1. Turn on your Android/IOS phone to find the main APP (EZdiag) and software APP ( US&Europe car, Asia1 car , China ), such as picture:
2.For example, you want to remove LAUNCH ICARSCAN US&Euro car,
2.1 Click this icon 
, you will see:
2.2 Click OK , The page will turn to EZdiagAPP
2.3 Turn off EZdiag APP and go to US&Euro car APP
, Click login
2.4 The page will turn as this picture :
2.5 Finger Hold the screen for 3 to 5 seconds, the screen will turn to this page:
2.6 Click OK, in this way, You can delete all the ICARSCAN US&Euro car of diagnostic software.
3.If you want to remove icarscan special features and Asian1 car models diagnostic software,
3.1 Click 
3.2 Click OK , The page will turn to EZdiag APP
3.3 Turn off EZdiag APP and go to Asia1 APP
, Click login
3.4 The page will turn as this picture :
3.5 Finger Hold the screen for 3 to 5 seconds, the screen will turn to this page:
7. Click OK，in this way, You can delete all the Asia1 car of auto repair software.
if you are interesting in buy LAUNCH ICARSCAN , please link to : http://www.obd2tool.com/goods-5052-Launch+X431+iCarScan+Bluetooth+Diagnostic+Scanner+for+Android.html