What does “Invalid SIM” mean?
The phone or network cannot accept the current SIM credentials.
By NavinPublished 2026-10-02
Common causes
- Inactive or damaged SIM
- Carrier lock
- Account or activation issue
What to try first
- Restart the phone
- Reseat the SIM while powered off
- Contact the carrier using its official support channel
What not to do
- Do not trim or modify a SIM
- Do not repeatedly enter unknown codes
Stop if the phone is unsafe
Disconnect power and stop using a swollen, smoking, leaking, physically damaged or extremely hot phone. Contact the manufacturer or a qualified repair provider.
When support may be needed
Contact the carrier for account, SIM/eSIM, PUK, coverage or network-lock issues. Contact the manufacturer or qualified repair provider when the warning follows impact, liquid, unsafe heat or persistent built-in hardware failures.