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- If your device has a physical SIM card and you've completed the previous step, try using another SIM card. If you don't have one, go to your carrier's retail store and ask them to test with another SIM card. You might need to replace your SIM card. If you still see an alert about your SIM card, you might need service.
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Sep 16, 2024 · If you see 'invalid SIM' or 'no SIM' on your iPhone or iPad. 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.
- 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.
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- 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.
Jan 13, 2019 · The most likely symptom would be a slowing of the phone, as it repeatedly attempted to retrieve data from the failing SIM. It could theoretically slow it down a whole lot, depending on how the phone interpreted the data fault.
Sep 6, 2022 · There are steps you can take to help narrow down if this is an issue with the physical SIM card or the SIM card reader. We'll place the link and steps found below. Skip any you have already tried. If you see 'invalid SIM' or 'no SIM' on your iPhone or iPad - Apple Support.
Apr 4, 2021 · What to Do If Your iPhone Suddenly Displays 'SIM Failure,' 'No SIM Card Installed,' or 'Invalid SIM'? This guide provides in-depth instructions on how to resolve it.
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 .
