My sister has been a Sprint customer for 14 years- She bought a 7plus 70 days ago when BB had a $300 gift card for the 256gb promo. Since I have Verizon and picked up her iphone - when I activated it I used my sim first.
Fast forward to last week she finally got tired of Sprints terrible service and ported over to T-Mobile under the carrier freedom promo. The T-Mobile sales guy kept telling her that her iPhone was locked to Sprint. My sister called me - the salesman then tried to tell me the difference between locked/unlocked until I said put a T-Mobile sim in it. Then he wanted to know how I knew to activate it first with my Verizon sim
My sister ended up paying 3 payments on her 7 plus total and really they paid her to take the phone when you factor in the $300 card she got
They always try to get you to buy a new phone from them.
They pull that with everyone, they wont even test out a sim.
They just flat out tell everyone their phone wont work.