I am saying cellular issues while trying to use cellular network please resolve this issue or solve iOS update
Cannot use my sim
Earlier iPhone models
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Cannot use my sim
Earlier iPhone models
1.
Try to remove and reinsert the SIM card.
If it doesn't help visit your carrier, maybe the SIM card is damaged, ask for a replaced (new) card. Normally it is free.
Ask also to check if the SIM tray is bent, as even a tiny misalignment can cause the SIM card to not fully connect with the internal contacts in your iPhone.
2.
See these Apple articles below:
If you see No Service, Searching, or SOS on your iPhone or iPad
If you see No Service, Searching, or SOS on your iPhone or iPad - Apple Support
Manually update your carrier settings on your iPhone or iPad
Manually update your carrier settings on your iPhone or iPad - Apple Support
Update your network provider settings manually on your iPhone or iPad
Update your network provider settings manually on your iPhone or iPad – Apple Support (UK)
If you see a Cellular, Ultra Wideband, or Apple Pay Issue message after an iOS update or restart
How to unlock your iPhone for use with a different carrier
How to unlock your iPhone for use with a different carrier - Apple Support
You need to contact your Carrier.
Or do you need the PUK code?, if so see this Apple article: Use a SIM PIN for your iPhone or iPad
Use a SIM PIN for your iPhone or iPad - Apple Support
1.
Try to remove and reinsert the SIM card.
If it doesn't help visit your carrier, maybe the SIM card is damaged, ask for a replaced (new) card. Normally it is free.
Ask also to check if the SIM tray is bent, as even a tiny misalignment can cause the SIM card to not fully connect with the internal contacts in your iPhone.
2.
See these Apple articles below:
If you see No Service, Searching, or SOS on your iPhone or iPad
If you see No Service, Searching, or SOS on your iPhone or iPad - Apple Support
Manually update your carrier settings on your iPhone or iPad
Manually update your carrier settings on your iPhone or iPad - Apple Support
Update your network provider settings manually on your iPhone or iPad
Update your network provider settings manually on your iPhone or iPad – Apple Support (UK)
If you see a Cellular, Ultra Wideband, or Apple Pay Issue message after an iOS update or restart
How to unlock your iPhone for use with a different carrier
How to unlock your iPhone for use with a different carrier - Apple Support
You need to contact your Carrier.
Or do you need the PUK code?, if so see this Apple article: Use a SIM PIN for your iPhone or iPad
Use a SIM PIN for your iPhone or iPad - Apple Support
I am saying cellular issues while trying to use cellular network please resolve this issue or solve iOS update