UPI mobile verification fails when the app cannot send its registration SMS from the same mobile number your bank has recorded for SMS or mobile alerts. The highest-probability fixes are to select the bank-linked SIM, restore outbound cellular SMS service, clear a messaging-app cache when the app recommends it, and stop retrying once the three-attempt daily limit is reached. If the number is correct and SMS works but the app still cannot find an account, the bank must confirm or correct the number linkage and UPI eligibility.
What UPI mobile verification is checking
During registration, a UPI app sends an SMS from your phone. NPCI’s UPI product booklet says mobile-banking registration is possible only when the number being registered is already recorded with the issuing bank for SMS or mobile alerts. The app then associates that verified number and the handset with the UPI registration. BHIM describes registration as complete after NPCI recognizes the mobile number and handset.
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That means Wi-Fi alone cannot complete this check. The outbound message must leave through the cellular network and the SIM that carries the bank-registered number. A phone can have internet access and still fail verification if SMS service is inactive, the wrong SIM is selected, or the bank has a different number on file.
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Find the failure you actually have
Use the wording on screen and the recent changes to choose the right branch. Fixing a bank-record mismatch will not repair a blocked SMS service, and buying a new phone will not correct either problem.
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| What you see | Most likely check | Who controls the fix |
|---|---|---|
| SMS could not be sent, SMS failed, or a network error | Correct SIM selected, cellular signal available, and outgoing SMS enabled | Phone settings, carrier, or UPI app |
| Dual-SIM phone verifies the other number | Set the SIM whose number is registered with the bank as the primary SMS SIM | Phone settings |
| No account found after verification | The verified number exactly matches the bank’s SMS/mobile-alert record | Bank, after you check the number |
| Verification stopped after repeated retries | Three-attempt limit in a 24-hour period | Wait for the window to expire, then retry once with the correct setup |
| Failure began after a new SIM, phone, or UPI app | UPI re-registration is required after those changes | UPI app and bank registration flow |
| Carrier changed but the mobile number stayed the same | Confirm the number and SMS service; a carrier change alone does not require new UPI setup | Phone, carrier, or bank only if records are wrong |
Fixes in the order that avoids wasted attempts
Do these checks in sequence. A verification SMS is an attempt, so do not repeatedly press retry while a basic setting is wrong.
1. Confirm the exact bank-registered number
Read the mobile number shown by the UPI app and compare it with the number your bank holds for SMS or mobile alerts. Compare every digit, including the country and local-number format displayed by the app. NPCI says that if the app verifies a different number, the bank account will not be fetched.
- If you recently changed numbers, update the mobile number with the bank first and wait until the bank confirms that SMS or mobile alerts use the new number.
- If you have more than one number in the phone, identify which physical SIM contains the number the bank has on record.
- Do not assume that receiving an occasional bank alert proves the UPI registration record is correct; ask the bank specifically whether the number is registered for SMS/mobile alerts and whether the account is enabled for UPI.
Do not proceed to repeated UPI retries until this comparison is clear. A successful SMS from an unlinked number can still leave the app with no account to display.
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Dual-SIM phones can route messages through the wrong line even when both SIMs have signal. Google Pay and BHIM instruct users to make the bank-linked SIM the primary SIM for SMS and to ensure that the verification message is sent from that SIM.
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- Open the phone’s SIM or mobile-network settings. The label varies by handset; look for SIMs, Mobile network, or SIM manager.
- Set the SIM carrying the bank-registered number as the default or primary SIM for SMS.
- If the messaging app asks which SIM to use, choose that same line rather than Ask every time.
- Return to the UPI app and begin registration again. Watch for the SIM indicator or confirmation that the message is being sent from the selected line.
If the phone keeps choosing the wrong line, temporarily disable the other SIM for the registration attempt, if your handset allows it. Re-enable it after setup. This is a routing diagnostic, not a requirement for every phone.
3. Verify that outbound cellular SMS works
UPI verification requires a message sent over the cellular network, not just an internet connection. Confirm that the selected SIM is active, shows service, and can send an ordinary SMS to a contact. If a normal message cannot leave the phone, the UPI message cannot leave it either.
- Check that the phone shows a cellular signal and that airplane mode is off.
- Send one ordinary SMS from the bank-linked SIM. If it remains pending or fails, contact the carrier or check the line’s SMS service before trying UPI again.
- Some account and bank instructions require an active outgoing-SMS pack during SIM binding. Indian Overseas Bank explicitly lists an active outgoing SMS pack as necessary; availability and requirements can vary by carrier and plan.
- Bank of Baroda lists inability to send SMS and phone network errors among causes of UPI registration failure.
Wi-Fi can remain on, but it cannot substitute for the cellular path used by the registration message. If service is intermittent, move to a location where the SIM has a stable signal and send the ordinary test SMS again before opening the UPI app.
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When Google Pay reports an SMS problem, its documented remedy includes clearing the messaging app’s cache. On most Android phones, open Settings, choose Apps or App management, select the default messaging app, open Storage, and tap Clear cache. Menu names differ by manufacturer; clear the cache, not stored messages or app data, unless you understand the consequences.
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Also inspect settings or installed utilities that can block outgoing messages. Call-blocking, SMS-filtering, parental-control, security, or enterprise-management software may interfere with a short-code or service message. Temporarily disabling a suspected blocker is a practical diagnostic; restore the protection after registration. Do not disable security controls permanently or grant a UPI app more access than the phone requests.
After changing a setting, close and reopen the UPI app, confirm the bank-linked SIM is still selected, and perform one controlled verification attempt. Repeating the same failed attempt without changing a condition only consumes the available window.
5. Respect the three-attempt limit
Google Pay’s NPCI guidance states that bank-account verification SMS is limited to three attempts within a 24-hour period. The limit applies to verification messages, not to how many times you can open the app or view an error.
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- After the third attempt, stop. Do not uninstall and reinstall the app in the hope of bypassing the limit.
- Wait until the 24-hour window has passed. The safest approach is to wait a full 24 hours from the first attempt rather than assuming the counter resets at midnight.
- Before trying again, repeat the number, SIM, cellular-SMS, and app-cache checks above.
If the app displays its own countdown or a different message, follow that on-screen instruction. The three-attempt figure is the limit described in Google Pay’s NPCI guidance; other apps may phrase the lockout differently.
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6. Re-register after a SIM, handset, or PSP-app change
NPCI states: “In case of change in sim/mobile/application of the PSP, customer would require to re-register themselves for UPI.” In practical terms, replacing the SIM, moving the number to a different phone, or changing the UPI provider application can invalidate the previous device association.
- Insert and activate the SIM whose number is registered with the bank.
- Put that SIM in the phone where you intend to use UPI and make it the primary SMS line.
- Install or open the UPI app and choose its registration or bank-account setup option rather than trying to reuse an old device session.
- Allow the app to send the verification SMS, then complete the bank-account and UPI setup prompts.
- If the app asks you to create or reset a UPI PIN, follow the bank’s identity checks; do not share the PIN or an OTP with anyone.
A carrier change by itself does not require a new UPI setup when the mobile number remains the same. You may still need to verify that the ported line can send SMS and that the bank continues to hold the same number.
7. Escalate a persistent “no account found” message to the bank
Once the correct SIM has sent a successful verification message, an account should be discoverable only when the bank’s record and the app’s verified number agree. If the app still says no account found, ask the bank to check two specific items:
- the exact mobile number is registered for SMS or mobile alerts on the relevant account; and
- the account is enabled for UPI and eligible to be returned to a UPI app.
Federal Bank documents the same mismatch behavior: an account may not appear when the mobile number used in the app differs from the number registered with the bank. Ask the bank to correct the record if necessary, then repeat registration after the bank confirms the change. The UPI app cannot repair a number stored incorrectly in the bank’s system.
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Choose the next action by symptom
| Symptom after the last change | Action now | Do not do |
|---|---|---|
| Normal SMS fails from the bank-linked SIM | Restore cellular service or outgoing SMS with the carrier; check any required SMS pack | Keep retrying UPI over Wi-Fi |
| Normal SMS works, but the UPI app uses the other SIM | Make the bank-linked line the default SMS SIM or temporarily disable the other line | Verify with whichever SIM the phone selects |
| Only the app reports SMS trouble | Clear the messaging-app cache, inspect SMS blockers, reopen the app, and retry once | Clear message data or uninstall without understanding what will be removed |
| Three attempts have already been used | Wait 24 hours from the first attempt, then retry with all checks complete | Use repeated reinstalls as a workaround |
| New SIM or new phone | Run the UPI registration flow again on the new device/SIM | Assume the old device association transfers automatically |
| Ported to another carrier with the same number | Test outgoing SMS and continue with the existing number if the bank record is unchanged | Change the bank number merely because the carrier changed |
| Verification succeeds but no bank account appears | Have the bank confirm number linkage and UPI enablement | Open accounts or change SIMs at random |
Special cases that commonly cause confusion
The app has internet, but SMS still fails
UPI apps use internet data for their interface, but the registration check uses an outbound SMS from the cellular line. A working Wi-Fi connection therefore does not prove that the required message can be sent. Test a standard SMS from the selected SIM and resolve that failure first.
The bank sends alerts, but the account is still missing
Receiving an alert is useful evidence that a number is associated with some bank communication, but it does not identify which account is enabled for UPI or whether the app verified the same number. Ask the bank to confirm the exact number on the account you are trying to register and its UPI status.
The SIM was replaced with the same number
A replacement SIM can retain the number while changing the handset’s SIM identity. NPCI’s instruction still requires UPI re-registration after a SIM change. Complete the registration flow again rather than waiting for the old device association to return.
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The phone was changed but the SIM was not
The number may be unchanged, yet the handset association is new. Install the UPI app on the new phone, select the bank-linked SIM for SMS, and register again. If the app imposes a waiting period after failed attempts, honor it before trying.
What not to buy as a “fix”
There is no universal hardware purchase that repairs UPI mobile verification. A new phone, signal booster, USB modem, or generic recharge is not a guaranteed solution. A replacement SIM is relevant only when the carrier or bank says the existing SIM is damaged, inactive, or unable to send SMS. First identify whether the failure belongs to the phone’s SIM routing, cellular SMS service, the app’s local settings, the attempt limit, or the bank’s account record.
Security while troubleshooting
- Use only the official UPI app installed from your phone’s recognized app store.
- Never disclose a UPI PIN, one-time password, card PIN, or full banking credentials to a caller claiming to “activate” verification.
- Do not install a remote-control app because someone promises to fix the SMS error.
- When contacting the bank or carrier, use the number printed on an official statement, card, or the institution’s verified app.
When the problem is resolved
Registration is complete when the app recognizes the bank-linked number and handset and displays the eligible account. Keep the successful SIM in the phone, leave it enabled for SMS, and record which number is linked to the account. If you later replace the SIM, phone, or UPI provider app, expect to repeat registration rather than treating the old setup as transferable.
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