Chosen Solution
Hello, I have my mom’s old phone and neither of us remember if the screen has been replaced. The bottom corners of the screen is not all the way glued or nailed into the actual phone itself. A random crack randomly appeared after noticing the pop of the screen. Along the crack is a yellow light. The yellow light does not appear any where else on the screen. What should I do?
I agree with @benjamen50 that you should replace your screen. My guess would be that this is actually a damaged LCD (what shows you the image) and it’s just getting bad enough that you’re starting to notice the damage. If it is a bloated battery you should get it replaced ASAP before it explodes in your phone. Screens can be found here: iPhone 6 LCD and Digitizer Battery here: iPhone 6 Battery
