I bought it about 5 months ago and it was working fine a few days back but suddenly it won't read my memory card. I thought my memory card was damaged so I inserted my friend's memory card but it didn't read it either. So what could be its problem. If it can be fixed without taking it to warranty then how? Warranty takes 15 - 20 business days and I dont want to be without my cellphone for 15 - 20 days
So the option is, try to find someone or go to some shops that will fix your cellphone right away, but you will pay for them. If you don't want to pay go for its warranty.
It is just a little problem, there are many shops that could fix that in a couple of minutes. But watch out, you warranty might be void if you let someone else open your phone up.