Blank field test page in iOS 15.2 and iPhone 13 Pro Max

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Level 1

10 points

Blank field test page in iOS 15.2 and iPhone 13 Pro Max

When entering field test mode utilizing *3001#12345#*, field test page is blank when selecting my carrier.

tried to do the same with my SIM card and an iPhone 11 with iOS 15.2 and it worked.

Tried to force close and reopen, restart phone, enable / disable airplane mode and reset network settings - nothing made the field test page show any info at all

iPhone 13 Pro Max

Posted on Jan 2, 2022 6:49 PM

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Answer 1

Top-ranking reply

bryanr14

Community Specialist

Jan 3, 2022 1:00 PM in response to Dequinho

Hello Dequinho,

Thank you for reaching out in Apple Support Communities. It appears you're attempting to measure the signal strength of your iPhone. We can help point you in the right direction.

For assistance on this inquiry, we recommend to contact your wireless provider. They're best equipped to assist you.

Best regards.

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Answer 2

Dequinho Author

Level 1

10 points

Jan 3, 2022 1:52 PM in response to bryanr14

I am trying to point out that there is likely something wrong (bug) with Apple Field Test Mode. My SIM card is fine. What is not fine is that the same SIM card end up having two different behaviors in the very same iOS feature, in two different phones with the same os version - being one of these behaviors simply not working at all.

I am able to see network carrier information in my old iPhone 11 phone utilizing the very same SIM card, and nothing shows up in my iPhone 13 Pro Max field test screen with the SIM card that shows data in the iPhone 11 - all is just blank

I just want to check my iPhone modem LTE channel selection and whatever carrier aggregation my iPhone is using - my carrier won’t have any information to give me. My phone has that info. And I am not able to access this in my brand new iPhone.

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