NEED HELP galaxy s5 saying not registered on network

Where did the S5 come from in the first place? Have you checked that it is compatible with the carrier?

 

Yes the phone came from a friend who was running t mobile on it and the service I'm trying to run is powered by t mobile. If it wasn't compatible wouldn't it not even reconize the SIM? It don't tell me to unlock the phone or that the SIM is invalid it just says no service and when trying to place a call it says not registered on network

 

Bump

 

Sounds like the Sim has not been activated. When you check in settings-about phone, can you find you phone number listed and service active?

 

Yes the phone number is there but the service says unknown

 

The SIM came out of my old phone

 

What is the model of your old phone?

 

Also if you replace sim in old phone does everything work,voice and data's?

 

Yes everything works fine I have it in a LG Leon LTE

 

You may have to call the carrier and give them the IMEI # to get it activated.