SIM card stopped working: swap, KYC and recovery

A sudden “No service,” “SIM not provisioned” or “Emergency calls only” message can be a handset fault, damaged SIM, network outage, inactive plan, operator restriction, porting event or unauthorised SIM replacement. Treat it as a security incident when the loss of service is unexpected and banking, email or messaging accounts use that number.

Searches for SIM card stopped working all of a sudden, how to recover from SIM swap and what to do after SIM swap should not start with a random “KYC reactivation” link. The first job is diagnosis; the second is a parallel operator block and account lockdown. Prompt reporting helps tracing and customer-liability review. No channel can promise a percentage recovery.

Do not wait for a financial loss before contacting the operator when an unauthorised replacement or port is suspected.

Identify the cause before you pick the recovery path. These eight patterns cover most 2026 cases:

1. SIM-swap / duplicate SIM. Someone obtained a replacement SIM or eSIM for your number. Your chip goes dead; OTPs land elsewhere. This is the highest-risk pattern for banking.
2. Port-out (MNP hijack). A Unique Porting Code was generated and the number left your operator without your informed request. TRAI's current MNP FAQ says a UPC cannot be generated until seven days after a SIM swap or replacement — a safeguard, not a guarantee.
3. KYC / re-verification block. The operator suspended the SIM after a mismatch, expired verification, a government direction, or a connection flagged in Sanchar Saathi. There may be no fraud, only an SMS asking you to complete official e-KYC or Digital KYC.
4. eSIM profile move. An eSIM QR or operator app activation transferred the number to another device. The physical SIM may show signal for a few minutes, then die.
5. Damaged, expired or recycled SIM. Old chips fail; unused numbers can be withdrawn under the operator's published inactive-number rules. Confirm with the operator before assuming fraud.
6. Handset IMEI block. If the phone was reported lost on CEIR, the device — not merely the SIM — may be barred. See the CEIR steps below.
7. Aadhaar / linked-number mismatch. The SIM still shows bars, but OTPs for banks, IT, EPFO or DigiLocker fail because those services still hold an old or recycled number. That is an account-hygiene problem, not a dead chip.
8. Network outage or APN/roaming fault. Neighbours on the same operator also have no service, or a simple APN reset restores data.

Call your own number from another phone. If it rings on a stranger's device, treat it as swap or port until the operator proves otherwise.

Use a trusted second device and work in parallel where possible. This is the how to recover from SIM swap order:

1. call or visit the telecom operator through an official channel (published helpline, app or store you reached independently — Jio/Vi short code 199, Airtel 121, BSNL 1503 from that operator's own SIM, or the current toll-free number on the operator's website);
2. ask whether a SIM replacement, eSIM activation, ownership change or port was processed;
3. request a block on the unauthorised active SIM and a complaint or ticket number;
4. secure the primary email account first, then banking, UPI, wallets and messaging;
5. remove unknown recovery methods and sign out unrecognised sessions;
6. notify the bank through its official fraud channel if an account uses that number;
7. call 1930 and file at NCRP if an unauthorised financial transaction occurred;
8. preserve all SMS, email, operator tickets, bank references and device screenshots.

Never give an OTP, UPI PIN, card PIN, CVV or screen-sharing access to a caller offering to “restore network.” For the 1930 call itself use the 1930 reporting script.

Print or screenshot this. Times overlap on purpose.

1. Restart. Remove the SIM, wipe the contacts, reinsert.
2. Test the SIM in a second compatible phone.
3. Call your number from another phone. Note whether it rings, says “not in service”, or is answered elsewhere.
4. Screenshot the “No service” / “SIM not provisioned” screen with the clock visible.

1. From another device, use the operator's official helpline, app or store. Identify yourself with the alternate number, registered email, date of birth and a recent recharge or bill fact the operator actually asks for — not a script a stranger sent you.
2. Ask for immediate SIM / eSIM block and, if you are the subscriber, re-issue only with e-KYC or Digital KYC.
3. Get the ticket / SR number by SMS or email. Operators must acknowledge a complaint under TRAI's consumer-complaint framework.
4. Ask whether a port request or UPC was generated.

1. Call the bank's anti-fraud number on the back of the card. State SIM compromise, time of service loss, and any debit you can see. Ask it to block cards, net-banking and UPI on that mobile.
2. From another device, disable UPI IDs and auto-pay mandates. See UPI autopay mandate fraud.
3. If Aadhaar-enabled withdrawals are a risk, lock biometrics through UIDAI's official flow and read AePS fraud response.
4. Email every bank and broker a one-line freeze request with the operator ticket.

1. Dial 1930 if money moved. Note the acknowledgement.
2. File the same facts at cybercrime.gov.in. Track later via cybercrime complaint status.
3. Run the Sanchar Saathi connection check using the steps in the next section — do not skip to a copied TAFCOP domain.

No page can honestly quote an “80 per cent recovery if you finish in 30 minutes” figure. Speed still matters for tracing.

Department of Telecommunications instructions require e-KYC or Digital KYC for SIM swap and replacement. The Telecommunications (Telecom Cyber Security) Rules, 2025 also provide for identity re-verification through e-KYC or Digital KYC in specified situations including replacement, upgradation, mobile-number portability or a government direction.

Use an operator store, app, website or authorised process that you reached independently. Ask for:

• reason for the restriction or replacement;
• date, time and channel of any prior swap request;
• identity-verification method used;
• complaint number and expected service status;
• confirmation that the unauthorised SIM or eSIM profile is disabled;
• a record of the new replacement issued to you.

Do not send identity documents to a personal messaging number or pay a private “KYC reactivation” link.

The citizen connection-check lives on Sanchar Saathi. The dedicated money/identity-audit page on this wiki is Check SIM misuse on TAFCOP / Sanchar Saathi — use that page for login choices, reporting options, status and follow-up. This section is only the order of steps so a dead-SIM emergency does not skip the audit.

1. Open Sanchar Saathi from a clean device at sancharsaathi.gov.in. Do not use a forwarded short link.
2. Choose the official connection-check / TAFCOP service the portal currently exposes.
3. Authenticate with a number that still receives OTP, or the alternate method the portal offers (including DigiLocker where available).
4. Review every connection shown against your identity. Screenshot the list with the date visible. Mask the full numbers before you share the image outside official reporting.
5. Flag any number you do not recognise through the portal's own “not my number” / report flow. Note the acknowledgement ID.
6. If your expected number is missing, tell the operator — it may have been ported, swapped or recycled.
7. Follow the rest of the portal flow, grievance and status steps on the TAFCOP identity-audit guide. Do not copy that page's screens or fee/product detail here.

An unfamiliar number in the list does not itself prove who used it. Do not post the full number or your identity details publicly.

Searches for CEIR block stolen phone, CEIR portal block phone and CEIR IMEI block are about the handset, not the SIM. Use CEIR on Sanchar Saathi when the physical device is lost or stolen and its IMEI needs to be blocked.

1. Find both IMEIs (printed under the battery on older phones, or in Settings → About, or on the box/bill). Dual-SIM devices have two.
2. Open the official CEIR service. Choose the current block lost/stolen mobile option.
3. Complete the identity and IMEI fields the form actually shows. Upload the purchase bill and police complaint if the form asks for them — do not invent extra attachments.
4. Save the request / acknowledgement ID.
5. CEIR blocking the IMEI does not replace: operator SIM/eSIM block, number recovery, bank lockdown, or a 1930/NCRP report.

If the phone remains with you and only the SIM stopped working, do not file a false lost-handset report. For a genuinely lost SIM+phone, also see block a lost or stolen SIM.

TRAI's current mobile-number-portability FAQ says a Unique Porting Code cannot be generated until seven days have elapsed after a SIM swap or replacement. This is a safeguard relevant to a recent replacement, not a guarantee that every takeover will be prevented.

Ask the operator whether a port request or UPC was generated and preserve the answer. Cancel or contest an unauthorised request through the official operator process.

Keep a dated folder (name it with the incident date). Prefix files with date and time.

• screenshot of the dead-SIM screen with clock visible;
• operator ticket / SR number, call time, channel;
• result of calling your own number from another phone;
• Sanchar Saathi / TAFCOP acknowledgement ID (see the dedicated guide);
• CEIR request ID if the handset was lost;
• 1930 and NCRP acknowledgements;
• bank SMS, UPI notifications and a statement PDF downloaded on another device;
• Aadhaar biometric-lock confirmation if you used that flow;
• emails to bank, operator, broker, EPFO, NPS, DigiLocker.

Without a timeline, the bank and the operator will bounce you between “customer negligence” and “wait for investigation”.

Contact the bank first through a verified fraud channel, then call 1930 and complete the NCRP complaint. Provide transaction IDs, time, amount, beneficiary, operator ticket and the timeline of service loss. Use the SIM-swap fraud guide, the 1930 reporting script, the payment-fraud sequence, cybercrime-linked freeze and UPI recovery.

RBI's customer-liability circular (DBR.No.Leg.BC.78/2017-18) uses reporting clocks for unauthorised electronic transactions. Citing it is useful; treating “zero liability” as automatic is not. The bank will still examine the trail, your delay and any OTP you shared. If the bank's reply is unsatisfactory, the next eligible step is RB-IOS / CMS.

Do not pay a person who claims to retrieve funds from a “cyber account.”

To: Nodal Officer / Appellate Authority, [Operator], [Circle]
Subject: Unauthorised SIM replacement / port on [number] on [date time]
       — request block, KYC explanation and restoration

I am the registered subscriber of mobile [number] since [year].
On [date] at about [time] the SIM showed "No service / SIM not provisioned".
I called your helpline / visited [channel] at [time] from alternate number
[number] and was issued ticket [SR]. I requested an immediate block of any
unauthorised SIM/eSIM and re-issue only through official e-KYC / Digital KYC.

I have also reported:
- 1930 acknowledgement [id] (if money moved)
- NCRP cybercrime.gov.in acknowledgement [id]
- Sanchar Saathi connection-check acknowledgement [id]
- Bank fraud desk acknowledgement [id]

Please confirm in writing:
(a) whether a SIM replacement, eSIM activation or port/UPC was processed,
    with date, time, channel and retailer/store code if any;
(b) the identity-verification method used for that event;
(c) that the unauthorised SIM/eSIM is disabled;
(d) the expected date for restoration on a SIM issued to me.

I have not included OTPs, passwords or full identity numbers in this email.

If the helpline stalls, use the operator's published appellate-authority email on its official website (state-wise pages change — copy from there, not from an old blog). If that fails, file a grievance through CPGRAMS naming the Department of Telecommunications and quoting the operator ticket.

Do not wait for a friend to appear. From any borrowed phone: dial the operator's published toll-free number (not a number a caller just gave you), visit the home store with your identity proof, or use the operator's official website from another device's browser. Tell the agent the SIM in your hand is dead and you need a ticket before any re-issue. Banks can often take a freeze request from a card-back number even when the registered mobile is dead. Email from a previously used address is better than silence.

Once a ticket exists, borrow a number only for the Sanchar Saathi OTP if the portal allows an alternate retrieval — then follow the TAFCOP identity-audit rather than creating a new connection in someone else's name.

• change passwords again from a clean device;
• review recovery email, phone and authenticator settings;
• check bank, card, UPI and wallet activity for the full incident period;
• revoke unrecognised app sessions and device access;
• obtain the operator's written closure or replacement record;
• keep the original SIM, ticket, KYC receipt and complaint evidence;
• watch for identity misuse or new connections through Sanchar Saathi;
• update the mobile number separately at every bank, broker, EPFO, NPS, Income Tax, DigiLocker, Passport Seva and vehicle record that still holds the old number — a recycled SIM can otherwise keep receiving OTPs.

If the operator refuses to explain or correct a documented service failure, use its appellate grievance process (the appellate-authority email on the current operator website, then CPGRAMS to DoT). TRAI sets regulatory frameworks but does not function as the first individual customer complaint desk.

No. It can result from a network, handset, validity or SIM fault. An unexplained replacement, port, account alert or new-device activity makes a takeover more likely.

Not when the stop is unexpected and the number protects financial or email accounts. Use another trusted device and ask the operator to check replacement, eSIM and port records.

Current DoT instructions require e-KYC or Digital KYC for swap or replacement. Ask how the transaction was verified if you did not authorise it.

The citizen connection-check function is available through Sanchar Saathi. Use the current official portal rather than an old or copied domain, and follow the TAFCOP walkthrough for the full identity-audit.

CEIR is principally the handset-IMEI blocking route for a lost or stolen device. Contact the operator to block and replace the SIM or eSIM.

TRAI's FAQ says a UPC cannot be generated until seven days after SIM swap or replacement. Check current operator and TRAI instructions for the exact request.

That can be a separate identity-protection choice where Aadhaar misuse is suspected, but it does not block a telecom SIM, reverse a port or replace the operator complaint process.

No. It creates an official rapid-reporting route for financial cyber fraud. Recovery depends on the transaction trail, timing, available funds, investigation and bank process.

• Check connections in your name (TAFCOP)
• SIM-swap fraud recovery
• Block a lost or stolen SIM
• 1930 reporting script
• Online payment fraud response
• Cybercrime-linked bank freeze
• Aadhaar-enabled payment fraud response
• Report a scam call
• Cybercrime complaint
• Cybercrime complaint status
• UPI fraud recovery
• CPGRAMS grievance

• Department of Telecommunications SIM swap and replacement instructions
• Telecommunications (Telecom Cyber Security) Rules, 2025
• Sanchar Saathi official portal
• CEIR official portal
• TRAI mobile-number-portability FAQ
• NCRP cybercrime-category descriptions, including SIM-swap scam