Chosen Solution

had the phone for just over a year, it had a history of fast battery drainage. I have replaced the battery twice, but at this point it will not turn on, charge or display the red battery symbol. i have used third party chargers and cables. any idea what chip i need to replace?

I do agree, it could be the u2ic. However, what happens when you plug the charger into the phone, without the battery in it? [linked product missing or disabled: IF268-037-1]

Hey Ciaran, in most cases your iPhone will not charge due to obstructions with the charging port such as dirt. You may try cleaning the port with a needle or get certified USB cables. You can read the full instructions here: http://www.technobezz.com/fix-iphone-won