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my iphone 7 have dark line on the top of the screen near the battery icon, is there any alternative way to fix without changing the whole screen or should i had to change the lcd screen, hope you can help,
Before replacing the screen, you could try disconnecting and reconnecting the screen assembly to see if that helps. While you’re there, carefully inspect the flexes and the connectors. Follow this guide. If that doesn’t solve the problem, then consider trying a known-good replacement screen. You can order a replacement screen yourself or consider having an independent repair shop take a look at it.
