Why does my SIM card say invalid SIM?
The SIM card is not valid(active) or damaged.
If the SIM card is valid(active), you need to perform a carrier reset.
If the SIM card is damaged, you need to get a new SIM card from your carrier.
What causes SIM failure?
A SIM card can fail if it is inserted into a device that is not compatible with its format. If a SIM card is inserted into a device that requires a different format, it will not work. Additionally, SIM cards can become damaged if they are not inserted correctly into the device or if the device is dropped.
How do you know if your SIM card is damaged?
If you encounter any issues using your SIM card, you can check if the card itself is broken. To do so, you can use a SIM card reader which is an inexpensive device that reads and stores data on your SIM card.
Or, you can simply contact your service provider and they will be able to tell you whether your SIM card is damaged.
Why does SIM Failure keep popping up on my iPhone?
There are a few potential reasons for this:
1. Your iPhone is not on the supported carrier network.
2. Your iPhone’s SIM card is not properly seated in the SIM tray.
3. There may be an issue with your carrier’s network.
4. There may be an issue with your iPhone’s software.
How long does a SIM card last?
If you do not remove a SIM card from your phone, it should last as long as the phone itself.
Why is my SIM card not working in my phone?
The card could be damaged, the phone could be configured to only work with a specific carrier, or the SIM card might not be activated. If a SIM card is not working, it can usually be fixed by restarting the phone, reinserting the SIM card, or replacing the SIM card.