Is iPhone battery is replaceable
Sir,
I am using iPhone 4 in Mumbai for last 3 years. It is out of warranty. Now it's battery is getting drained out very fast. It do not last for even 3 hrs. With SIM card inserted, not for even a hour. I want to replace this battery at my cost. Please let me know where can it be replaced by New one ?
Thanks,
Ajay Bidikar.