> decltype(func)
-    {
-        return func;
-    }
-};
-#endif
-
-// compat for Q_FALLTHROUGH
-#if QT_VERSION < QT_VERSION_CHECK(5, 8, 0)
-
-#if defined(__has_cpp_attribute)
-#if __has_cpp_attribute(fallthrough)
-#define Q_FALLTHROUGH() [[fallthrough]]
-#elif __has_cpp_attribute(clang::fallthrough)
-#define Q_FALLTHROUGH() [[clang::fallthrough]]
-#elif __has_cpp_attribute(gnu::fallthrough)
-#define Q_FALLTHROUGH() [[gnu::fallthrough]]
-#endif
-#endif
-
-#ifndef Q_FALLTHROUGH
-#if defined(__GNUC__) && !defined(__INTEL_COMPILER) && (((__GNUC__ * 100) + __GNUC_MINOR__) >= 700)
-#define Q_FALLTHROUGH() __attribute__((fallthrough))
-#else
-#define Q_FALLTHROUGH() (void)0
-#endif
-#endif
-
-#endif
-
-namespace QtCompat
-{
-// TODO: Just use QDir::listSeparator once we depend on Qt 5.6
-Q_DECL_CONSTEXPR inline QChar listSeparator() Q_DECL_NOTHROW
-{
-#if QT_VERSION < QT_VERSION_CHECK(5, 6, 0)
-#ifdef Q_OS_WIN
-    return QLatin1Char(';');
-#else
-    return QLatin1Char(':');
-#endif
-#else
-    return QDir::listSeparator();
-#endif
-}
-}
-
-#endif
diff --git a/data/CMakeLists.txt b/data/CMakeLists.txt
index 6d3621f29..402313130 100644
--- a/data/CMakeLists.txt
+++ b/data/CMakeLists.txt
@@ -3,6 +3,4 @@ install (FILES "kdeconnect-thunar.desktop" DESTINATION ${KDE_INSTALL_DATADIR}/Th
 install(FILES org.kde.kdeconnect_open.desktop DESTINATION ${KDE_INSTALL_APPDIR})
 install (FILES "kdeconnect-dde.desktop" DESTINATION ${KDE_INSTALL_DATADIR}/deepin/dde-file-manager/oem-menuextensions/)
 
-if(NOT SAILFISHOS)
-    install(FILES org.kde.kdeconnect.metainfo.xml DESTINATION ${KDE_INSTALL_METAINFODIR})
-endif()
+install(FILES org.kde.kdeconnect.metainfo.xml DESTINATION ${KDE_INSTALL_METAINFODIR})
diff --git a/declarativeplugin/kdeconnectdeclarativeplugin.cpp b/declarativeplugin/kdeconnectdeclarativeplugin.cpp
index 60fa1e7c1..4b695bbf2 100644
--- a/declarativeplugin/kdeconnectdeclarativeplugin.cpp
+++ b/declarativeplugin/kdeconnectdeclarativeplugin.cpp
@@ -102,11 +102,7 @@ void KdeConnectDeclarativePlugin::registerTypes(const char *uri)
         return new OpenConfig;
     });
 
-#if (QT_VERSION >= QT_VERSION_CHECK(5, 14, 0))
     qmlRegisterAnonymousType<QAbstractItemModel>(uri, 1);
-#else
-    qmlRegisterType<QAbstractItemModel>();
-#endif
 
     registerFactory<DeviceDbusInterface>(uri, "DeviceDbusInterfaceFactory");
     registerFactory<BatteryDbusInterface>(uri, "DeviceBatteryDbusInterfaceFactory");
diff --git a/declarativeplugin/responsewaiter.cpp b/declarativeplugin/responsewaiter.cpp
index ae59ba67d..d8a223d73 100644
--- a/declarativeplugin/responsewaiter.cpp
+++ b/declarativeplugin/responsewaiter.cpp
@@ -11,9 +11,6 @@
 #include <QDBusPendingReply>
 #include <QDebug>
 
-// In older Qt released, qAsConst isnt available
-#include "core/qtcompat_p.h"
-
 Q_DECLARE_METATYPE(QDBusPendingReply<>)
 Q_DECLARE_METATYPE(QDBusPendingReply<QVariant>)
 Q_DECLARE_METATYPE(QDBusPendingReply<bool>)
diff --git a/interfaces/dbusinterfaces.cpp b/interfaces/dbusinterfaces.cpp
index a25ecf409..3ca0f54b5 100644
--- a/interfaces/dbusinterfaces.cpp
+++ b/interfaces/dbusinterfaces.cpp
@@ -11,12 +11,10 @@ QString DaemonDbusInterface::activatedService()
 {
     static const QString service = QStringLiteral("org.kde.kdeconnect");
 
-#ifndef SAILFISHOS
     auto reply = QDBusConnection::sessionBus().interface()->startService(service);
     if (!reply.isValid()) {
         qWarning() << "error activating kdeconnectd:" << reply.error();
     }
-#endif
 
     return service;
 }
diff --git a/interfaces/notificationsmodel.cpp b/interfaces/notificationsmodel.cpp
index b57bf973a..6b9312dad 100644
--- a/interfaces/notificationsmodel.cpp
+++ b/interfaces/notificationsmodel.cpp
@@ -11,8 +11,6 @@
 
 #include <dbushelper.h>
 
-// In older Qt released, qAsConst isnt available
-#include "core/qtcompat_p.h"
 #include "interfaces_debug.h"
 
 NotificationsModel::NotificationsModel(QObject *parent)
diff --git a/interfaces/remotesinksmodel.cpp b/interfaces/remotesinksmodel.cpp
index c0752df00..f0114ccdd 100644
--- a/interfaces/remotesinksmodel.cpp
+++ b/interfaces/remotesinksmodel.cpp
@@ -9,7 +9,6 @@
 
 #include <QDebug>
 
-#include <core/qtcompat_p.h>
 #include <dbushelper.h>
 
 RemoteSinksModel::RemoteSinksModel(QObject *parent)
diff --git a/plugins/CMakeLists.txt b/plugins/CMakeLists.txt
index de05e9c12..ec4b809ba 100644
--- a/plugins/CMakeLists.txt
+++ b/plugins/CMakeLists.txt
@@ -20,50 +20,48 @@ endif()
 
 add_subdirectory(presenter)
 
-if(NOT SAILFISHOS)
-    if((WIN32 AND MSVC AND (${CMAKE_SYSTEM_VERSION} VERSION_GREATER_EQUAL 10.0.17763.0)) OR NOT WIN32)
-        add_subdirectory(mpriscontrol)
-    endif()
-    add_subdirectory(photo)
-    add_subdirectory(mprisremote)
-    add_subdirectory(lockdevice)
-    add_subdirectory(contacts)
-    add_subdirectory(share)
-    add_subdirectory(remotekeyboard)
-    add_subdirectory(notifications)
-    add_subdirectory(findmyphone)
-    add_subdirectory(telephony)
-    add_subdirectory(mousepad)
-    add_subdirectory(sms)
-    add_subdirectory(screensaver-inhibit)
-    add_subdirectory(virtualmonitor)
+if((WIN32 AND MSVC AND (${CMAKE_SYSTEM_VERSION} VERSION_GREATER_EQUAL 10.0.17763.0)) OR NOT WIN32)
+    add_subdirectory(mpriscontrol)
+endif()
+add_subdirectory(photo)
+add_subdirectory(mprisremote)
+add_subdirectory(lockdevice)
+add_subdirectory(contacts)
+add_subdirectory(share)
+add_subdirectory(remotekeyboard)
+add_subdirectory(notifications)
+add_subdirectory(findmyphone)
+add_subdirectory(telephony)
+add_subdirectory(mousepad)
+add_subdirectory(sms)
+add_subdirectory(screensaver-inhibit)
+add_subdirectory(virtualmonitor)
 
-    if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
-        find_package(KF5ModemManagerQt ${KF5_MIN_VERSION})
-        if (TARGET KF5::ModemManagerQt)
-            add_subdirectory(mmtelephony)
-        endif()
+if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+    find_package(KF5ModemManagerQt ${KF5_MIN_VERSION})
+    if (TARGET KF5::ModemManagerQt)
+        add_subdirectory(mmtelephony)
     endif()
+endif()
 
-    if(NOT WIN32 AND NOT APPLE)
-        add_subdirectory(sendnotifications)
-    endif()
+if(NOT WIN32 AND NOT APPLE)
+    add_subdirectory(sendnotifications)
+endif()
 
-    if(NOT APPLE)
-        add_subdirectory(sftp)
-    endif()
+if(NOT APPLE)
+    add_subdirectory(sftp)
+endif()
 
-    if(KF5PulseAudioQt_FOUND OR WIN32)
-        add_subdirectory(pausemusic)
-    endif()
+if(KF5PulseAudioQt_FOUND OR WIN32)
+    add_subdirectory(pausemusic)
+endif()
 
-    if(Qt5Multimedia_FOUND AND (KF5PulseAudioQt_FOUND OR WIN32))
-        add_subdirectory(findthisdevice)
-    endif()
+if(Qt5Multimedia_FOUND AND (KF5PulseAudioQt_FOUND OR WIN32))
+    add_subdirectory(findthisdevice)
+endif()
 
-    if (WIN32 OR APPLE OR KF5PulseAudioQt_FOUND)
-        add_subdirectory(systemvolume)
-    endif()
+if (WIN32 OR APPLE OR KF5PulseAudioQt_FOUND)
+    add_subdirectory(systemvolume)
 endif()
 
 
diff --git a/plugins/pausemusic/pausemusicplugin.cpp b/plugins/pausemusic/pausemusicplugin.cpp
index 41d80fb2d..7ddae5a70 100644
--- a/plugins/pausemusic/pausemusicplugin.cpp
+++ b/plugins/pausemusic/pausemusicplugin.cpp
@@ -13,9 +13,7 @@
 #include "mprisplayer.h"
 #include <dbushelper.h>
 
-// In older Qt released, qAsConst isnt available
 #include "plugin_pausemusic_debug.h"
-#include "qtcompat_p.h"
 
 K_PLUGIN_CLASS_WITH_JSON(PauseMusicPlugin, "kdeconnect_pausemusic.json")
 
diff --git a/plugins/runcommand/CMakeLists.txt b/plugins/runcommand/CMakeLists.txt
index 9a4a84662..b43cae2b5 100644
--- a/plugins/runcommand/CMakeLists.txt
+++ b/plugins/runcommand/CMakeLists.txt
@@ -19,14 +19,11 @@ target_link_libraries(kdeconnect_runcommand
     KF5::I18n)
 
 #----------------------
-if(NOT SAILFISHOS)
-    kcoreaddons_add_plugin(kdeconnect_runcommand_config SOURCES runcommand_config.cpp INSTALL_NAMESPACE "kdeconnect/kcms")
-    target_link_libraries( kdeconnect_runcommand_config
-        kdeconnectcore
-        kdeconnectpluginkcm
-        KF5::I18n
-        KF5::CoreAddons
-        KF5::ConfigWidgets
-
-    )
-endif()
+kcoreaddons_add_plugin(kdeconnect_runcommand_config SOURCES runcommand_config.cpp INSTALL_NAMESPACE "kdeconnect/kcms")
+target_link_libraries( kdeconnect_runcommand_config
+    kdeconnectcore
+    kdeconnectpluginkcm
+    KF5::I18n
+    KF5::CoreAddons
+    KF5::ConfigWidgets
+)
diff --git a/plugins/runcommand/runcommandplugin.cpp b/plugins/runcommand/runcommandplugin.cpp
index 27a1edf1d..b2a00abf5 100644
--- a/plugins/runcommand/runcommandplugin.cpp
+++ b/plugins/runcommand/runcommandplugin.cpp
@@ -14,12 +14,8 @@
 #include <QProcess>
 #include <QSettings>
 
-#ifdef SAILFISHOS
-#define KCMUTILS_VERSION 0
-#else
 #include <KShell>
 #include <kcmutils_version.h>
-#endif
 
 #include <core/daemon.h>
 #include <core/device.h>
diff --git a/plugins/sendnotifications/CMakeLists.txt b/plugins/sendnotifications/CMakeLists.txt
index f994f7f2e..b5fad9ec2 100644
--- a/plugins/sendnotifications/CMakeLists.txt
+++ b/plugins/sendnotifications/CMakeLists.txt
@@ -1,10 +1,3 @@
-if (SAILFISHOS)
-	set(SN_PLUGIN_ENABLED_BY_DEFAULT "true")
-else()
-	set(SN_PLUGIN_ENABLED_BY_DEFAULT "false")
-endif()
-
-configure_file(kdeconnect_sendnotifications.json.in kdeconnect_sendnotifications.json)
 
 set(debug_file_SRCS)
 ecm_qt_declare_logging_category(
@@ -17,7 +10,6 @@ set(kdeconnect_sendnotifications_SRCS
     sendnotificationsplugin.cpp
     notificationslistener.cpp
     notifyingapplication.cpp
-    kdeconnect_sendnotifications.json
     ${debug_file_SRCS}
 )
 
@@ -35,7 +27,6 @@ target_link_libraries(kdeconnect_sendnotifications
 
 #######################################
 # Config
-if (NOT SAILFISHOS)
 
 kcoreaddons_add_plugin(kdeconnect_sendnotifications_config INSTALL_NAMESPACE "kdeconnect/kcms")
 
@@ -52,4 +43,3 @@ target_link_libraries( kdeconnect_sendnotifications_config
     KF5::I18n
     KF5::KCMUtils
 )
-endif()
diff --git a/plugins/sendnotifications/kdeconnect_sendnotifications.json.in b/plugins/sendnotifications/kdeconnect_sendnotifications.json
similarity index 99%
rename from plugins/sendnotifications/kdeconnect_sendnotifications.json.in
rename to plugins/sendnotifications/kdeconnect_sendnotifications.json
index 9859b05ac..9b5f69324 100644
--- a/plugins/sendnotifications/kdeconnect_sendnotifications.json.in
+++ b/plugins/sendnotifications/kdeconnect_sendnotifications.json
@@ -45,7 +45,7 @@
         "Description[x-test]": "xxBroadcast this computer's notifications, so they can be shown on other devices.xx",
         "Description[zh_CN]": "广播此计算机的通知，以被其他设备显示。",
         "Description[zh_TW]": "廣播此電腦的通知，這樣可以顯示在其他裝置上。",
-        "EnabledByDefault": ${SN_PLUGIN_ENABLED_BY_DEFAULT},
+        "EnabledByDefault": false,
         "Icon": "preferences-desktop-notification",
         "Id": "kdeconnect_sendnotifications",
         "License": "GPL",
diff --git a/plugins/sendnotifications/notificationslistener.cpp b/plugins/sendnotifications/notificationslistener.cpp
index 8b5894d3d..2e005fdf1 100644
--- a/plugins/sendnotifications/notificationslistener.cpp
+++ b/plugins/sendnotifications/notificationslistener.cpp
@@ -28,9 +28,6 @@
 #include "plugin_sendnotification_debug.h"
 #include "sendnotificationsplugin.h"
 
-// In older Qt released, qAsConst isnt available
-#include "qtcompat_p.h"
-
 NotificationsListener::NotificationsListener(KdeConnectPlugin *aPlugin)
     : QObject(aPlugin)
     , m_plugin(aPlugin)