Learn how to change the primary or default Google account in your Android mobile phone. Instead you can use another Gmail account or Yahoo!, Hotmail email accounts as your default account.
Learn how to restart Android in safe mode. You may need to reboot your phone in safe mode to troubleshoot various issues. For this you do not require any third party apps or apk files.
Learn how to bypass the "device was reset. Sign in with Google Account that was Previously Synced" FRP lock problem in Android phones manufactured by companies like Samsung, Moto, Lenovo, Sony etc.
If you think sensors in your mobile phone are not working properly, you can easily test sensors on your Android device with these free apps to figure out problem. You can test gyroscope, accelerometer, proximity, light, pressure, magnetic field, temperature and other sensors.
Learn how to fix the "cant install app: insufficient storage available" error message in an Android device. This error message may pop up even if there is plenty of free space in your mobile phone.
You can end a call with power button on Android phones. It is easier to have a physical, hard and tactile button to disconnect call. Some people, especially the ones with shaking hands, find it difficult to get used to with touch screens.
You can use "no I said" command to correct words misinterpreted by Google Android voice recognition module. Voice commands are handy when you cannot type. Try this little pretty trick on your phone / tablet.
People have begun to feel the need to secure their text message (SMS) inbox. Text messages are private in nature but mobile phone may not always be in your hand. Learn how to put a password on any app.