yashsingh1/xdaforums huggingface dataset:
[OnePlus 3T Questions & Answers] miladmaz12:
They are aware of the issue, hence why they sent a update zip file to the people who are testing the issue. I assume a OTA update will come asap.
[OnePlus 3T Questions & Answers] vandizzam:
Someone please post the zip. I get better speeds on h+ than lte
[OnePlus 3T Questions & Answers] unknown00:
i need a fix!
[OnePlus 3T Questions & Answers] pierangelo:
hey guys, would anyone mind sending the zip and instructions? thanks.
[OnePlus 3T Questions & Answers] worldsoutro:
https://drive.google.com/open?id=0B2IwvaICxi4vNXNzakcwUjVWcDg
[OnePlus 3T Questions & Answers] djr4x4:
Guessing u flash the zip in twrp?
[OnePlus 3T Questions & Answers] worldsoutro:
No even easier!

Copy the zip to the root of the internal storage

go to check for updates and select from local

select zip file
[OnePlus 3T Questions & Answers] djr4x4:
I've noticed that my DL speeds with the 3t is not near as fast as what my s7e was but the speeds r more consistent.. my upload speed has doubled on the 3t compared to my s7e... After flashing the zip file nothing changed.. still the same..

Edit:this is on T-Mobile...
[OnePlus 3T Questions & Answers] nano303:
Man this seriously makes me not want to get this phone. They should of been ON IT. Like PRIORITY seems to me they don't care much. Tells a lot about how they work. I want this phone but if it's bugged and they aren't willing to fix it at a priority level. Guess I'll just look elsewhere. Sucks
[OnePlus 3T Questions & Answers] 954wrecker:
Band 12 was the issue, band 4 works just fine. Maybe I'm just the only person who didn't notice because I've never seen band 12. 30-50 meg speeds are fine for me.
[OnePlus 3T Questions & Answers] mgbotoe:
Anyone tried playing with the network type preferrence?
[OnePlus 3T Questions & Answers] djr4x4:
I've come to the conclusion that it is the T-Mobile towers in my area. (Southeast Texas) This morning I was getting the same speeds on my 3t as my s7e.. Now the speeds have slowed down some..
[OnePlus 3T Questions & Answers] peach007:
I don't know what this all means, but I'm on at&t band 30. And on my status bar it shows 4G. Sometimes 4G+ but I don't understand the difference

How can someone find out what LTE category they are in or have?

Edit: on 1+ site it says "Connectivity

Network:

GSM: 850, 900, 1800, 1900 MHz

4G LTE (Cat. 6)"
[OnePlus 3T Questions & Answers] LicQuyd:
All I get is H+ for Rogers in Nova Scotia so far.
[OnePlus 3T Questions & Answers] worldsoutro:
LTE is overrated! Phone still good without LTE
[OnePlus 3T Questions & Answers] poor2rican1:
I work and have cricket and they as you all know are a mvno of at&t and they cap the data download speeds at 8mb. I have had no issues at all so far.
[OnePlus 3T Questions & Answers] mekanismen:
Incredibly stupid comment. I sure hope there's some undetectable sarcasm hidden in there.
[OnePlus 3T Questions & Answers] SourPower:
I have a question for you, did you get a new sim card for the op3t or did you already have the nano sim card?
[OnePlus 3T Questions & Answers] justibasa:
I've noticed since flashing the fix-it zip that I no longer have wifi calling. I'd almost rather have the crappy LTE speeds than lose wifi calling.
[OnePlus 3T Questions & Answers] hachamacha:
Did you send a report of that over to Crystal Z. over on the OnePlus thread? It's the only way that stuff will be fixed.

Link to Crystal, part of Dev Team, moderator, working on this problem, etc:: https://forums.oneplus.net/members/crystal-z.864626/
[OnePlus 3T Questions & Answers] djr4x4:
Edit... I am getting this ordeal.. it works for one call and when I hang up it turns wifi calling off with this notice...
[OnePlus 3T Questions & Answers] cpxazn:
How do you flash the patch if you have TWRP? Updating through System Updates just reboots the phone into TWRP and nothing happens. Is stock recovery required for this?
[OnePlus 3T Questions & Answers] cpxazn:
That's exactly what I did and it's rebooting into TWRP and doing nothing.
[OnePlus 3T Questions & Answers] SqueezyCheez:
I've got T-Mobile... where can I enable Wi-Fi calling? I'm not running the fix or anything... just stock.
[OnePlus 3T Questions & Answers] zim2dive:
I believe you can tell its working when you see "VOWifi" at the top (vs. VOLTE).

I confirmed by turning on Airplane mode, then re-enabling Wifi and was able to make a call.

I used this once on an international trip, it was great... altho you apparently do have to get TMo to enable its use when you are out of the country (makes no sense why, but that was what they told me several years ago before that trip).
[OnePlus 3T Questions & Answers] Xdpker06:
I tried, but it made no difference before the patch.

You should definitely report that to Crystal Z on the Oneplus forum.
[OnePlus 3T Questions & Answers] unknown00:
can anyone confirm if the zip is or is not working?
[OnePlus 3T Questions & Answers] mekanismen:
Just got that very same message just now. I have not flashed the fix-zip.
[OnePlus 3T Questions & Answers] djr4x4:
Good to know.. thank you...
[OnePlus 3T Questions & Answers] djr4x4:
I contacted T-Mobile and they I guess u would say reset my sim card to send all the data to this phone like it was a new phone.. (I took my sim card out of my s7e and put it right into my 3t..) so far.. wifi calling is working and I have not received the message.. even tho I have a signal at the house I will continue to test wifi calling to make sure it works correctly...
[OnePlus 3T Questions & Answers] djr4x4:
Did it again.. so I guess now I will take this over to one plus..
[OnePlus 3T Questions & Answers] rickyx32:
So are you guys still having issues? I noticed that all the relevant threads either on XDA, Reddit, or the OnePlus forums have died down. There's great WiFi at work, school, at home, and pretty much every other place I hang out at, so I didn't pay much attention to the problem, but I did notice it. As you can see in the screenshot I was having the same problem early on, but at some unknown point it fixed itself. I haven't done a thing to my phone since I've been busy and because of the lack of official stock ROM images. All I did was reset the APNs and enable roaming.
[OnePlus 3T Questions & Answers] peach007:
I cut my micro sim card to fit. These are my DOWN/UP speeds
[OnePlus 3T Questions & Answers] peach007:
This was my sim from Nexus 5. BTW I have AT&T

Edit: couldn't at SS to my already posted post
[OnePlus 3T Questions & Answers] purplepenguin:
I did local storage upgrade with the zip-fix and it loaded for a bit, then rebooted but it went straight into TWRP by itself and stayed. Is there a way to check if it actually applied/worked other than just daily use?
[OnePlus 3T Questions & Answers] starscalling:
so... has the issue been resolved? The phone looks kinda tight :D
[OnePlus 3T Questions & Answers] hachamacha:
I don't have the phone ATM, but I had applied the {patch}.zip from Crystal. The patch modified the radio and it modified a bit of /system, as well as boot.img.

SO: I'd be surprised if they modified the radio partitions (NON-HLOS.bin) without it showing up as a different version than stock in "about Phone" in settings. The same is likely true for boot.img. I suppose you could diff boot.img with the one from the 3.5.3 stock .zip file. They ought to be different.

Also: The OPA coming up (whenever that is) that is supposed to fix this problem for everyone else that didn't get a .zip file (which might not even exist yet), will not apply on phones that you installed .zip beta-test for T-Mobile on. That would be another clue if you don't want to get into all of that ^^ stuff ;;)

Good luck.
[OnePlus 3T Questions & Answers] purplepenguin:
Ugh I didn't pay attention to the About before vs. after so I hope the update applies to me. At work and at home I get pretty steady/good 4G but when I'm on the go (aka when I need data reliability most the 4G+ stuff drives me insane and the switching grinds data to like nothing.)
[OnePlus 3T Questions & Answers] hachamacha:
I don't think you've got any need to worry since you're here posting on XDA. Someone here will have whatever OTA's roll out available as TWRP zip files within a week of any of them coming out. I think it's better to have control of your device (rooted, custom recovery, SuperSU, etc) than to just blindly accept OTAs as if they also don't have bugs, etc. Let other people test them first, then apply them here from a .zip.
[OnePlus 3T Questions & Answers] CB620:
Return or sale your 3T while you can. This phone is dead in the water. Go get something that works. Speaking to the people using this on T-Mobile.
[OnePlus 3T Questions & Answers] Notchr302:
Ok so I didn't read the whole thread but I just yesterday ordered a 3t to work on Tmobile. Are you telling me there is no lte? So basically this only works correctly on att out of all 4 major carriers?
[OnePlus 3T Questions & Answers] pieman13:
I got horrible speeds on att. Sold this phone immediately.
[OnePlus 3T Questions & Answers] hachamacha:
ATT and TMobile have different problems with OP, OPPO (that owns OP), and a few other Chinese phones. If you have any 4g LTE phone and it's ATT SIM, (especially nano SIM, or can cut a bigger one down to size), then you should have no problems on ATT.

If you look up the IMEI numbers that came with the 3t over on imeidata.net, and look at who provisioned it and for what usage, you'll see that they are all provisioned by China or India for use as 3g phones. Allocating body is PTCRB/CTIA. PTCRB means China/India and CTIA means 3g. ATT doesn't recognize that as valid for 4g in their DB. Only a pre-existing or spoofed (as in from a Samsung s7 laying in their showcase) SIM will give you full speeds.

I gotta stop replying to this thread. ;;)
[OnePlus 3T Questions & Answers] Notchr302:
So am I screwed on Tmobile or what? I'll cancel my order if so. Please let me know.
[OnePlus 3T Questions & Answers] djr4x4:
Do u consider this bad?
[OnePlus 3T Questions & Answers] hachamacha:
No one considers that bad. Are you with ATT or T? Did you have a preexisting SIM or not. If not, did you have to **** around with them to get it in their system? (i.e.) any extra information than the speed test would be nice. Danke,
[OnePlus 3T Questions & Answers] djr4x4:
I'm with T-Mobile with a pre existing sim card.. pulled it out of my s7e and stuck it right in.
[OnePlus 3T Questions & Answers] hachamacha:
I did the same with ATT and got similar speeds. Most of the people with problems on ATT are with new SIM cards, which are seen as 3g. Not sure with T-Mobile.

---------- Post added at 10:42 AM ---------- Previous post was at 10:39 AM ----------

There's no formula that I can see for figuring out how it'll go (with TMobile), but I'm betting more people are doing OK rather than bad. You can try to contact Crystal Z. over on the OP forums and see if you can get an update from her. She is connected to the dev team working on it.

You do get 15 days to figure that stuff out and get a full refund, so it's not life or death to try it out and give OP another 2 weeks to come up with a solution, but I would never tell anyone they're screwed (or not screwed) just because there is a current problem. I don't know.
[OnePlus 3T Questions & Answers] purplepenguin:
:eek: how are you so knowledgeable and thank you for your reply to my post as well :)

edit: My T-Mobile SIM is brand new if that contributes to any evidence/sample size. (I get the 4G/4G+ switching in many areas that slows data and drains battery.)
[OnePlus 3T Questions & Answers] hachamacha:
I'm not knowledgeable but thanks for thinking so. This is what happens when you have 2 weeks off from work and you just got a new phone! ;;) ,

I would say that it's completely possible that a lot of what I've said in this thread is just plain wrong. I happen to know about the IMEI stuff because I had a short contract recently where I had to figure out a problem similar to this. Turns out it was nearly everyone's fault, but nothing wrong with phones h/w or s/w. Everytime I've gone over to T-Mobile or ATT with an off-brand (or just a phone they didn't have in their DB), I had at least "some" problems because if the IMEI said 3g capable via the issuer, then ATT at least won't have it as an OK phone in the IMEI (or won't have it at all). T-Mobile, I went into , got a blank card, and I had a Brazilian (I think that was the country) Galaxy Alpha that they "didn't support". It took a little while to get it into the IMEI, but TMobile loves Samsung so it only took a short time and it was working fine. I've been using that nano sim for all Tmobile stuff since. I used the same phone at ATT, had a similar problem , and when it finally worked, kept using that SIM, and it worked fine on the OP3t.

Thanks.
[OnePlus 3T Questions & Answers] Notchr302:
So I'll take it that it does work on Tmobile with the argument that it doesn't get good speeds. If there was indeed an issue, I would think OP would send an update or one with nougat to address it. I think I'll keep the phone coming and play it by ear.
[OnePlus 3T Questions & Answers] mekanismen:
I don't get what some people here are on about. I'm on MetroPCS (T-Mobile subsidiary), getting 50DL/23UL. Yes, speeds with CA does affect loading times for images and other things in apps at times, but it happens a few times a day at most, for me personally.
[OnePlus 3T Questions & Answers] unknown00:
any updates?
[OnePlus 3T Questions & Answers] magoo5289:
I haven't seen anything over 12, and I only got that once. Normally it is around 2-3mb.
[OnePlus 3T Questions & Answers] fropirate:
There is a new OTA that supposedly includes this fix.

Edit: Still getting slow download speeds (1-4Mbps) on 4G / Band 4 in Chicago. I don't get 4G+ / Band 12 here so I can't test that.
[OnePlus 3T Questions & Answers] YankInDaSouth:
Ugh! Going to wait to see if more folks chime in, but my cursor is hovering over the "cancel" button and my finger is twitchy LOL
[OnePlus 3T Questions & Answers] djr4x4:
Been happy with the 3t since I got it...

I'm on T-Mobile...
[OnePlus 3T Questions & Answers] YankInDaSouth:
Well this is good to see! Definitely speeds I can live with â˜º
[OnePlus 3T Questions & Answers] djr4x4:
I have the same exact speeds with this phone at my work as I did with my s7e... Actually my uploads r faster with the 3t then the s7e..
[OnePlus 3T Questions & Answers] YankInDaSouth:
Awesome, good to see some positive posts! Going to proceed with the order ?
[OnePlus 3T Questions & Answers] Notchr302:
Yep that's what I thought. It's just an update away.. Stop the panicking.. Lol
[OnePlus 3T Questions & Answers] av78130:
just received update...

received an update notification on my phone just about 30minutes ago. Installed and everything looks good. Haven't seen it switch to 4g+ once. Usually prior to the update at home my phone was switching back and forth to 4G or 4G+, now its just steady 4G and pretty normal speeds. Looks promising folks. Also the update log shows optimizations for US-Tmobile network. included pics of update log and build number.

http://i.imgur.com/yxDnLmz.png

http://i.imgur.com/g2SYWuO.png
[OnePlus 3T Questions & Answers] purplepenguin:
Can the fix from the new update be cherry picked out and made flashable like that test zip? Looking for definitive fix as I just put the CM 14.1 build on my device. Don't know if it's possible..
[OnePlus 3T Questions & Answers] GiSS88:
I'm seeing worse speeds after the update. Think I need to adjust my apn, as it's under 1mbps in the speed test app.
[OnePlus 3T Questions & Answers] tatail:
I also having issues.. this is what fixed it for me.

Settings>SIM & Network Settings>Sim1 (in my case)>Access Point Names> click the three dots on top right> click reset to default> then select any of the fast.t-mobil.com apns
[OnePlus 3T Questions & Answers] GiSS88:
I tried that with no luck. Changing the APN seems to have helped.
[OnePlus 3T Questions & Answers] mgbotoe:
And you changed it to?
[OnePlus 3T Questions & Answers] djr4x4:
Using this one and all is working fine..
[OnePlus 3T Questions & Answers] weroliera:
Updated mine and I guess the cellular radios on this phone is just junk. I pop my sim back and forth on my 7 plus and 3t. 3t will get 7 or 6 Mbps. Then I throw the sim from oneplus 3t to the 7 plus and it gets 30mbps.
[OnePlus 3T Questions & Answers] pieman13:
And this is why I left and will no longer support one plus products. There seems to be a large variance from device to device. I've had 4 one plus 3 models and each seemed to have a different hardware related issue.
[OnePlus 3T Questions & Answers] YankInDaSouth:
I'm out too ... canceled my order. Sad cause I was really excited to try Oneplus for the first time!
[OnePlus 3T Questions & Answers] 954wrecker:
Glad I didn't see this thread when I placed my order. My T-Mobile LTE works the exact same on my OnePlus 3T as it has on every other phone I've ever used.
[OnePlus 3T Questions & Answers] Notchr302:
Yeah I'm not going to cancel because of something I read on the Internet with all due respect.
[OnePlus 3T Questions & Answers] tatail:
Guys, this is a great phone and the new update fixed the T-Mobile CA problem..

There is another problem that I have come across and that is whenever I have VoLTE I won't receive text messages.

Anyone else having this issue?
[OnePlus 3T Questions & Answers] djr4x4:
No sir.. no issues like that.. texted all day today and phone was on volte..
[OnePlus 3T Questions & Answers] tatail:
Hey thanks for the reply.. now this makes it very weird..

I can reproduce the issue anytime I turn on VoLTE..

I don't know now if I should call T-Mobile or OnePlus?
[OnePlus 3T Questions & Answers] weroliera:
Update didn't fix anything for me. Also the speed I guess for some is enough. Super annoying when I was in a setting a menu and I would press a setting and it would not register so I would press again and then go two menus deep. And not to mention battery life was very bad for me. But I think it has to do with the **** cellular antennas. Phone was literally in my car Just on standby and battery would drain like crazy.
[OnePlus 3T Questions & Answers] kramer987:
I had this problem but are you.sure you don't have vowifi enabled? I couldn't receive texts with that turned in but could make calls. once I turned it off everything was fine
[OnePlus 3T Questions & Answers] GiSS88:
Still getting crap speeds in speed test, but feels OK otherwise. Not sure what the deal is. No longer seeing 4G+ at all.
[OnePlus 3T Questions & Answers] tatail:
Yeah I am sure I don't have VoWIFI on..
[OnePlus 3T Questions & Answers] Amd4life:
I have a new 3T, using an "OLD" nano sim, and the latest update on T-Mobile, and my speeds seems to be fine. Also the rendering speed with this 821 vs my 808 and 810 devices is AWESOME. I wonder why it's a device to device issue?
[OnePlus 3T Questions & Answers] domperfater:
3t variants

Not all variants of OnePlus 3T support all T-Mobile LTE bands:

http://pdadb.net/index.php?m=device&s=compare&ids=10973.10965.10969
[OnePlus 3T Questions & Answers] terryYew:
Just a quick Speedtest comparison: 3T, OG Note Edge n Axon 7

I did a data comparison on the 3T, Axon 7 and the Original Note Edge using the Speedtest app. There is definitely something that should be done by OPPO/OnePlus for us T-MO customers that are experiencing slower than usual data speeds AND sometimes losing the data signal. This is the first time in years that i get buffering on Youtube and other video sites. It isn't all the time but when it does happen, smh. There are a few other things that I don't like with the 3T but those i can work around. I'm bringing it up because I'm still keeping it. I love the speed(using the phone not data) and mostly pure Android. It's faster than the rest! :highfive:
[OnePlus 3T Questions & Answers] vandizzam:
LTE is really scewed on T-Mobile. I get buffering on LTE. When I switch to h+ I get no buffering on YouTube 1080p
[OnePlus 3T Questions & Answers] bricky23:
50 mbs download speed and your winning? You need to get a Life!
[OnePlus 3T Questions & Answers] vandizzam:
I'm getting these speeds yet still get buffering on 1980p YouTube videos. Im on T-Mobile and have hd pass. It be cool if some of the devs could help us figure this out.
[OnePlus 3T Questions & Answers] terryYew:
Thanks for the suggestion, but i really do have a life that i enjoy lol. I'm going to bet that you meant whining. Bucky if something is wrong then it's up to us as the product users to inform the manufacturer. The speeds that are in my comparison test were done when i finally had the time to sit and use each phone. i don't have any time at the moment to do another comparison test however the Edge and the Axon were never this low. There is a problem,they know this.

Here is a history and just now.
[OnePlus 3T Questions & Answers] carlitozway57:
Has this been resolved? This thread plus the one from oneplus forums seems to have quieted down.
[OnePlus 3T Questions & Answers] m0d hipp¥:
LTE seems to work for me. I just got my phone couple days ago.
[OnePlus 3T Questions & Answers] carlitozway57:
thanks
[OnePlus 3T Questions & Answers] se7ensde:
What rom and kernel and other setup are you using when you get that speed?
[OnePlus 3T Questions & Answers] 954wrecker:
I'm guessing stock oxygen since that post was the week the phone came out. I was getting those exact same speeds on T-Mobile the month I used them.
[OnePlus 3T Questions & Answers] se7ensde:
that's what I figured. I'm using rr with elemental x. I get good LTE still and aggregation is not a problem. But I have done some speed tests in different locations I noticed in my house upstairs I get about 3mbs download and 1 upload. Then outside or downstairs my speed was 30 down and 25 up. So I think it's all about your location how much coverage is in your area and if you live in a house or building where lte does penetrate the walls or roof or whatever it comes in through that determines how well lte works for you. Ps I'm using t mobile in southern California.
[OnePlus 3T Questions & Answers] davidsimmonds:
OnePlus 3T no LTE with tmobile

I am getting the same issue with no LTE on T-Mobile. I got a new Nano-SIM card at a T-Mobile store and it was provisioned there. I had only the H+ symbol (HSPA) on starting the phone. An LTE tower was on the T-Mobile building so there was LTE available. I only show 2G/3G/4G and no LTE option in Settings | SIM & network settings | Preferred network type. I show no LTE related APNs and fast.t-mobile.com was the selected APN. I have called T-Mobile and they added my IMEI number into their database. They said that would likely not change anything. No LTE after a few hours and rebooting. Is there a solution or reason that anyone knows of for this?
[OnePlus 3T Questions & Answers] 954wrecker:
Sounds like you got a NON US version of the phone. If you didn't get it from OnePlus directly then thats probably what happened.
[OnePlus 3T Questions & Answers] pk-air:
I am on T Mobile too and I am getting LTE. In settings it does not show LTE option only 2G/3G and 4G. I haven't checked the speed test. I am on 7.1.1 latest stock community build rom.
[OnePlus 3T Questions & Answers] zim2dive:
If you install the app "LTE Discovery" what does it tell you about which bands it can see?
[OnePlus 3T Questions & Answers] nano303:
Nice to see another person with an opo in Denver!! I knew I recognized your wallpaper
[OnePlus 3T Questions & Answers] pk-air:
Thanks! Have been here since Oneplus One :highfive:
[OnePlus 3T Questions & Answers] nano303:
I'm new since one plus 3T lol good to meet you man! ????
[OnePlus 3T Questions & Answers] pk-air:
For sure! good to meet you too! If you have troubles with your OP3T that you can't resolve pm me. We can even meet if needed and brake the broken or fix it :p ;) :D
[OnePlus 3T Questions & Answers] nano303:
Sweet man! Sounds good to me bro you 420 friendly?? I always wanted a smart person to help me out with phone stuff when I need help. Always had to look up on the net and mess **** up myself haha haven't rooted since the Galaxy s3 bro but I'm really looking forward to rooting my 3T thanks a lot fella
[OnePlus 3T Questions & Answers] se7ensde:
My speeds are just fine and it always says LTE+ or LTE.