I have T mobile SIM card with number 904****. I have terminated the T mobile service few weeks back.
Now I have one number(609****) in AT&T network. I want to port that number into T mobile. But T mobile SIM kit is too costly 25$.
Instead off buying new SIM, can I use the T mobile SIM card which is not in service from above for porting my AT&T number into T mobile
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