A friend of mine owns a Galaxy S3 and is having the following problem
The phone seems not booting, and a white screen with black lines appear.
We've thought about getting a new screen housing complete, with digitizer, screen, etc. but I'm not sure if this will solve the problem.
How could I do some testing so I can know which is the problem and how could I do a complete wipe to the phone as it is now, if possible?