I had poor signal at my house with sprint, they gave me a magic box (booster) and still had issues so I allowed them to talk me into switching to Tmobile sim card. Tmobile tower is twice as far as the nearest Sprint tower. Terrible signal, jitter as high as 875 ms, signal is ~ -120 dBm. No one from Tmobile will talk to me, Sprint has limited access to Tmobile networks and systems and can’t help. I need a Tmobile booster, but because I still have a Sprint account I am stuck!! I don’t care if I switch accounts to Tmobile, but I’m not able to pay off the phone. I need to switch with everything the same or better and for them to give me a booster please!!!? With Sprint I had a booster, now I’m on a tower twice as far and it’s terrible signal at my house. Sprint customer care is unable to do anything but write tickets that go off and get closed out or no follow thru. Also, my text to emails are now all messed up and again, Tmobile refuses to talk to me and Sprint unable to help. Literally in last month, over 40 hrs on phone and chatting. Been a nightmare.
If you still have Sprint Sim Card, I would wait as long as possible to switch over.