[HTC U11  Questions & Answers] QD2DC:
I agree that this phone is really nice...but it's Verizon support, or lack of proper/full support, is what hurts it for me anyways. Performance is great, battery is awesome, features are great, and the squeeze functionality is only getting better. It's very limited now but there's obviously potential there that developers are already taking advantage of. I would easily recommend this phone to any one, with extreme caution if you are with verizon. You may never have an issue, or you could be plagued with network issues. It's hard to say but the fact that it's a possibility, and that I've had network issues personally with the U11 add's some validity to this. This isn't a "ROM" problem or developer problem. It's the combination of HTC and Verizon

These Devs have been developing for multiple carriers for years, and I've done the same myself and have helped with specific devices for verizon. It's fact that there is no CDMA support. It's fact that HTC disables bands 2 and 4 for the U11 since they can be turned on manually with software. I strongly believe this is the cause for some of the issues some of us have experienced. In my experience, band 13 is not that prominent in my area of southern california, speeds range greatly from 1Mbps to 5Mbps and at most in special cases to 20Mbps in my testing since launch. This is region specific of course but still worth noting. Now while I do get better signal strength, which makes sense since band 13 is 750Mhz versus 1900 and 2100 Mhz for bands 2 and 4, the speed difference is pretty drastic.

Now could this issues be fixed in future updates? maybe but I don't think Verizon cares to go out of it's way to do so and I don't think HTC has the pull it once did to make verizon play nice. And for me changing carriers is not an option. This is my work phone and I'm on call, and required to travel, so having a reliable cell phone is a must. I'd rate this about 80% reliable, but that 20% is killer for me. I shouldn't have to worry about losing signal randomly or on just a reboot which has happened to me, and I shouldn't have to worry about carrying a spare phone altogether either.

I love HTC, I'm an elevate member, and a user since the HTC Mogul days. I've beta tested for them, tested devices and software prior to release, I'm a fan and a user. I'm a former developer, I've unlocked, s-off'd, flashed, contributed to roms ports, for just about every HTC device available stateside. Porting a rom is not difficult when the hardware is the same for all carriers. And HTC phones are some of the easiest to develop for, they always have been, hence why they have such a strong dev community, and most likely why you visit xda to begin with. I love the U11, but it's just not perfect when combined with Verizon. So I'll have to switch to the Essential phone until the Pixel XL2 comes out, as I'm doubtful there will be an update to these issues. And at this rate I doubt HTC will survive much longer

Sorry for the long post lol. and I know this might put some off on this phone, at least if you are on verizon. Take verizon out of the equation and you have an incredible phone that I would recommend over any other available now.

Anyways just my thoughts on the matter.