Blocking your lost phone's IMEI makes it useless on every Indian network.
Sanchar Saathi is the Department of Telecommunications' portal and app for mobile users.
If the phone turns up, or the police recover it, go back to the CEIR page on Sanchar Saathi and choose the unblock option.
Buying a used phone this festive season? Do the IMEI check first. A cheap phone that turns out to be blocked is money gone.
Lost Your Phone? How to Block It on Sanchar Saathi (CEIR)
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