Seek Advice: iPhone repair shop

sparkling

My iphone 4s can't be turned on, it can only be turned on when i turned on the charger.

1) Do you know any good phone shop that i can repair my iphone ? (preferably around or near the city)
2) How much do you think it will cost?  

Any advise will be very much appreciated! Thanks!

漂移

battery is gone. Any shop can do it . $50 the most 5mins job . Or DIY battery under $10

北雁南飞71

去苹果店维修应该最好。如果在保修期内还不用花钱。试试吧，祝好。