Android troubleshooting: issues with manufacturer variation called out.

An Android app keeps crashing or will not open

Force stop the app, restart the device, update the app and Android, then clear the app cache. Clear storage or uninstall only with credentials and synced data available because either can remove local app state. Note the app version before and after updating, since a crash that began after an update points to that version.

Android is connected to Wi-Fi but has no internet

Compare Wi-Fi with mobile data, test another device on the same network, restart the phone and router, then forget and reconnect to the network. Reset Wi-Fi, mobile and Bluetooth settings only after noting that it removes saved connections.

Android keyboard disappeared or will not open

If no keyboard appears in any app, the input method may be disabled, crashed or not selected. If one app is affected, treat it as that app’s layout problem.

Android notifications arrive late or only after unlocking

Delayed alerts usually come from per-app notification settings, battery optimization, restricted background data, Focus/Do Not Disturb or a vendor sleep list.

Android phone rings but the incoming-call screen does not appear

A missing call screen can result from Phone app notifications, display-over-app permission, default-phone selection or a stuck call app—not the cellular connection itself.

Android storage is full even with few photos

Hidden storage is often app caches/downloads, offline media, messaging attachments, trash or system update files. Use the storage breakdown before deleting app data.

Android will not pair with a Bluetooth device

Turn Bluetooth off and on, restart both devices, make the accessory discoverable and keep it nearby, then forget and re-pair it. Check whether the accessory is still connected to a different phone before resetting network settings. Android keeps a list of paired devices on each phone, so remove old pairings if the list is long.

Android default-app routing behaves incorrectly or produces the wrong result

Android default-app routing is not working

Android default-app routing is unusually slow or delayed

Android default-app routing keeps disconnecting or working intermittently

Android default-app routing stopped working after an update, outage or hardware change

Android default-app routing works only on one app, network, account or location

Android mobile hotspot behaves incorrectly or produces the wrong result

Android mobile hotspot is not working

Android mobile hotspot is unusually slow or delayed

Android mobile hotspot keeps disconnecting or working intermittently

Android mobile hotspot stopped working after an update, outage or hardware change

Android mobile hotspot works only on one app, network, account or location

Android notification channels behaves incorrectly or produces the wrong result

Android notification channels is not working

Android notification channels is unusually slow or delayed

Android notification channels keeps disconnecting or working intermittently

Android notification channels stopped working after an update, outage or hardware change

Android notification channels works only on one app, network, account or location

Android USB file transfer behaves incorrectly or produces the wrong result

Android USB file transfer is not working

Android USB file transfer is unusually slow or delayed

Android USB file transfer keeps disconnecting or working intermittently

Android USB file transfer stopped working after an update, outage or hardware change

Android USB file transfer works only on one app, network, account or location

Google Play services behaves incorrectly or produces the wrong result

Google Play services is not working

Google Play services is unusually slow or delayed

Google Play services keeps disconnecting or working intermittently

Google Play services stopped working after an update, outage or hardware change

Google Play services works only on one app, network, account or location