Samsung Troubleshooting Guides (Android 4.0+)SamsungWhat issue are you experiencing?Getting StartedNo service, Emergency calls onlyMobile data not workingWi-Fi connection issuesCan't receive incoming callsAudio or microphone issues during callsHome screen, Display & NotificationsNot receiving incoming text messagesMessages displaying in the wrong orderCan't send or receive picture messagesReceiving the same message multiple timesNew message notification but no messages in inboxSettings, Maintenance & SecurityBrightness bar missing from notification panelSamsung won't boot past Galaxy screenPower button broken or unresponsiveScreen turning off during callCar mode turning on by itselfKeyboard not functioning properly"New Voicemail" notification won't clearScreen Time & Family SharingHow to configure APN settingsHow to perform a backup & restoreHow to perform a hard resetHow to block incoming callsHow to activate "OK Google"