No Signal on Lumia 950 XL inside buildings - T-Mobile

[Robert Digilio]

So over the past few days I have noticed that I get no signal inside quite a few buildings. I was in a Red Robin's last night and a Target earlier today and I had 0 signal. I don't think it's T-Mobile since a buddy of mine who was sitting right next to me also has them and his signal was fine. Anyone else have a problem with the signal strength greatly dropping once they are inside a building?

 

[agentcyan]

Yeah, i get really bad signal as well for T-Mobile

 

[midnightfrolic]

I experience similar issues. Next time, try asking your friend to test SIMs in each other's phones to test out cell reception. See if it's the phone, SIM, or luck of the draw.