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- If you receive an alert that says Invalid SIM or No SIM Card installed, follow these steps. Make sure you have an active plan with your wireless network provider. If your iPhone is locked to a network provider, it can only be used with that network provider. To check if your iPhone is unlocked, go to Settings > General > About.
support.apple.com/en-gb/108914
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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.
May 22, 2024 · If you see “Invalid SIM” instead of “No SIM Card installed,” it’s much more likely you have a hardware problem. This message means that your iPhone can connect to your SIM, but the data...
- Make Sure You Have an Active Cellular Plan. While it might seem obvious, it's worth double-checking that your wireless carrier plan (such as with AT&T, Verizon, etc.)
- Restart your iPhone or iPad. If from out of nowhere you're suddenly seeing an "invalid SIM" or "no SIM" error message, you may have a software glitch causing problems with your device.
- Perform a Force Restart. If the regular restart didn't work, it's time to try the force restart. If you're unfamiliar with the force restart function, this is just a different way of cutting the power on your iPhone or iPad.
- Check for a Carrier Settings Update. A carriers settings update comes directly from your cellular provider, and helps to improve cellular network connectivity and provide support for new features.
May 11, 2012 · This may result in receiving an error message stating “No SIM Card installed” or “Invalid SIM”. Use these troubleshooting steps to solve this issue. Contents [hide] Restart device. Reseat SIM Card. Update the Software. Replace SIM Card.
- SIM Card. Your SIM card is actually a small computer chip embedded into plastic so it can be transferred easily across devices. Although they are resilient, they can become faulty, or may not be compatible with the phone you’ve transferred it into.
- Phone is Carrier Locked. Especially in the US, where the cost of a cell phone is often paid off in installments, service providers implement locks to prevent you from utilizing your equipment with competitors.
- Software Bug. Occasionally, incompatible or corrupted software can cause network issues with an iPhone. It is infrequent, but worth ruling out before embarking on deeper level hardware fixes.
- Faulty SIM slot. This occurs most frequently on newer models of iPhone. Beginning with the iPhone XR, some models feature a Apple iPhone Parts. On previous models, the slot is soldered onto the logic board.
Aug 22, 2024 · Short Summary. The “Invalid SIM” or “No SIM” error mostly results from SIM card issues, a software glitch, some hardware failure, or network problems. Thankfully, it’s easy to fix it by restarting your iPhone, updating iOS and carrier settings, ensuring the SIM card is properly placed in its try, or trying a new SIM card or eSIM.
Jan 2, 2023 · Apple says in a support document that if you're seeing either SIM error message, you should check for and install any available carrier setting updates to potentially fix the...
