Chosen Solution
Why Iphone 5c has floating lines all across display, the rest is working fine
sounds like a connector problem if its not the lcd
Turn the phone off, disconnect the battery and disconnect the lcd and digitizer cables. Reconnect the lcd and digitizer cables firmly, then the battery and turn it back on. If the problem is still there, it’s probably a faulty lcd. I have fixed hundreds of iPhone 5c’s and run into this issue every now and then.
