so last night I noticed a black spot in the top rjgjt corner of the phone which appeared to be a large dead pixel spot. I searched for some at home fixes but nothing worked so I ffigured I would just take the phone to sprint in the morning. now I have woken up and the spot is still there but now the entire phone is a shade of pink and purple making the screen hard to use.what is wrong with my phone?? I was already having problems with it resetting reguearly by itself but this is just not ok! what can I do??