Re: TMO ranked third or lower in JD Power rankings
That's not really a shock... T-Mobile's network is nowhere near the size and scope of either AT&T or Verizon... that's why they are trying to add towers like made and buy up whatever spectrum they can get their hands on. People in built-up, metro areas... TMO will be awesome. But if you are in the boondocks, well, there's a reason why T-Mobile has Wi-Fi Calling.
I have T-Mobile.... switched from Verizon... and I get a decent LTE signal pretty much everywhere I go in my everyday travels... but there are spots where coverage drops out. That rarely happened on Verizon... BUT... T-Mobile's saving me money and the Customer Service I've dealt with is AWESOME. Every time I've called, they've treated me like a valued customer and worked with me.... my dealings with Verizon were along the lines of "You should feel blessed that you are allowed to use our service". I'll take T-Mobile's customer experience and accept the (for me) occasional dead spots.
The first time I used JUMP... T-Mobile let me keep my old phone for a couple of weeks so I could make sure everything was transferred. When it came time to ship the old one back, I forgot to add on tracking (T-Mo paid for shipping... which didn't have any kind of tracking... that isn't the case anymore). Well, the package never arrived at the location and was 'lost'. Rather than give me a hard time, T-Mobile removed the phone from my account thanked me for my business.
I recently switched out my other line's phone... when I was in the store, the CS rep said "Hey.... if you switch over to the new 2-line unlimited plan... you'll get unlimited LTE on your second line (which was only on the base 1G of LTE/m) and it'll save $10 a month off your bill". Considering that T-Mobile doesn't do contracts, there was ZERO incentive to point that out other than to save me money and get me a better plan. In the near 15+ years I was a Verizon Wireless customer, nothing even remotely close to that occurred.
So going forward... I'm betting that T-Mobile improves their network a hell of a lot faster than Verizon Wireless improves their customer service.