Sim not working inside the phone
Sim not working inside the phone
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If your SIM isn't working, start with the basics: try a known-good SIM card, reseat the SIM tray, check for a carrier settings update, and make sure the phone isn't in Airplane Mode.
If the issue persists, it could be a faulty SIM reader, antenna problem, or a board-level issue affecting the cellular hardware.
If it's an iPhone, check for panic logs and run an iPhone panic log analysis. In some cases, the logs can reveal baseband or hardware communication issues related to cellular connectivity.
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