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  2. Sep 16, 2024 · If you get an alert that says Invalid SIM or No SIM Card installed, follow these steps. Make sure that you have an active plan with your wireless carrier. If your iPhone is locked to a carrier, it can be used only by that carrier.

  3. Feb 17, 2024 · Experiencing SIM card issues on your iPhone 11? Learn how to troubleshoot SIM failure and get your device back up and running smoothly.

  4. Nov 27, 2021 · Level 1: Joiner. 1 Posts. 1 Topics. 0 Solutions. Registered: 27-11-2021. 27-11-2021 16:08. Hi. Does anyone know if my new SIM card with O2 will be compatible with my I phone 11 as I don’t think it is with 5G network. Message 1 of 2. 1,090 Views. 0 Kudos. Reply. All forum topics. Previous Topic. Next Topic. 1 ACCEPTED SOLUTION. Bambino.

  5. If it works, replace your SIM card. You can request one from your service provider, or visit one of their physical locations. As a workaround, use your phone’s eSIM instead.

    • Tech Writer
    • Idownloadblog
    • Enable and disable Airplane mode. First, go to iPhone Settings or the Control Center and turn on Airplane mode. After waiting for about 15 seconds, please turn it off.
    • Turn on the SIM line. If you use two SIM cards and it shows No SIM, go to iPhone Settings > Cellular > tap a SIM and enable the switch for Turn On This Line.
    • Restart your iPhone. Often, the most frustrating problems are fixed by a simple restart. If you’re getting SIM card errors on your iPhone, turn it off and after waiting for a minute, turn it back on.
    • Gently wipe and reinsert the SIM card. Sometimes after restarting my four-year-old iPhone, I would get the SIM Not Valid or No SIM Card message even though a functioning card is inserted.
  6. Sep 23, 2022 · Your SIM card connects your iPhone 11 Pro to your carrier's network and stores important information like your phone number. Sometimes ejecting and reinserting the SIM card can fix cellular issues by allowing your iPhone to reestablish its connection to your carrier's network.

  7. Nov 12, 2021 · An iPhone usually says a SIM is not supported because your iPhone is locked to your carrier. This means you can’t insert a SIM card from a different carrier if you switch. To check if your iPhone is locked, open Settings and tap General -> About -> Carrier Lock .

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