Try using a new SIM before going any further. It doesn't need to work so the easiest way to get one is to buy a prepaid SIM kit from any retailer.Since the phone is factory unlocked, you can use any common SIM kit (usually Tracfone/Net10).
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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.
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If you continue having issues, there's a problem with the contacts on the SIM reader. If you're comfortable with board level repair, you can fix this issue with a new SIM reader. If you are not, then you're going to need a new [guide|51202|motherboard].
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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 [guide|51202|motherboard].
Try using a new SIM before going any further. It doesn't need to work so the easiest way to get one is to buy a prepaid SIM kit from any retailer. Since the phone is factory unlocked, the common Tracfone/Net10 SIM kit will suffice. If you continue having issues, there's a problem with the contacts on the SIM reader.
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Try using a new SIM before going any further. It doesn't need to work so the easiest way to get one is to buy a prepaid SIM kit from any retailer. Since the phone is factory unlocked, you can use any common SIM kit (usually Tracfone/Net10).
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If you're comfortable with board level repair, you can fix this issue with a new SIM reader. If you are not, then you're going to need a new [guide|51202|motherboard].
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If you continue having issues, there's a problem with the contacts on the SIM reader. If you're comfortable with board level repair, you can fix this issue with a new SIM reader. If you are not, then you're going to need a new [guide|51202|motherboard].
Try using a new SIM before going any further. The easiest way to get this is to buy a prepaid SIM kit from any retailer. Since the phone is factory unlocked, the common Tracfone/Net10 SIM kit will suffice for this. If you continue having issues, there's a problem with the contacts on the SIM reader.
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If you're comfortable with board level repair, you can fix this issue with a new SIM reader. If you are not, then you're going to need a new [https://www.ifixit.com/Guide/LG+G4+Motherboard+Replacement/51202|motherboard].
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Try using a new SIM before going any further. It doesn't need to work so the easiest way to get one is to buy a prepaid SIM kit from any retailer. Since the phone is factory unlocked, the common Tracfone/Net10 SIM kit will suffice. If you continue having issues, there's a problem with the contacts on the SIM reader.
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If you're comfortable with board level repair, you can fix this issue with a new SIM reader. If you are not, then you're going to need a new [guide|51202|motherboard].
Try using a new SIM before going any farther. The easiest way to get this is to buy a prepaid SIM kit from any retailer. Since the phone is factory unlocked, the common Tracfone/Net10 SIM kit will suffice for this. If you continue having issues, there's a problem with the contacts on the SIM reader.
+
Try using a new SIM before going any further. The easiest way to get this is to buy a prepaid SIM kit from any retailer. Since the phone is factory unlocked, the common Tracfone/Net10 SIM kit will suffice for this. If you continue having issues, there's a problem with the contacts on the SIM reader.
+
If you're comfortable with board level repair, you can fix this issue with a new SIM reader. If you are not, then you're going to need a new [https://www.ifixit.com/Guide/LG+G4+Motherboard+Replacement/51202|motherboard].
Try using a new SIM before going any farther. The easiest way to get this is to buy a prepaid SIM kit from any retailer. Since the phone is factory unlocked, the common Tracfone/Net10 SIM kit will suffice for this. If you continue having issues, there's a problem with the contacts on the SIM reader.