Intermittent "No SIM" Error on iPhone

[EthanG01]

Hi everyone,

Over the past two days, I’ve started having an issue with my EE SIM card on my iPhone (running iOS 26).

I keep receiving a random "No SIM Available" pop-up. Tapping "OK" dismisses the prompt, but it has been recurring sporadically throughout the day. Whenever the message appears, my signal temporarily drops to "No Service" before automatically restoring to full coverage shortly after.

To resolve this, I have already tried the following troubleshooting steps:
* Removing the SIM card, carefully wiping it down, and reseating it securely back into the tray.
* Restarting my iPhone multiple times.

Despite these steps, the issue persists. Could this indicate a failing SIM card, a network issue, or something hardware-related? Any help or insight on how to fix this would be greatly appreciated.

Thanks in advance!

[Debbie_G · Accepted solution]

Hi @EthanG01.

Thanks for coming to the community.

As you've already tried reseating the SIM and restarting the phone, it would be worth checking whether the issue follows the SIM or stays with the handset.

If possible, try the EE SIM in another phone for a while, or try a different SIM in your iPhone. That should help narrow down whether the issue is with the SIM or the device.

If the issue continues after those checks, I'd recommend getting in touch with our Customer Support team, who can help investigate further.

Debbie