The modem does not recognize Korean SIM cards (what?)
(06-12-2022, 08:20 AM)bdicewk Wrote: I visited a shop of the phone provider today, and they did something in their system (not with the phone or the sim card), and the sim card started to work (quite buggy though). I cannot be sure if their changes in the system made the phone recognize the sim card, or this is just a concidence, but none of these sounds completely reassuring for me: if this is a coincidence, then I still don't know the real root cause of the problem. And if this is not a coincidence, then this does not look like quite a well design, because the *detection* of the SIM card actually requires some interaction with the network.
i also tested dead (no-service) sim card in pinephone. it shows that sim card is connected and also shows 4g symbol for no reason, but no service.

physical dimension of nano-sim and micro-sim are slightly different for thickness. nano-sim is slightly thinner than micro-sim. it might cause some issues, particularly if adapters are used.

good reminder for others:

Messages In This Thread
RE: The modem does not recognize Korean SIM cards (what?) - by zetabeta - 06-13-2022, 04:12 AM

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