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Released November 4, 2017. Model A1865, A1901. Available as GSM or CDMA / 64 or 256 GB / Silver or Space Gray. (Pronounced the same as "iPhone 10.")

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color stripes on screen: Is this a display issue or logic board error?

Current situation: https://ibb.co/X7nXyvh

All screen is still responsive, lines are moving and are NOT static. Touch works. Is this indicating a display issue or a logic board issue?

It occurred after the phone fell into a lake, but was recovered after a few moments. The water damage indicator in the sim slot is still white, but I suspect that water might have entered the phone at some other place.

Answered! View the answer I have this problem too

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With water damage, you have to decontaminate the logic board before doing anything else, otherwise there will be latent issues down the road. Sometimes water damaged phones will work for a short time before failing completely.

Whatever you do, avoid putting a phone in rice or leaving it sit, drying”, for days on end. The water is inside the phone, on the logic board and under the shields, even under the IC's. The real problem is the mineral deposits that can cause short circuits or the corrosion that is taking place as the water evaporates. Leaving the power on the device accelerates the process.

The iPhone X has a sandwiched logic board which makes it virtually impossible for a proper DIY decontamination, but you can still follow most of these guidelines.

The proper way to treat a wet phone is to do the following:

  • Open your phone and remove the logic board (follow this guide)
  • Inspect the logic board, especially around the connectors and look for corrosion.
  • Inspect both sides of the board. Unfortunately, the board is a sandwich design. The water is usually stuck in the middle.
  • Put your board in a container with >90% isopropyl alcohol and let it sit for a while.
  • Use a soft brush, like a toothbrush and lightly brush away any corrosion you see.
  • Rinse in alcohol and repeat.
  • Let it air dry for a day.
  • Re-assemble and hope for the best.

You should also replace the battery if it has swollen. Resist the temptation to pop it to let the gas out. A compromised Li-ion battery is a fire hazard. If the device appears to power up but behaves erratically, then use a tool like 3uTools to flash the firmware as it may be corrupted.

A professional repair shop that does water damage repair may be able to recover your data because they have access to pro-level ultrasonic baths and specialized cleaners as well as the skills to troubleshoot your board. Many shops have a no data/no fee policy so you don't have to spend money to find out if the data is recoverable or not.

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If you’ve changed your display recently before, chances are you no longer have a water-sealing gasket and adhesive, which probably means water got into the display (or even worse: under the chips)

Could also be logic board, given that the phone fell into a literal lake. I don’t know exactly how to fix it, but it’s worth a Google.

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Comments:

thanks for your response - the phone was never opened or anything replaced. It was also in water before, which was never a problem.

Would you say it makes sense to buy a repair kit, open it and try to dry it further? Or is this screen error indicating that there was a short circuit which can not be fixed anymore, only through replacement?

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Give it a try (drying out the internals) and see how it rolls. If it doesn't work, then blast the board with a hairdryer (for warm air under the solder points).

Last resort can be buying a new board, or whatever needs to be repaired.

Good luck!

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