my phone screen has a faint single crack across bottom of screen. It doesn't effect anything and can still see the screen fine, phone works fine. The cost of new screen is £100 to £140 so for me it doesn't seem worth getting done. When new iPhone comes out if it does more than 6s I will end up getting it. Question is would I get over £100 more for selling a second hand iPhone 6s with new screen than if I sold it as it is with the crack.