I have lost my Samsung Galaxy j7 prime plz I want My phone back. Plz find my phone

You must contact your Service Provider and notify them of the loss. You are responsible for any costs the thief or finder is using until the moment you tell them it's missing.

With some luck, they might be able to tell you the location of the 'phone when it was last used. I've edited the IMEI number out of your post because it's personal information.