Not registered on the network message on my phone occasionally.

hi wendy.
not sure if this is what you are after its all i could find,if this does not help you then go to the link at the bottom.
What to do when your phone says not registered on network? Make sure you are connected to a Wireless connection:

1. First Get Your Galaxy up and running, charged and ready.
2. Put the SIM card in phone.
3. Navigate to Settings of your Phone.
4. Scroll down to reach the extreme bottom.
5. Select Software Update.
6. Wait for it to reboot and complete the update.
7. Finished!

7 Ways To Fix Not Registered On Network on Android - Technobezz

https://www.technobezz.com/fix-samsung-galaxy-registered-network/ Search for: What to do when your phone says not registered on network?

message on my phone saying not registered on network Google Search

connect it to the network first

hi..........
switch off your phone, re-insert your sim card, switch on the phone.
go to settings, go to network selection option . now search for networks. select your network and thats it.
if the problem persist, contact your service provider.
thanks...........

If your phone pop up message saying "error: no phone number (or) Not registered on network" then your phone is probably network locked.

To unlock it,visit TheUnlockSpot.com here they are providing the unlock code at reasonable cost with easy step by step unlocking instructions and unlock it.Then you can use freely any GSM network sim card.

http://www.theunlockspot.com/supported-phones/rs10wp7/

First Option:
Phone in the Other Sim and check the Phone Network Signal If Network Signal Problem not Solved So
Secend Option:
Your Phone Network IC Fault So Please change Network IC
And Network Signal Problem will Solved
if it is there isn't much you can do on this side of the network.
Contact your phone company.

First Option:
Phone in the Other Sim and check the Phone Network Signal If Network Signal Problem not Solved So
Secend Option:
Your Phone Network IC Fault So Please change Network IC
And Network Signal Problem will Solved
if it is there isn't much you can do on this side of the network.
Contact your phone company.

contact customer care and you need 2 register

You can get samsung galaxy s unlock code from your network provider, just call your network customer service and make request about samsung unlock code. To doing that process you must have a good standing account with them otherwise you will not get that code. Other solution, you can buy unlock code from third party sites. I hope my solution can solve your problem.

Try to reset it to factory settings, if it does not help upgrade the firmware or if you recently upgraded the firmware downgrade it.