To block lost phone India wide, you use the CEIR service on the government’s Sanchar Saathi portal. It cuts off your handset on every Indian mobile network, so a thief cannot use it with any SIM. However, you need a few things ready before you start.
Quick answer
- Where: the CEIR form on sancharsaathi.gov.in, or the Sanchar Saathi app.
- You need: a police report, a duplicate SIM of your lost number, an ID proof and the phone’s IMEI.
- Time: blocking usually takes effect within 24 hours, per the portal.
- You get: a Request ID, used to track the case or unblock the phone later.
What to keep ready first
The portal lists four things. First, a police report: file it first and keep a copy. Second, a duplicate SIM for your lost number from your telecom provider, because the OTP goes to that number. Third, an identity proof. Fourth, the purchase invoice, which is optional but helpful.
Also note the SMS service on a reissued SIM is switched on 24 hours after activation, according to the Sanchar Saathi portal. So get the duplicate SIM early.
Why you should act quickly
A lost phone often holds your UPI apps, email and messaging accounts. Blocking the handset on the network is one layer of protection, but it is not the only one. So also lock the device remotely from your Google or Apple account, and tell your bank if you use mobile banking on it. Change passwords for key accounts as soon as you can.
How to find your IMEI
The IMEI is a 15 digit number that identifies your handset. On a working phone, dial *#06# to see it. If the phone is lost, look at the box, the invoice or the phone’s account page for registered devices. A dual SIM phone has two IMEI numbers, so note both.
Steps to block a lost phone
- File a police complaint and keep the copy.
- Get a duplicate SIM for the lost number, so you can receive the OTP.
- Open the CEIR section on the portal or in the app and choose the block option.
- Fill in the IMEI, device details, the place and date of loss, and attach your ID and police report.
- Verify with the OTP sent to your number and submit.
- Save the Request ID shown at the end.
Reporting to the State Police is another route to the same block, as the portal notes. Blocking stops the handset from working on all Indian networks, usually within 24 hours.
What happens after the block
If someone tries to use the blocked phone, a traceability report is created. You receive an SMS, and the report also goes to the police station where you filed the complaint. Then you can follow up with the police for recovery. You can check the request status in the app or on the portal.
How to unblock a phone you found
Unblock only a phone that is back in your hands. First, tell the local police that it is found. Then use the unblock option with your Request ID. However, if you registered the block with the State Police, you must ask them to unblock it.
A quick check before you buy a second hand phone
The same portal has a Know Your Mobile check. Send KYM followed by the 15 digit IMEI to 14422 to see whether a handset is genuine. This is a useful habit before paying for a used phone. Our guide to checking SIM cards registered in your name covers a related safety check.
Common mistakes to avoid
The most common mistake is skipping the police report, because the form asks for it. Another is losing the Request ID, which you need for tracking and unblocking. Finally, do not give your OTP to anyone who calls claiming to help you recover the phone. The OTP is only for your own form.
FAQ
How do I block my lost phone in India?
File a police report, then submit the CEIR form on the Sanchar Saathi portal or app with your IMEI and ID. You will receive a Request ID to track it.
How long does CEIR blocking take?
The portal says a block usually takes effect within 24 hours. It then stops the phone on all Indian networks.
Can I unblock the phone if I find it?
Yes. Tell the police first, then use the unblock option with your Request ID. If the block was filed with the State Police, they must unblock it.