Reliable depends on where you are parked.. I mean no company has 100% coverage. Not Verizon, Not T-mobile, not AT&T not ______ nobody. But put 'em all together and things work fairly well.
Now I'm a long time T-Mobile subscriber 55+ plan for 92/month (i think I'm still paying for the phone) including Taxes I get:
All the talk I can talk
All the text I can text
All the data I can eat with an * you know that dreaded *
The first so many Gigs are full speed 4Glte both for the phone and for linked devices (hotspot data).. after the hotspot cut off hotspot data is throttled.
And when the phone hits the "Total data" limit.. Well... then I get my vector lowered. that means if the tower is busy... it slows down
Do I notice.. NO but I do not often stream video. (I think the last time I streamed more than a couple minutes was in Jan when I Streamed one hour... I'd been notified I'd be named during the broadcast and I was (Nice thing) so I streamed it and logged into the live chat room. I really needed that new radio too (I won the monthly prize).