Lost your phone in a market crowd, a train or an auto? You can block a lost phone across every Indian network on the government’s Sanchar Saathi portal, so nobody else can use it here, and the system flags it if someone tries. The Department of Telecommunications shows 62.98 lakh phones blocked and 38.94 lakh traced so far.
The block itself takes ten minutes. What trips most people up is the order of steps, because one item has to be ready before the form even lets you in. That’s in section 3.
⚡ Key takeaways
- First 10 minutes: try Find Hub (Android) or Find My (iPhone), lock the phone and show a contact number.
- Next: block the SIM with your operator and get a duplicate SIM, then file a police complaint.
- Then: block the handset on Sanchar Saathi (CEIR) using the police complaint number and the duplicate SIM for OTP.
- Protect money: call your bank, change your Google or Apple password, and report fraud on 1930.
- Found it? Unblock it on the same portal with your request ID.
What “Block Your Lost Phone” on Sanchar Saathi Does
Sanchar Saathi is a citizen service from the Department of Telecommunications (DoT). Its lost-phone tool runs on CEIR, the Central Equipment Identity Register, which works with your phone’s IMEI number rather than your SIM.
According to the Sanchar Saathi FAQ, the facility blocks a lost or stolen phone “in network of all telecom operators so that lost/stolen devices cannot be used in India.” If anyone tries to use the blocked phone, the system generates traceability. Once you find your phone, you can unblock it for normal use.
That’s the key difference from just blocking your SIM. A thief can throw your SIM away and put in a new one. Blocking the IMEI makes the handset itself useless on Indian networks.
The First 10 Minutes: Find, Lock, Message
Before you touch the CEIR form, try to locate the phone. Sometimes it’s just under a seat.
On Android: Find Hub
Open Find Hub on a friend’s phone or a laptop and sign in with your Google account. Google’s help page says you can:
- See it on a map, or its last known location if it’s offline.
- Play a sound at full volume for 5 minutes, even if it’s on silent.
- Mark it as lost, which locks the screen and lets you show a message and a contact number.
Find Hub only works if the phone has power, is online, is signed in to Google and has Find Hub turned on.
On iPhone: Find My
Use Find My on another Apple device or at icloud.com/find. Apple’s guidance is to mark it as lost first, which locks it with your passcode and suspends Apple Pay cards. Apple also says to file a police report and to erase the phone only as a last resort, because erasing can’t be undone.
⚠️ Watch out
Don’t erase your phone in panic. Apple notes that keeping the device in Find My keeps Activation Lock on, which makes a stolen iPhone harder to resell. Erase only once you’re sure it isn’t coming back.
Also readIs My Phone Hacked? 9 Checks for Android and iPhone Users Before You Block a Lost Phone: Get These Ready
This is the catch from the start. The CEIR form asks for an OTP on your lost mobile number, which means you need a duplicate SIM first. Here’s the official list of prerequisites from the CEIR blocking form:
| What CEIR asks for | Required? | Where to get it |
|---|---|---|
| Police report / complaint copy | Yes | Your local police station, or your state police’s online lost-article service where available |
| Re-issued (duplicate) SIM for the lost number | Yes, for OTP | Your Jio, Airtel, Vi or BSNL store, with ID |
| Valid identity proof | Yes | Aadhaar, PAN, voter ID, driving licence |
| Purchase invoice | Optional | Your email, Flipkart or Amazon order page, or the shop bill |
| IMEI number(s) | If available | Phone box, invoice, or your Google account device list |
The form also asks for the phone brand, model, price, where and when you lost it, and the police station and complaint number.
💡 Pro tip
Do this today, while your phone is still in your pocket: note your IMEI. It’s printed on the box and usually on the invoice, and Google’s Find Hub help points to android.com/find for looking it up. Save it in your email or as a photo of the box. Losing the phone is the worst time to start looking for it.
How to Block a Lost Phone on Sanchar Saathi, Step by Step
Once you have the duplicate SIM and the police complaint number:
- Go to sancharsaathi.gov.in or open the Sanchar Saathi app, and choose Block Your Lost / Stolen Mobile Handset.
- Tap “Block lost / stolen mobile handset”.
- Fill device details: lost mobile number(s), IMEI 1 and IMEI 2 if you have them, brand, model and price. Upload the invoice if you have it.
- Fill lost details: place, date, state, district, police station, complaint number, and upload the complaint copy.
- Fill owner details: name, address, and an identity document with its upload.
- Enter the OTP sent to your re-issued SIM, accept the declaration and submit.
- Save your request ID. You’ll need it to check status and to unblock the phone later.
The portal also has links to check your request status and to recover a forgotten request ID. If something goes wrong, the Sanchar Saathi helpdesk lists 011-20907480 (9 am to 5 pm, Monday to Friday) and help-sancharsaathi@gov.in.
Protect Your UPI, Bank and Accounts Too
A blocked handset can’t be used on Indian networks, but your accounts need their own protection. Your phone held your OTPs, UPI apps and email.
- Call your bank and ask them to block mobile banking or UPI on the lost device. Most UPI apps also need your UPI PIN, but don’t rely on that alone.
- Change your Google or Apple account password from another device, and sign the lost phone out of Gmail and WhatsApp where possible.
- Get WhatsApp back by registering your number on a new phone with the duplicate SIM. Our WhatsApp transfer guide covers restoring chats.
- If money is taken, call the cybercrime helpline 1930 immediately. Our guide on money missing from a bank account explains RBI’s liability rules and deadlines.
Passkeys and two-step login help a lot here. With them on, a thief with your phone still struggles to open your accounts. Read our passkeys guide to set them up on your next phone.
Also readMoney Missing From Bank Account? RBI’s 3-Day Rule Can Save You Found Your Phone? How to Unblock It
Good news happens. If police trace the phone or a kind stranger returns it, unblock it so it works again.
- Open Sanchar Saathi and choose Unblock found mobile handset.
- Choose Un-Blocking Request, then enter your request ID and the mobile number you gave while blocking.
- Pick a reason: recovered by police, found by self, blocked by mistake or other.
- Verify with OTP and submit.
Once unblocked, the phone works normally on Indian networks again. The same form also has an “Update Police Complaint” option, and it’s worth telling the police station that the phone is back.
Before you start using it, check it’s still yours in every way. Look for apps you didn’t install and run the checks in our is my phone hacked guide. A phone that spent days with a stranger deserves a quick look.
Our Verdict: Is Blocking Worth the Effort?
✅ Our verdict
Yes, every time. The police complaint and duplicate SIM feel like a hassle, but blocking the IMEI is the only step that makes the handset useless to a thief in India, and it gives the phone a real chance of being traced. Do Find Hub or Find My first, then the SIM, then CEIR, and protect your bank accounts in parallel.
If you’re buying a second-hand phone, the same system protects you too. Our used phone checklist shows how to check a phone’s IMEI on Sanchar Saathi before you pay.
Frequently Asked Questions
How do I block a lost phone in India?
Get a duplicate SIM for your lost number and file a police complaint. Then go to sancharsaathi.gov.in, choose “Block Your Lost / Stolen Mobile Handset”, fill the form with the complaint number and documents, and verify with the OTP on the duplicate SIM.
Can I block a lost phone without a police complaint?
The CEIR form lists a police report or FIR copy as a prerequisite and asks for the complaint number and upload, so you need one.
Can I block a phone without the IMEI number?
The form asks for IMEI “if available”, so you can still submit. Having it from the box or invoice makes the request more precise.
Will Sanchar Saathi find my phone?
Blocking makes the phone unusable on Indian networks and generates traceability if someone uses it. DoT’s dashboard shows 38.94 lakh phones traced out of 62.98 lakh blocked, so recovery isn’t guaranteed, but it does happen.
How do I unblock my phone after finding it?
Open Sanchar Saathi, choose “Unblock found mobile handset”, enter your request ID, the number you used while blocking and a reason, then verify with OTP.
The Bottom Line
You can block a lost phone across India in about ten minutes, once the duplicate SIM and police complaint are ready. The step you can do right now is the most useful one: write down your IMEI and turn on Find Hub or Find My today. Then share this checklist with the family WhatsApp group before the Diwali crowds.
Keep reading
Read nextIs My Phone Hacked? 9 Checks for Android and iPhone Users
Read nextWhat Are Passkeys? Set Them Up on Google, WhatsApp and Amazon
Read nextBuying a Used Phone? 7 Checks Before You Pay in IndiaSources
- Sanchar Saathi (DoT): lost/stolen phone facility, FAQ, blocked and traced counts, helpdesk
- CEIR blocking form: prerequisites and required fields
- Sanchar Saathi: block, unblock and request status links
- CEIR un-blocking form: request ID, reason and OTP
- Google Android Help: find, secure or erase a lost Android device (Find Hub)
- Apple Support: if your iPhone or iPad is lost or stolen