I'll do the installation myself. Anyone know where I can buy a replacement battery for my iphone 4s?

I had the battery replaced in my iPhone 4 by a guy in a booth on the lower level in Kad Suan Kaew. Go passed Tops, keeping to the right all the way to the end (not going up the steps there.) It's the last booth on the right hand side. I cost me 800 baht installed and took about an hour. I'm sure he'd sell you a battery if you want to do the work yourself.

For (real) Apple service :

ICARE CENTRAL PLAZA AIRPORT CHIANG MAI

3RD FLOOR, MAHIDOL HAIYA MUANG

090-9084217