Banking & Finance

Union Bank Mobile Banking Not Working? Fix Vyom App Login & OTP Errors (2026)

Union Bank of India Vyom app or mobile banking not working today? Fix login failed, OTP not received, black screen and payment errors โ€” step-by-step. Customer care: 1800-222-244.

CitizenNest Editorial Team7 min read
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Disclaimer: This is an independent informational guide. We are NOT affiliated with any government body. Always verify on official websites.

Union Bank Mobile Banking (Vyom) Not Working? (2026 Fix)

Vyom is Union Bank of India's official mobile banking app โ€” launched after the merger of Andhra Bank and Corporation Bank into Union Bank. If Vyom app is not opening, login is failing, or OTP not coming โ€” this guide walks you through the fixes.

Quick check: Call 1800-222-244 (toll-free) or check @UnionBankTweets on Twitter/X to see if there's a known outage.


Common Vyom App Issues

Issue Likely Cause
Login failed Wrong MPIN; account locked
OTP not received Network issue; registered number inactive
Black screen / app not loading Cache issue; old app version
"Service unavailable" error Server maintenance or outage
Transaction declined Wrong UPI PIN; limit exceeded
Biometric not working OS update; permission revoked
App crash Outdated version; device incompatibility

Fixes โ€” Try in Order

Fix 1: Check Union Bank Server Status

  • Call 1800-222-244 โ€” automated line confirms outages
  • Search Twitter/X: @UnionBankTweets or "Vyom app down"
  • Check downdetector.in โ†’ "Union Bank of India"
  • If outage confirmed, wait 15โ€“30 minutes and retry

Fix 2: Update Vyom App

  1. Open Google Play Store or App Store
  2. Search "Vyom - Union Bank of India"
  3. Tap Update if available
  4. Relaunch after updating

Union Bank periodically rolls out mandatory security updates. Old Vyom versions will block login.

Fix 3: Clear App Cache (Android)

  1. Settings โ†’ Apps โ†’ Vyom Union Bank
  2. Tap Storage โ†’ Clear Cache
  3. Do NOT clear app data (you'll lose login credentials)
  4. Reopen Vyom

On iPhone: Uninstall and reinstall Vyom from the App Store.

Fix 4: OTP Not Received

  • Ensure your registered mobile number is active with SMS
  • Disable DND mode temporarily
  • Check if SMS inbox is full โ€” delete old messages
  • Wait 3โ€“5 minutes for delayed OTP
  • If number has changed: visit Union Bank branch to update before attempting login

Fix 5: Reset MPIN

Forgot MPIN:

  1. On Vyom login screen โ†’ "Forgot MPIN"
  2. Enter Debit Card number + ATM PIN (or card expiry + CVV)
  3. Enter OTP sent to registered mobile
  4. Set new 6-digit MPIN

Via Internet Banking:

  1. Login at unionbankonline.co.in
  2. Service Request โ†’ Mobile Banking โ†’ Reset MPIN

Fix 6: Re-register Biometric

  1. Open Vyom โ†’ Settings โ†’ Security
  2. Disable fingerprint/Face ID login
  3. Login with MPIN once
  4. Re-enable biometric and scan fingerprint again

Fix 7: Switch Network

  • Turn off Wi-Fi โ†’ use 4G mobile data
  • Disable VPN before opening Vyom
  • If on office network: switch to personal mobile hotspot

Fix 8: Reinstall Vyom

  1. Uninstall Vyom app completely
  2. Restart device
  3. Reinstall from Play Store / App Store
  4. Re-register: Customer ID โ†’ OTP โ†’ Debit Card โ†’ new MPIN

Vyom vs Union Bank Net Banking

Feature Vyom App Union Bank NetBanking
Fund transfers โœ… โœ…
UPI via app โœ… Limited
FD/RD management โœ… โœ…
When app is down โŒ โœ… โ†’ unionbankonline.co.in
Balance check without internet SMS: 09223008586 No

Frequently Asked Questions

Why does Vyom app say "Invalid Customer ID"?

Your Customer ID (CIF number) is different from your account number. Find it on your passbook, welcome letter, or bank statement โ€” it's typically 7โ€“10 digits. Not the account number.

Vyom app is stuck on loading screen โ€” how to fix?

  1. Force-close the app
  2. Clear cache (Settings โ†’ Apps โ†’ Vyom โ†’ Storage โ†’ Clear Cache)
  3. Switch from Wi-Fi to mobile data
  4. Reopen Vyom
  5. If still stuck: update/reinstall

My Union Bank transaction failed โ€” money deducted but not credited?

Wait 30 minutes โ€” most failed UPI/NEFT transactions auto-reverse. If not reversed in 3 working days: call 1800-222-244 with transaction ID, date, and amount.

Union Bank helpline

Method Contact
Toll-free 24ร—7 1800-222-244
Alternate toll-free 1800-208-2244
SMS balance check SMS "BAL" to 09223008586
Email customercare@unionbankofindia.com
Branch Visit nearest Union Bank branch