What Tesco Mobile APN settings do and when you need them
Several things stop Tesco Mobile data, calls or texts: a bad APN, an area outage, a loose SIM, or a software glitch.
Troubleshooting checklist
Try these in sequence — most cases resolve by the second one
Correct Tesco Mobile APN values for internet and MMS
Rule out a Tesco Mobile outage first via the hub or Downdetector; settings changes won't help while the network is down.
Troubleshooting checklist
Go in sequence; the first two steps usually do it
How to enter Tesco Mobile APN on Android and iPhone
Toggle Aeroplane Mode from the notification shade for ten seconds — the phone drops and rebuilds its Tesco Mobile connection.
Troubleshooting checklist
Follow the order — most cases resolve by the second step
What to do if Tesco Mobile APN does not save
A proper restart flushes the modem cache and forces Tesco Mobile re-registration, fixing what aeroplane mode won't.
Troubleshooting checklist
Take them in turn, since step one or two normally fixes it
Step 4 — Re-seat the SIM on Tesco Mobile when resetting APN
Power down, pop the SIM tray with the tool or a paperclip, inspect and clean the contacts, then reinsert the Tesco Mobile SIM securely.
Troubleshooting checklist
In order, please — most people are done by step two
Step 5 — Check Tesco Mobile's APN settings when resetting APN
| Setting | Value |
|---|---|
| APN Name | prepaydata |
| Username | (leave blank) |
| Password | (leave blank) |
| MMSC | http://mmsc.mms.o2.co.uk:8002 |
| MMS Proxy | 82.132.254.1 |
| MMS Port | 8080 |
| Authentication Type | PAP |
| APN Type | default,supl,mms |
Signal showing but no data usually means the APN needs checking — see Settings → Mobile Network → Access Point Names.
Troubleshooting checklist
Sequential order works best; step two usually settles it
Step 6 — Reset Tesco Mobile's network settings when resetting APN
On Android, reset network settings to restore Tesco Mobile defaults — saved Wi-Fi and Bluetooth go, apps and data stay.
On iOS, reset network settings via Settings → General → Transfer or Reset iPhone; Tesco Mobile's defaults are restored.
Troubleshooting checklist
Work down the list — the second step is usually enough
Step 7 — Contact Tesco Mobile support when resetting APN
If nothing works, contact Tesco Mobile. Bring your account number and IMEI; it may be an account, SIM or network-side problem.
Troubleshooting checklist
These run in order, and most people stop at step two