Seeing the error “Phone not registered on network” can be frustrating—especially when you suddenly can’t make calls, send texts, or use mobile data. This issue usually points to a problem with your SIM card, network settings, or carrier registration, and the good news is that it’s often fixable without professional help.
Here’s a complete guide to understanding the problem and fixing it step by step.
What Does “Phone Not Registered on Network” Mean?
This error means your phone is unable to connect to your mobile carrier’s network. As a result:
- Calls fail
- Text messages won’t send
- Mobile data doesn’t work
The phone detects a SIM card, but the carrier does not recognize or authenticate the device properly.
Common Causes
- SIM card not activated or damaged
- Temporary network outage
- Incorrect network mode or carrier settings
- Software bugs or outdated firmware
- Phone blocked due to IMEI issues
- Roaming or region compatibility problems
Step‑by‑Step Fixes to Try First
1. Restart Your Phone
A simple reboot can refresh network registration.
What to do:
- Power off your phone
- Wait 30 seconds
- Turn it back on
2. Turn Airplane Mode On and Off
This forces your phone to reconnect to the network.
Steps:
- Enable Airplane Mode
- Wait 30 seconds
- Disable Airplane Mode
3. Check Your SIM Card
A loose or damaged SIM can cause registration errors.
Try this:
- Power off your phone
- Remove the SIM card
- Clean it gently
- Reinsert it firmly
- Turn your phone back on
If possible, test the SIM in another phone.
4. Select Network Manually
Automatic network selection can fail.
On Android:
- Go to Settings → Mobile Networks
- Tap Network Operators
- Disable automatic selection
- Choose your carrier manually
5. Change Network Mode
Your phone may be stuck on an unsupported network type.
Try switching between:
- 5G / 4G / 3G (Auto)
- LTE/3G/2G
This option is usually under Settings → Mobile Networks.
6. Reset Network Settings
This clears corrupted network configurations.
Note: This will erase Wi‑Fi and Bluetooth settings.
Steps:
- Go to Settings
- Tap Reset options
- Choose Reset network settings
Advanced Fixes
7. Update Your Phone Software
Outdated firmware can cause carrier compatibility issues.
- Go to Settings → Software Update
- Install any available updates
8. Check APN Settings
Incorrect Access Point Name (APN) settings can block network access.
- Reset APN settings to default
- Or manually enter APN details provided by your carrier
9. Check Your IMEI Status
If your IMEI is blocked, your phone won’t register.
How to check:
- Dial *#06# to view your IMEI
- Contact your carrier to confirm it’s not blacklisted
This can happen with unpaid bills, reported theft, or region restrictions.
10. Try Another SIM or Carrier
If another SIM works:
- Your original SIM may be faulty or deactivated
If no SIM works:
- The phone’s antenna or hardware may be damaged
When to Contact Your Carrier
Reach out to your carrier if:
- Your SIM is new and not activated
- The issue started after switching carriers
- You recently traveled internationally
- Your IMEI may be blocked
They can re‑register your device on the network or issue a replacement SIM.
Final Thoughts
The “Phone not registered on network” error is usually caused by SIM, network, or settings issues—and most of the time, it can be fixed in minutes. Start with simple steps like restarting and checking your SIM, then move on to manual network selection and resets if needed.
If none of the fixes work, your carrier is the best next step. With the right approach, you’ll be back on the network—and making calls again—quickly.
