If you enter an incorrect PIN three times, your SIM will be blocked and request an 8-digit PUK code. ; 10 incorrect attempts will permanently disable the SIM.
To unblock an Airtel SIM card, the required action depends on why it was blocked. Most commonly, SIMs are locked due to multiple incorrect PIN entries, which require a . 1. Unblocking a PUK-Locked SIM how to unblock airtel sim card
If you threw away the starter kit, do not panic. If you enter an incorrect PIN three times,
If your balance is zero and you cannot make calls, you can still call the Airtel Customer Care number for free. how to unblock airtel sim card