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Samsung의 주력 휴대폰 Galaxy S8. 2017년 4월 출시.

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Cellular radio power off after repair

Galaxy S8 (950U) on AT&T

Battery died, replaced battery. Daughter port was also replaced as there were issues with the USB-C port (something got jammed in there, couldn’t clean it out entirely, only was getting partial connection that was just enough to get a charge).

Ever since, no cellular connectivity. I’ve done a factory reset, cache wipe, checked all cables are connected.

Enterint *#*#4636#*#* and checking cell service I see “cellular radio power” is turned off. Cannot turn on. (attached image) Assuming this is because it cannot see the device?

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Talked to provider, nothing to do with their end.1

Any suggestions/thoughts appreciated. It’s about time for an upgrade, so if I can’t fix it, not the end of the world. I’ve seen some similar reports of this issue, willing to experiment on this device if it can help someone else.

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I was dealing with the same situation, I replaced a Screen from a USA phone with a China Phone Screen and Radio turned Off, and the Solution was transferring the Old Charging Port USB Dock. When i checked well i noticed that the Charging Port Dock has a small chip that is different between USA and International Models.

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My techs and I would see this a lot after sloppy repairs from other stores. Usually we would open the device back up, and make sure that the radio wires are connected. 90% of the time that was the issue.

Also when putting in the cover that goes over the charging port, we would see that sometimes the radio connections would become loose. Especially for the one right in the middle of the charging port board.

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