Huawei Mate 20 Pro on T-Mobile?

Welp. I took the plunge. Mate 20 Pro should be here in a couple weeks at latest and just signed up for TMobile service. Fingers, toes and eyes crossed for luck. Will certainly update once the rubber hits the road.

Thanks for your original informative post loucap!

Looking forward to hearing back. WiFi calling is a must for me!

One Plus 6T is exciting but the killing of the headphone jack was a real bummer ended up ordering an S9+ through Samsung since they are also running a deal till tomorrow where they give double the trade in value on devices. Still, the One Plus 6T looks amazing.

Well there is bad news for those who would rely on Wi-Fi calling. For reference, I have the international unlocked LYA-L29 updated to build number 9.0.0.126.

tldr:
No WiFi calling on T Mobile, the regular mobile network call quality seems clear and T-Mobile's data is a reasonable up-and-down speed.

Details:
I cannot find any evidence of the Wi-Fi calling setting anywhere in the phone. I tried under two different settings locations that were recommended on the web for the Mate 20 Pro as well as in previous P10 and P 20 Pro phones.

Neither of these settings locations had the option for Wi-Fi calling shown. It wasn't just grayed out it's simply wasn't there.

One location is under Settings... Wireless & Networks... Mobile network. There should be a Wi-Fi calling slider button here under 4G slider button according to screenshots found online. It's not there.

The other location is to open the phone dialer click the three dots in the upper right click settings and we should see Wi-Fi calling there. It's not there.

As tmo-chris indicated it looks like T-Mobile is not supporting Wi-Fi calling on the Huawei Mate 20 Pro. So it's a T-Mobile issue rather than a phone issue.

The phone works fine to make calls, and data works as well. I've placed some calls and call clarity was great. I also turned off WiFi and ran several speed tests with the Ookla Speedtest app. The Speedtest app on T Mobile data showed some variability but pretty decent speeds (all following speeds rounded off to whole number Mbps). The lowest was 13Mbps Down and 7Mbps Up. More often it ranged from 39Mbps - 49Mbps Down and 14Mbps - 17Mbps Up.

I am switching from Sprint and still have their service I ran speed tests on the same app on a different phone on Sprint's mobile data network. Sprint speeds ran between 48Mbps - 57Mbps Down and 2Mbps - 3Mbps Up.

I am not familiar with T-Mobile speeds for very long but they look to be slower Down in my area than Sprint which is a serious bummer. T-Mobile is much faster Up, but I don't care about that.

So, hope this helps everyone considering the Huawei mate 20 Pro. It does not have Wi-Fi calling on the T-Mobile network, and unless T-Mobile actively works to support WiFi calling on this phone it will not have it in the future.

However so far call quality and data is acceptable, I will update if that changes.

PS- Other than WiFi calling (and no access to Huawei cloud or other Huawei apps because they are not supported in the US), this phone is a freaking dream come true.

Thanks for trying!  It's disappointing that the Wi-Fi calling won't work, but it's still an awesome phone!  Unfortunately, I need that Wi-Fi calling for an area I frequent that is a cellular dead zone for ALL carriers.  I have the OnePlus 6T arriving this week (International Unlocked) so we'll see how that does on T-Mobile.  Being that they're selling it too (locked), it should work like a champ!

The Canadian version of the phone supports band 66 and should support T-Mobile's WiFi Calling.  Rogers (AT&T Canada uses the stock Andeoid implementation of WiFi Calling, which is also what T-Mobile uses. 

Looking to get the Mate 20 Pro or the Mate 20 X here in the next month or so. Just wanted to see if you had any tips on purchasing? Where you got yours and what to look for as far as returns or certain bands? Thanks.

Hi codified,

Can you tell me though, does the L29 version you bought have VoLTE enabled on T-Mobile?! I'd REALLY like to know!

You should see it listed in Call or Network Settings, but more importantly, during a call, it should connect in under 5 seconds and also it should say "HD+ or "HD Voice" on the stock phone app as well.

Thanks in advance!!

Hmmm, I don't think that voLTE is enabled on the Huawei mate 20 Pro on T-Mobile. You may need to give me some follow-up guidance though and how to double check or confirm this.

I don't see anything in the settings that you mentioned (settings in the stock dialer, or in the general phone settings under 'Wireless and networks'). Also, to your second point, when I make calls there is no HD or HD+ icon; this includes both outbound and inbound calls, neither has that icon. When I look online the phone appears to support the Bands which would be used for voLTE, but I don't see that it's actually implemented or available.

Okay here's where it gets dicey though... we also have the t mobile locked OnePlus 6T, and I can't find any mention of voLTE in the 6T stock dialer settings, or in the General phone settings under 'Wi-Fi & internet'). Having said that when I make outbound calls to the mate 20 Pro the HD+ icon appears in the stock dialer of the 6T. But when I receive an inbound call on the OnePlus 6T from the mate 20 Pro, the only phone I've checked and inbound call on, there is no HD+ icon. That's why I hesitate to give you a solid answer, my positive control so to speak of the OnePlus 6T is only showing it for outbound calls, and so I might not be interpreting that correctly.

As to why vo LTE does not show up in the OnePlus settings, perhaps this link indicates something? Since T-Mobile says that it can't be turned on or off perhaps they have hidden it in the settings, and it's just always on. Link below.

https://support.t-mobile.com/docs/DOC-38906#steps7

Hope this helps.

tldr; Best phone I've ever had and everything I hoped for, but you better do your research on the green tint screen bleed and recognize that you're gambling.

Well, I got mine on eBay as well it was pretty fast shipping and paid 1199.99 from a USA based seller who was very responsive and who I would recommend. The purchasing experience was great, this is the one I got (price has since dropped by $50, link below).

https://www.ebay.com/itm/New-Huawei-Mate-20-Pro-6-39-Inches-Dual-SIM-40MP-6GB-RAM-Factory-Unlocked-Phone-/263997277658

First thing I would say is absolutely do some research about a green tint screen bleed. this is a problem that is apparently quite pervasive and popping up on quite a few mate 20 devices with different degrees of severity. since the phone would likely be bought from an international source and Huawei would provide no u.s. warranty, it could be quite the Gamble.

I can actually see the screen bleed on the phone that I got, but it's quite infinitesimal. I have to go into a pitch-black closet, bring up a dark gray but not black background, and play with the brightness slider. But the green tint bleed is there... unambiguously there.

Also, something I haven't seen other people mention, is it in the stock camera app as you cycle between portrait, Pro, Photo, video, there is bleed from the top of the screen near the notch. This bleed only dimly flashes downward from the icons that switch in and out as I cycle between the settings, and again is noticeable in a dark  (but not Pitch Black) room.

Finally in terms of the display, if I go to YouTube and just play gray background screens, I get an intermittent and irreproducible dark slight blotching affect creeping from the edges of the screen toward the middle.

From what I understand Huawei is trying to say that at least the first and third display issues I described above are features of the curved screen. I can attest this is absolutely not the case, because the green bleed and dark blotchiness are not regular along the curved Edge and also can occur near the top and the bottom of the display.

I wanted to be really transparent, and set expectations for the worst. Having said that it's really quite unnoticeable to me, I have to work at making these display issues noticeable. I might not have even noticed them if I hadn't read about the pervasive problem and set myself up in a pitch-black room to probe the problem. I may post some of this on XDA Dev forum to compare notes with others, but haven't done that yet.

My concern is whether these will grow in magnitude and severity. if I was assured that my phone would stay in the condition it's at, and never get worse I wouldn't even consider returning it. Unfortunately it's too early to tell whether the problem will get more severe we just don't have enough data, or time in flight yet.

I still have a short period of time before my return window closes through the seller and I would be stuck trying to do a send in to an international warranty in Asia. That's not a fun thought. I'm hoping that over this next little bit of time I can ascertain whether there's even a minimal increase in severity, in which case I will return the phone. But if it stays at the state that it's in, quite frankly it's such an awesome phone that I'll probably just keep it and Gamble.

Okay so what makes it awesome? As to what I would be comparing it against I also got a OnePlus 6T (locked, from T-Mobile), and have been switching back and forth between the mate 20 Pro and the OnePlus 6T for a few days.

I know the OnePlus gets rave reviews, and my SO (who has a OnePlus 6Tas well) loves it, but to me it pales in comparison to the mate 20 Pro. Frankly I only got the OnePlus 6T phone for myself because it was priced at half off through T-Mobile and just in case I have to bail on the mate 20 Pro. Because of its Wi-Fi calling and volte, I'll probably use the OnePlus when traveling to some areas.

But, so far each time I switch over to the OnePlus, and shelve the mate 20 Pro for a day, I do it with a Grimace and a sigh of despair.

Don't get me wrong, I'm sure I would have loved the OnePlus, if I had never held the mate Pro. For the half-off price it's a no-brainer. At the T-Mobile half off price for the OnePlus, it's only 1/4 as expensive as the mate 20 Pro! That's an insane cost differential. It's just hard to climb down off of the top, even though the OnePlus is objectively a great phone (except the one plus in screen fingerprint sensor is blindingly bright in a dark or dim room, annoyingly bright).

Ok, so... mate 20 Pro: I really love the form and the features. It's simply the best phone I've ever had. Better than the note 7 that I had briefly until the Samsung battery police came and grabbed it from me before it might have blown up

The emui 9.0 UI is really nice (coming from falling and LG) I'm not sure why people don't like emui. I'm digging the gestures. The face unlock is wicked fast even in the dark. I can uninstall or basically block the few bloatware apps that came preinstalled. The screen recorder is just awesome (although Huawei might regret putting that on there since I'm using it to capture some of the screen issues).The knock split screen and other knock features are intuitive and I'm already addicted to them.

It is true that with gestures fully enabled things like picture and picture are difficult, and sometimes unworkable. this doesn't bother me too much and I can usually gesture a couple of times to get around it, but I can imagine it would bug the heck out of some people. If you don't use gestures and instead use the nav buttons, this is not an issue at all.

The one thing that I can't figure out if it's my user ignorance or a phenomenally stupid oversight by Huawei is that there is no apparent way to toggle auto brightness on and off in the notification tray. You have to dig down deep into the full settings to toggle auto brightness on and off. This is enormously frustrating, I don't know if it's a bug, or a feature of emui 9.0. It might not bother others but for me it detracts from the user experience to a surprisingly large degree.

Overall again it's a fantastic phone it's everything I was hoping for. Not having Wi-Fi calling is not a big deal for me, not having (apparently) voLTE doesn't seem to be a big deal as I get fast calls with great reception. even with Wi-Fi turned off so that I'm exclusively using the cellular network, I am able to send and receive texts and gmail and cruise around online websites while on a phone call... which is absolutely essential to me. Interestingly the only thing that I expected to work when I'm on the phone but which doesn't seem to, is sending and receiving messages through the Viber app. When I send messages or am sent messages through Viber, they're held up until I end the call. I'm not sure why I would be able to access the internet when on a call, but not use Viber.

I'm just desperately hoping that the screen issues stay as infinitesimally minimal as they currently are, cuz I really really really really want to keep this phone. But, caveat emptor.

PS if you're considering the Huawei mate 20 Pro, maybe check my post above describing my perspective relative to the OnePlus 6T and a note about a watch out on the screen.