A stolen phone is not just a lost device — it is a live login to your bank, your UPI apps, your email and your photographs. The single most useful thing you can do is make the handset itself worthless, and India has a free government system that does exactly that.
It is called CEIR, it blocks the phone on every Indian network at once, and most people have never heard of it. Here is the correct order to do things in, because getting the sequence wrong will lock you out of the system entirely.
Do These Six Things, in This Order
The order matters more than the speed. Step two is the one people skip, and skipping it makes step three impossible.
1. File a police complaint and keep the copy
Do this first. CEIR requires a police complaint copy as a mandatory upload, so nothing else can proceed without it. Most states accept an online e-complaint through the state police portal, and the acknowledgement it generates is enough — you do not need a full FIR, despite what most articles claim. What you do need is the complaint number and the police station name, because both are mandatory fields on the CEIR form.
2. Get a duplicate SIM on the same number
This is the step that catches people out. CEIR sends a verification OTP to the lost mobile number, so you must have that number working again on a new SIM before you can file the block request.
Go to your operator’s store with ID and ask for a replacement SIM on the same number. Then wait: under telecom rules, SMS on a re-issued SIM is only enabled 24 hours after activation. That delay is deliberate, an anti-fraud measure, and it cannot be bypassed. Plan for it rather than being surprised by it.
3. Block the IMEI on CEIR
Go to ceir.sancharsaathi.gov.in and open the block request form. You will need:
- The lost mobile number, and the second number if it was a dual-SIM phone
- The 15-digit IMEI for each SIM slot
- Device brand and model, and the phone’s price
- Place, date and State/district of loss
- Police station name and complaint number
- Owner name and address, plus an identity document
- Uploads: the police complaint copy, and a masked Aadhaar, PAN, voter ID or driving licence
The purchase invoice is optional, which is worth knowing if you bought the phone years ago. Submit, verify with the OTP, and save the Request ID that comes back — it is how you track and later unblock.
The service is free. There is no fee anywhere in the process, and any site or agent charging for it is not official.
4. Secure your money before you secure anything else
Freeze net banking, block your cards and disable UPI on the lost device through your bank’s helpline. If any unauthorised transaction has already gone through, call 1930 immediately — the speed of that call decides whether the money can be frozen in the receiving account. The escalation ladder in our guide to UPI fraud and recovery applies exactly as written here.
5. Remotely lock and erase
CEIR blocks the device on networks. It does not touch your data. For that, use Google’s Find Hub (previously Find My Device) at the Android account page, or Find My on iCloud for an iPhone. Mark the device as lost to lock it and display a contact message, and erase it if you have accepted that it is gone.
Do this in parallel with everything else — it needs no police report and no waiting period.
6. Change the passwords that matter
Google or Apple account first, because it controls password recovery for everything else. Then email, then banking, then WhatsApp — reinstalling WhatsApp on the new SIM automatically logs the thief out of your account.
Where to Find Your IMEI After the Phone Is Gone
You cannot dial *#06# on a phone you no longer have, so use one of these:
- The original box. The IMEI is printed on the barcode label.
- The purchase invoice, which usually lists it.
- Your Google account. Sign in to the account page, open the devices section and check the details of the missing phone.
- Apple ID. The device list under your account shows the IMEI for each registered iPhone.
Note the IMEI of every phone you own now, before you need it. It takes ten seconds and saves an unpleasant scramble later.
What Blocking Actually Does
Once approved, the IMEI is blacklisted across all Indian operators within 24 hours. The handset will not register on any Indian network with any SIM — not your operator, not a different one, not a SIM bought in another state. It becomes, for practical purposes, a paperweight in India.
Two limits worth being honest about. The block is national, so a phone taken abroad can still be used on a foreign network. And the device can still connect over Wi-Fi, which is why the remote erase in step five matters independently of the block.
There is an upside beyond deterrence: when someone does insert a SIM into a blocked handset, the system registers it, and that trace is passed to the police. Government figures put the numbers at roughly 42 lakh devices blocked, 26 lakh traced and over seven lakh actually returned to their owners — recovery is not guaranteed, but it is far from theoretical.
Getting the Phone Back and Unblocking It
If the handset is recovered, inform the police first, then use the unblock form on the same portal with your Request ID. The block lifts and the device works normally again.
One important caveat: if the block was placed by the State Police rather than by you, only the police can lift it. Going through the portal will not work in that case.
Buying a Second-Hand Phone? Check It First
The same system runs in reverse. Before paying for a used handset, run its IMEI through the KYM (Know Your Mobile) check on Sanchar Saathi. It tells you whether the IMEI is valid, duplicated, or already blacklisted as stolen — which is exactly the phone you do not want to buy. Sellers who resist a two-minute IMEI check are telling you something.
Reduce the Damage Before It Happens
A stolen phone hurts in proportion to how much it holds. Screen lock with a strong PIN rather than a pattern, biometrics enabled, lock screen notifications hidden so OTPs are not readable on a locked phone, automatic cloud backup on, and Find Hub or Find My switched on and tested.
It is also worth checking what a thief could do with your identity afterwards. Run a check on how many SIM cards are registered on your name, tighten permissions with an Android privacy checkup, and make sure your photos and videos are actually backing up rather than only appearing to. We keep these India-specific safety walkthroughs current at Techleez com.
Frequently Asked Questions
Is CEIR blocking free?
Yes, completely. There is no fee on the portal at any stage, and any agent charging for it is running a side business, not an official service.
Do I need an FIR to block my phone?
You need a police complaint copy and complaint number, which an online e-complaint acknowledgement satisfies in most states. A full FIR is not specifically required.
Does the phone need to be switched on to be blocked?
No. The block is applied to the IMEI at the network level, so it takes effect whenever the device next tries to connect, regardless of its state now.
Will blocking the IMEI delete my data?
No. CEIR only stops the device working on Indian networks. To erase data, use Find Hub on Android or Find My on iCloud.
How long does blocking take?
Within 24 hours of the request being approved, across all Indian operators.
Can I block the phone without getting a duplicate SIM first?
Not practically, because the form is verified by an OTP sent to the lost number. Get the replacement SIM first, and remember SMS only starts working 24 hours after it is activated.
Fold Smith
Fold Smith is a technology journalist and the lead editor of The Techleez, an India-first publication that decodes technology, digital payments, streaming and online culture for everyday readers. From UPI and fintech explainers to OTT streaming guides, Android tips and online-safety checklists, he personally tests the apps, tools and services featured on the site before recommending them. His focus is practical, research-backed guidance that helps Indian readers make smarter digital decisions — spend less, stream better and stay safe online. When he is not writing, he is usually tracking NPCI circulars, first-day-first-show box office numbers, or the next big OTT premiere.
More from this author →
