m using a Fizz Sim card but in its info, is still my old number. How to change it?

Raffmei

Just answering the question, yes, I've solved the problem. Resetting the phone is FAR from the answer, since the problem is in the chip. So I've bought another ship and contacted the support for changing my account to this new Chip. The problem was NOT in my phone, as mentioned before. That's all

Yelena

Thanks for the info ;-D