Hello, I have a serious problem in mobile for some good months ago is that I get the message 'Error network or SIM card' all the time, and not let me make or receive calls, sms, etc. Only 'fix' momentarily turning on and off the airplane mode, but can sometimes last for several days, sometimes only a few hours.
I have the mobile just as I came without rooting. In fact it is not even updated because do not let me through Samsung Kies, and mobile is quite slow, often locks, etc.
I have not encouraged rootearlo for fear of losing the warranty, I do not know if he will flasheándolo problems you have.
Doing a little research online, I have seen that this problem has to do with change IMEI. I have not touched anything, in fact I have no idea of these issues, but actually I checked the IMEI I get typing * # 06 # does not match the one that comes in the box of the terminal, I get one so generic type seen is 0049 ...
Where I could only touch the mobile was on the SAT, when you send several months ago for it to be fixed because only subsided, but can not explain.
I'm desperate friends, because I know how I can fix this, simply rooteandolo not think that is resolved, I've even been reading that IMEI change is illegal, but I have not touched absolutely nothing like I said
Can anyone guide me a little about how I can solve this big problem?
Thanks greetings.