When my iPhone’s battery stopped holding a charge, I just brought it in to the Apple Store and they replaced it on the spot. They did a routine software restore first, as a formality, then swapped it out. Bummer that they’re failing already, but the quick exchange mitigated the hassle.

Why on earth would you remove the red wire first?
Anyone who works on electronics/automotive electronics for more than 2 minutes knows you always disconnect (-) first. (for the noobs thats black)

That way you don’t risk shorting anything… Lithium batteries tend to vent/burst into flames when shorted.

hi my iphone will not recognize the usb cable what can i do my phone is dead since it dosent charge