BT Mobile Internet Not Working Fix Guide

This checklist works through the most common causes in order of likelihood, starting with the fastest checks. Most EE-network data faults clear up in step 1 or 2 — the later steps cover the less common cases.

BT Mobile does not operate its own mobile masts in the UK — it buys wholesale network access from one of the major UK operators. If the steps below don't resolve the issue, it's worth checking whether the underlying host network is reporting a wider outage.

Step 1: Check for BT Mobile Network Outage

Before changing any settings, check whether BT Mobile is experiencing a network outage in your area. An outage is the most common reason for sudden mobile data loss across an area.

If there is a confirmed outage in your area, no settings changes will help — wait for BT Mobile to restore the network and check the status page for estimated recovery time. You can also check Downdetector for user-reported issues.

Step 2 — Quick BT Mobile Fixes to Try First

Five quick checks resolve most BT Mobile data faults in under two minutes — work through them in order rather than skipping ahead.

1. A 30-second Aeroplane Mode toggle forces the phone to drop and re-register, clearing most temporary faults.
2. A complete power-off (not a screen lock) clears the network stack and reloads the APN from scratch.
3. Confirm Mobile Data is actually on — check Settings › Mobile Data (iPhone) or Settings › Connections › Mobile Data (Android); it's easy to knock this off by accident.
4. Check your remaining allowance in My BT — a used-up data allowance is throttled or cut off entirely, and it's often mistaken for a network fault.
5. Power off, then remove and refit the SIM — a loose contact causes intermittent, hard-to-diagnose drops.

Step 3: Verify BT Mobile APN Settings

An incorrect APN is a frequent cause of data failure — it commonly happens after a factory reset, an OS update, a SIM swap, or moving from a different network. Check and re-enter it if needed.

How to check APN settings on Android

1. Open Settings › Connections › Mobile Networks › Access Point Names (Samsung) or Settings › Network & internet › Mobile network › Access point names (Pixel).
2. Find the BT Mobile APN entry, tap it, and confirm the field reads exactly btmobile.bt.com — no stray spaces or extra characters.
3. Confirm APN Type has at least default and supl included.
4. If there's no BT Mobile APN, or the values look wrong, the full BT Mobile APN settings guide has everything you need.
5. Save, tap the radio button to activate the profile, then restart your phone.

How to check on iPhone

1. Go to Settings › Mobile Data › Mobile Data Network (if it's shown).
2. Confirm the APN field shows btmobile.bt.com.
3. Greyed out means it's controlled by the carrier bundle — check Settings › General › About for a carrier settings update.

Step 4 — More Advanced BT Mobile Fixes

1. First, try a different SIM in your phone — if another SIM connects fine, the fault sits with your BT Mobile SIM or account rather than the handset.
2. Testing the SIM in another phone shows if data works there, pointing to a software or hardware issue with the original device.
3. Reset network settings: Android — open APN settings, tap ⋮ › Reset to Default. iPhone — Settings › General › Transfer or Reset iPhone › Reset › Reset Network Settings. This also clears saved Wi-Fi passwords, so note them down first.
4. iPhone: check Settings › General › About for a carrier update, installing and restarting if one appears.
5. An outdated OS can interfere with network registration — check Settings › System › Software Update for updates.
6. If nothing above works, a free SIM replacement rules out physical degradation over time.
7. Call BT Mobile support on 0800 800 150 or 150 (free from BT Mobile) if you're still stuck — they can check account status and whether there's a known issue with the mast nearest you.

Common Causes of BT Mobile Data Not Working

Frequently Asked Questions — BT Mobile Internet Not Working

← Back to BT Mobile APN Settings