My iPhone credit keeps disappearing?

:) yo

New member
So, I had my iphone working for ages on prepaid. Then one day I had about $20 and it just disappeared. So I got another $30 dollars more. The next day it was all gone. Then I rang the Testra man and he gave me back $30 and then it slowly starting disappearing too. So I put my sim back in my old samsung. I've been using that for months. I reckon it takes my credit because i'm logged onto the internet. Even though i'm using WiFi? If that's the problem how do I get myself off the other internet and only allow my iPhone too connect to my free WiFi? Thank you!
 
Back
Top