pin for eSIM?

I tried to set a PIN for my 15 Pro's eSIM (iOS 17.2). BAD IDEA. Cell service locked up and instructed me to get a "PUK code". I couldn't get help online (couldn't call them) I went to a T-Mobile shop and the guy started changing settings on my phone- guess he never dealt with this. Then he changed my wifi network and went into the back room (left the phone with me). I asked him what he was doing with the network named "data transfer" and couldn't get an explanation. It didn't feel right so I left and tried to do it from my wife's phone with limited success- I ended up with 3 lines using the same phone number. It worked but failed later in the day. Back to SOS.


So what now. Does a PIN do anything besides breaking cellular?

iPhone 4s, iOS 9

Posted on Dec 13, 2023 4:49 PM

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Question marked as Top-ranking reply

Posted on Dec 15, 2023 7:44 AM

ne_291 wrote:

Hi Lawrence,

On day 3 of my issue, I went to another T-Mobile shop. I asked about the PUK and he said he's only seen them used with "old Galaxy phones" and didn't know why I got this on an iPhone. I took screenshots of all anomalies and showed him. Ultimately, he deleted my primary eSIM, and reassigned it to my number. All is back to normal now, knock titanium.

I still don't know if assigning a SIM PIN to an eSIM makes any sense. The option is there but info on this is seriously lacking.

Adding a SIM PIN means that any time the phone is restarted you would have to enter the PIN, but if your phone has a passcode that would also prevent someone from using the phone with or without a SIM PIN, so for an eSIM it would be redundant. For a physical SIM a PIN is a good idea, because it would prevent someone from stealing your phone, taking the SIM out of your phone and putting it in another phone and using your account.


Thus, I don’t see any real benefit for a SIM PIN for an eSIM.

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9 replies
Question marked as Top-ranking reply

Dec 15, 2023 7:44 AM in response to ne_291

ne_291 wrote:

Hi Lawrence,

On day 3 of my issue, I went to another T-Mobile shop. I asked about the PUK and he said he's only seen them used with "old Galaxy phones" and didn't know why I got this on an iPhone. I took screenshots of all anomalies and showed him. Ultimately, he deleted my primary eSIM, and reassigned it to my number. All is back to normal now, knock titanium.

I still don't know if assigning a SIM PIN to an eSIM makes any sense. The option is there but info on this is seriously lacking.

Adding a SIM PIN means that any time the phone is restarted you would have to enter the PIN, but if your phone has a passcode that would also prevent someone from using the phone with or without a SIM PIN, so for an eSIM it would be redundant. For a physical SIM a PIN is a good idea, because it would prevent someone from stealing your phone, taking the SIM out of your phone and putting it in another phone and using your account.


Thus, I don’t see any real benefit for a SIM PIN for an eSIM.

Dec 14, 2023 9:13 PM in response to Lawrence Finch

Hi Lawrence,


On day 3 of my issue, I went to another T-Mobile shop. I asked about the PUK and he said he's only seen them used with "old Galaxy phones" and didn't know why I got this on an iPhone. I took screenshots of all anomalies and showed him. Ultimately, he deleted my primary eSIM, and reassigned it to my number. All is back to normal now, knock titanium.


I still don't know if assigning a SIM PIN to an eSIM makes any sense. The option is there but info on this is seriously lacking.





Dec 15, 2023 12:03 PM in response to ne_291

It’s not a feature offered by Apple; it is a feature of the SIM/eSIM standard. So Apple is obligated to implement it unless they want to defy the standard.


And it does have a security purpose for people who (foolishly) don’t have a passcode on their iPhone, and also for people with dumb phones that support eSIM. This will become more common as physical SIMs are phased out by carriers.

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pin for eSIM?

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