Listing said this battery was compatible with a 3gs 16gig iphone. I installed this battery and induced the iphone to reboot every 5 minutes. After connecting to itunes, an error code kept appearing. The error codes translation was "bad battery/wrong battery". the battery i was sent was a APN 616-0347 3.7v(covered by another sticker). The battery required for a 3gs 16/32 is a APN 616-0435 4.51whr. Not worth the time and effort to send back. Just fix the listing. Thanks. 1 star for the quick shipping.