Chosen Solution

Hi, I have an iPhone 6 which I bought not turning on. The screen is cracked. I have opened it up and both water sensors are still white so doesn’t look like water damage. I have changed the screen and battery but it is not switching on. It is also not being recognised in iTunes. The motherboard isn’t getting hot or overheating. Any ideas? Thanks

Do a Apple hard reset put and hold the power button and home button at the same time for 10-20seconds