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LG G4는 늘 그렇듯이 고급 사양과 세련된 패션 감각을 강조하여 프리미엄 스마트폰 시장에서 눈에 띄는 제품으로 2015년 6월 초에 미국에서 출시되었습니다. 이동 통신사에서 판매하거나 잠금 해제 (미국 또는 국제) 된 휴대폰의 각 버전에 따라 모델 번호는 다릅니다. 일부 LG G4에 부팅 루프 문제가 있는 것으로 알려져 있습니다.

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옵션

Phone not accepting Sim Card

So my old LG G4 (H815 Factory Unlocked) isn't playing ball with my Boyfriends 3 Sim. The phone is confirmed Unlocked and I've been able to use my GiffGaff sim in the phone which further confirms it's unlocked. However it refuses to accept a 3 sim (Both my new 3 Sim; his and one from the store)

I've tried factory resetting the phone a number of times, rebooting, opening it up and inspecting the prongs. Nothing; any advice?

I've also fiddled with APN settings and LTE/GSM settings.

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옵션

While this is likely a hardware issue with the cellular radio, try another SIM card. It doesn't need to work, so use a dead SIM that's been deactivated or an expired T-Mobile SIM. The other option is to buy a prepaid SIM card kit from Net10 or Tracfone since the phone isn't carrier locked.

If you continue having issues, there's a problem with the cellular radio or SIM slot. If you're comfortable with board level repair, you can try to troubleshoot further. f you are not, then you're going to need a new motherboard.

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See, I failed to mention that it did detect the sim once, it had a data value but no connection. I think a motherboard replacement may be in order though.

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That could mean the SIM is inactive. If you know with 100% certainty it's active then it might be the board.

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Sim is 100% active; it's been working in another phone. Sounds like a mainboard issue

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Sim card not working other phone simcard is working

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