The first thing I would do is run this to get a baseline: [link|http://support.apple.com/en-us/120579|Apple Repair Assistant|new_window=true]. This will at least give you a baseline of what to expect and include any possible HW failures. ***Watch for an eSIM issue - dead eSIM=dead cell radio.***
After you run the Repair Assistant, I would try to reset the network settings. ***That said, radio failures are not common, but I have seen them more on the 11 and 12 Pro to a lesser degree than the other phones, which are infamous like the Intel 4G GSM only (AT&T/T-Mo locked exclusive variant) A1660 iPhone 7 and to a lesser degree, the CDMA Qualcomm iPhone 7.***
[quote|format=featured]
***BEWARE: If the cellular option greys out, the radio is likely dead, but you can at least save the data by doing a WiFi or PC backup. This is key, as the last option will ruin any chance. I would encourage you to use this window before going nuclear and potentially bricking the iPhone.***
[/quote]
If, for some reason, it is already greyed out under Settings, there is another option you can try: Put the phone into recovery mode and then update the device there, as it will reload the radio firmware and potentially fix this.
[quote|format=featured]
***CAUTION: BACKUP THE PHONE FIRST BEFORE DOING THIS! IF THE RADIO CHIP FAILS WITHOUT A BACKUP THE PHONE WILL LIKELY NEVER ACTIVATE AGAIN - AND YOUR DATA IS G O N E. Let me say it again: GONE.***
[/quote]
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I will say that most of the time, when the cell chip is dead with iPhones, it just takes newer iOS builds and the cell option remains dead. ***The problem is that you're dead in the water if it fails and doesn't take the update, and your phone is in a recovery mode loop***
The first thing I would do is run this to get a baseline: [link|http://support.apple.com/en-us/120579|Apple Repair Assistant|new_window=true]. This will at least give you a baseline of what to expect and include any possible HW failures.
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The first thing I would do is run this to get a baseline: [link|http://support.apple.com/en-us/120579|Apple Repair Assistant|new_window=true]. This will at least give you a baseline of what to expect and include any possible HW failures. ***Watch for an eSIM issue - dead eSIM=dead cell radio.***
After you run the Repair Assistant, I would try to reset the network settings. ***That said, radio failures are not common, but I have seen them more on the 11 and 12 Pro to a lesser degree than the other phones, which are infamous like the Intel 4G GSM only (AT&T/T-Mo locked exclusive variant) A1660 iPhone 7 and to a lesser degree, the CDMA Qualcomm iPhone 7.***
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[quote|format=featured]***BEWARE: If the cellular option greys out, the radio is likely dead, but you can at least save the data by doing a WiFi or PC backup. This is key, as the last option will ruin any chance. I would encourage you to use this window before going nuclear and potentially bricking the iPhone.***[/quote]
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[quote|format=featured]
+
***BEWARE: If the cellular option greys out, the radio is likely dead, but you can at least save the data by doing a WiFi or PC backup. This is key, as the last option will ruin any chance. I would encourage you to use this window before going nuclear and potentially bricking the iPhone.***
+
[/quote]
If, for some reason, it is already greyed out under Settings, there is another option you can try: Put the phone into recovery mode and then update the device there, as it will reload the radio firmware and potentially fix this.
-
[quote|format=featured]***CAUTION: BACKUP THE PHONE FIRST BEFORE DOING THIS! IF THE RADIO CHIP FAILS WITHOUT A BACKUP THE PHONE WILL LIKELY NEVER ACTIVATE AGAIN - AND YOUR DATA IS G O N E. Let me say it again: GONE.***[/quote]
+
[quote|format=featured]
+
***CAUTION: BACKUP THE PHONE FIRST BEFORE DOING THIS! IF THE RADIO CHIP FAILS WITHOUT A BACKUP THE PHONE WILL LIKELY NEVER ACTIVATE AGAIN - AND YOUR DATA IS G O N E. Let me say it again: GONE.***
The first thing I would do is run this to get a baseline: [link|http://support.apple.com/en-us/120579|Apple Repair Assistant|new_window=true]. This will at least give you a baseline of what to expect and include any possible HW failures.
After you run the Repair Assistant, I would try to reset the network settings. ***That said, radio failures are not common, but I have seen them more on the 11 and 12 Pro to a lesser degree than the other phones, which are infamous like the Intel 4G GSM only (AT&T/T-Mo locked exclusive variant) A1660 iPhone 7 and to a lesser degree, the CDMA Qualcomm iPhone 7.***
[quote|format=featured]***BEWARE: If the cellular option greys out, the radio is likely dead, but you can at least save the data by doing a WiFi or PC backup. This is key, as the last option will ruin any chance. I would encourage you to use this window before going nuclear and potentially bricking the iPhone.***[/quote]
If, for some reason, it is already greyed out under Settings, there is another option you can try: Put the phone into recovery mode and then update the device there, as it will reload the radio firmware and potentially fix this.
[quote|format=featured]***CAUTION: BACKUP THE PHONE FIRST BEFORE DOING THIS! IF THE RADIO CHIP FAILS WITHOUT A BACKUP THE PHONE WILL LIKELY NEVER ACTIVATE AGAIN - AND YOUR DATA IS G O N E. Let me say it again: GONE.***[/quote]