My port-in was blocked
Last updated: April 3, 2026
If your number transfer was blocked before it started — or you received a rejection immediately after submitting — the most common cause is a mismatch in the details provided.
Common reasons a port is blocked
- Incorrect porting credentials — account number, PIN, billing zip code, or PAC code (UK) don't match your carrier's records exactly
- Account lock or port freeze — some carriers let customers lock their number to prevent transfers; this needs to be turned off before porting
- Recent account changes — if you recently changed your PIN or account details with your old carrier, the old details may have been submitted
What to do
- Contact your current carrier and confirm the exact account number and PIN (or request your PAC code if in the UK)
- Ask your carrier if a port freeze or account lock is active and remove it
- Resubmit the port request with the corrected details through the app
Do not cancel your old plan until the port completes. Cancelling early can make the number unrecoverable.
This article doesn't cover:
Port declined after submission →My port-in was declined
Port delayed after submission →My port-in is delayed or stuck
Port failed →My port-in failed — what do I do?