Last updated: March 2026 • Reviewed by Compare The Networks
If your Samsung Galaxy shows “Not Registered on Network” or has no signal, manually selecting a network can fix it.
Steps
- Go to Settings > Connections > Mobile Networks
- Tap Network Operators
- Toggle off Select automatically
- Wait for the phone to scan for available networks (10–30 seconds)
- Tap your network: EE, vodafone UK, O2 - UK, or 3 UK
- Wait for “Registered on network” to appear
If your network doesn’t appear, move to a different location and try again. You can also try switching to 4G for wider coverage.
Tip: If you see networks listed as numbers (e.g. 23410, 23415), here’s what they mean: 23410 = O2, 23415 = Vodafone, 23420 = Three, 23430 = EE.
Once connected, turn Select automatically back on so your phone can switch networks normally.