How to get back my phone number using number listed behind sim card

[jujujuju50]

I believe my husband is hiding a secret phone which he is using to cheat on me. I am 4months pregnant and would just like to knw for sure. He tends to be very violent when questioned but I found a tmobile card with the actuall sim card removed. I have the actual sim card number and would like to know if I would be able to get the phone number for it

 

[hang-the-9]

Contact TMobile.

 

[ansari00990099]

This is my mobile number * moderator edit for personal info * I want me Dail receive number

 

[tech-wreck]

if the sim card is not registered, you register it yourself and then you will be able to find out what numbers have been called and when, by contacting t mobile customer service.
I hope you're just being paranoid though and he is not cheating. good luck