I have downloaded 7 apps only to my HTC one. It keeps switching off and it seems one of the apps is incompatible. how can I know which app is causing this problem?
Welcome to Android Central! Uninstall apps one by one until the behavior stops. If it doesn't stay on long enough for you to uninstall an app, then boot into Safe Mode: https://support.t-mobile.com/docs/DOC-10853