yashsingh1/xdaforums huggingface dataset:
[Nexus 6P Q&A, Help & Troubleshooting] snovvman:
Try rebooting your phone at least five times. If it immediately connects to LTE each time upon boot without having to toggle airplane mode, then so be it. I have wiped cache, etc. from backup, flashing packages, etc., but still see the boot/LTE issue. At the same time, there are days where LTE connects perfectly after reboot, so the issue is intermittent.

At best, if your 'fix' works for you, it is a condition specific to certain phones. The bug still exists.
[Nexus 6P Q&A, Help & Troubleshooting] lbarb2133:
your absolutely right
[Nexus 6P Q&A, Help & Troubleshooting] zoltrix:
Hi everyone

I'm in this boat too. 100% 6.0.1. Telus in Toronto.

However is anyone else getting no service? I see full reception bars but i can't seem to dial out or receive calls sometimes too.

Airplane mode refreshes it.
[Nexus 6P Q&A, Help & Troubleshooting] d3zt:
I'm in Perú, i have the same issue, however my Internet connection won't work on 4g and I have to use 3g only, I hope Google fixes this soon!
[Nexus 6P Q&A, Help & Troubleshooting] brushrop03:
I'm still on 6.0 and have connectivity issues. Basically, my Nexus will go from LTE to absolutely NO reception. Not even 3G. It will only do this for 2-3 seconds but it will happen fairly often during the day. Maybe 10-15 times.
[Nexus 6P Q&A, Help & Troubleshooting] wooddale:
Yeah what carrier are you on? I'm on VZW it happens all the time. I'm in a poor signal area like I said before 6.0 wasn't the best has trouble locking on if you airplane it locks on and stays there. 6.0.1 sucks the big one though unless you run a strong signal area and don't move around much otherwise stay where your at till we get a fix if we do. There is not that much difference anyway.
[Nexus 6P Q&A, Help & Troubleshooting] 4redstars:
constantly having this issue, I just toggle airplane mode and I'm GtG. This is really annoying though. google needs to update with a fix.
[Nexus 6P Q&A, Help & Troubleshooting] jabbermacy:
What (still) works 100%:

LTE>2G, then turn off data, reboot... 2G >LTE, turn ON DATA

TADA! LTE every time... (and it 'sticks')

---------- Post added at 08:09 AM ---------- Previous post was at 08:07 AM ----------

"The bug still exists"

ABSOLUTELY
[Nexus 6P Q&A, Help & Troubleshooting] :
Same story in Israel.

It's possible to force "LTE only" with "4G Switcher" from the Play Store, but it doesn't stick.
[Nexus 6P Q&A, Help & Troubleshooting] :
Update:

Went from stock + ElementalX to Pure Nexus + Kylo.

So far so good. Works great and persists restarts. Will keep on updating this post. Funny fact - it actually switched from H to LTE as I was writing this :)

Further info:

I have a 64GB aluminium. LTE should work perfectly, considering Israel and the US use exactly the same LTE bands. My carrier is Pelephone, didn't test any other carriers so far (all my friends have micro sims). Never happened with a Lollipop OnePlus One.
[Nexus 6P Q&A, Help & Troubleshooting] borsin:
Running 6.0 with 6.0.1 radio. No issues!
[Nexus 6P Q&A, Help & Troubleshooting] mistermojorizin:
i'm on 6.0.1 VZW. The problem is only at bootup, phone can't connect to LTE, can't be even forced to LTE. If I do any one of these 3 things, issues is fixed until next full reboot: 1) toggle airplane mode on and off; or 2) toggle "radio" on and off in hidden phone menu; or 3) soft reboot.

After that, I an move around as much as I want, it will handoff from LTE to 3g and back to LTE as appropriate and very quickly. I can force LTE only if I wanted to at this point (which I can't after a fresh reboot).

So It sounds to me like you have other defects going on with your reception. Mine didn't start till 6.0.1 and it's only after a full reboot, and can be fixed temporarily using one of the 3 things I list above and will stay fixed until the next full reboot. No other reception issues.
[Nexus 6P Q&A, Help & Troubleshooting] wooddale:
Yeah I think it's got a lot to do with signal strength to. Like I said even now on 6.0 it holds on and switches but sometimes it holds on to long it still says lte and its reading 137 db which is nothing but it doesn't have anywhere

to go 6.0.1 was horrible I could get it to lte but when it dropped off wouldn't switch. So I'm back on 6.0 till it gets fixed.
[Nexus 6P Q&A, Help & Troubleshooting] Exostenza:
I just noticed this problem today and came on the forums to see if it was just me and well I guess it sure as heck is not just me! I have found that it goes down to H and then stays there unless I go to settings and change the preferred network type to 3G and then back to LTE and it will stay on LTE for a little while (maybe an hour or two) and then drops back to H and stays there unless I repeat the process. LTE is so much better here than H (Calgary, Rogers) and this is really starting to become annoying as I am paying an arm and a leg for LTE service but am not using it a lot because of needing to switch to it manually all the time. Good thing I got this brand new phone with the best hardware in it... I really hope they fix it sooner rather than later. Has anyone made a fix in a ROM by any chance?
[Nexus 6P Q&A, Help & Troubleshooting] brushrop03:
I'm on AT&T. In Atlanta so pretty good signal. Just keeps randomly dropping though
[Nexus 6P Q&A, Help & Troubleshooting] PaulQ602:
Only read the last 4 pages of this so forgive me if this was mentioned earlier. I almost never got LTE, stuck on H (HSPA). After trying multiple possible solutions mentioned in forums, I spoke to AT&T support and they gave me this page with recommended APN settings. My APN settings were NOT the same as those on this page. I changed them. I have had consistent LTE for the past two days. I remain on "ATT nexgenphone."

Just another thing to try... See this web page for specifics:

https://www.att.com/esupport/articl...are&siteId=JAF5WzpxbKM-4LDlHQddNK0lMa3gb0PLoA

Good luck!

(I'm 100% stock, 6.0.1)
[Nexus 6P Q&A, Help & Troubleshooting] jeebuspwnz:
I haven't tried the new image just yet, but I can confirm that it contains the same radio as the previous image (2.50). However, I never suspected this issue was radio-related.
[Nexus 6P Q&A, Help & Troubleshooting] caifan:
On the latest image mmb29p, and same issue. I have to toggle airplane mode to get LTE on a reboot.
[Nexus 6P Q&A, Help & Troubleshooting] jeebuspwnz:
I just flashed MMB29P and can confirm that LTE still doesn't connect after initial boot. However (just like with the previous rom), letting it sit for 2 minutes and not bothering with airplane mode and it will connect to LTE.
[Nexus 6P Q&A, Help & Troubleshooting] likonvampire:
Thanks for confirming, I was just about to post that ..
[Nexus 6P Q&A, Help & Troubleshooting] wooddale:
I said this before and I'll say it again Google don't give a crap. I've been at this game since the original droid I've had more phones than I can count. In the old days OTA's were few and far between and they still didn't fix stuff. They pretty much do what they damn please. Calling the BBB and putting in a complaint worked for me on Verizon don't see why it wouldn't work on Google. If you put in a complaint they have to answer it. I'm gonna do it and at least see what they have to say. They'll probably only offer you a brand new phone but maybe buy the time you get it the problem will be solved if not you got a brand new phone you can sell for top dollar.
[Nexus 6P Q&A, Help & Troubleshooting] nrfitchett4:
mine was already at those settings. Still stuck on HSPA 99% of the time. Thinking about going back to 6.0.0 which seemed better for connectivity and battery life.
[Nexus 6P Q&A, Help & Troubleshooting] PaulQ602:
Not exactly sure what you are asking here but I remained on "attnextgenphone" by selecting that option - do you not have that choice? I stayed on that because the guy that told me about the settings web page told me to use that setting.

Sorry to hear it's not working for others. I have held LTE since making this change and I am on 6.0.1.

I don't know if it helps but during a previous chat with AT&T, they told me my phone would go for the strongest signal, be it HSPA or LTE. That doesn't really seem logical to me but that's what he said.
[Nexus 6P Q&A, Help & Troubleshooting] mattkroeder:
I guess I have a much less severe version of this issue.

If I reboot the phone, sometimes it'll connect to HSPA first, whereas normally it will connect to LTE upon boot.

And I noticed that if I happen to have bad signal somewhere (such as inside a building) and I lose LTE, it'll switch to HSPA, which is normal. However, once I step back outside or somewhere with good signal, it won't connect back to LTE until about a half hour later.

Luckily, my 6P still connects to LTE most of the time. It just seems to stick to HSPA+ mucher longer than it used to. I am on Telus in Canada.
[Nexus 6P Q&A, Help & Troubleshooting] PaulQ602:
Ok. All of my settings that matched those on that page were the same except for:

the "Name" (which I left "ATT nextgenphone" and I had always been on that setting, never changed it)

the "APN Type" (which I changed to what it says on that page)

the "APN protocol" (which I think has ipv6 too on our phones... I left that)

There are also some setting on our phone that aren't on that AT&T web page which I left as is. It is my opinion that changing that "APN Type" is what solved the problem for me because it was the only actual change I made on my phone. But - other people are saying it didn't do anything for them.

Maybe try those settings and use "ATT phone" instead?

Returned to LTE each time (after first reboot, and second). Then turned on WiFi, turned off WiFi, returned to LTE.

Sucks it's not working for you. :( All I can say that here in Phoenix, on AT&T, it worked.

Oh - it also was funny how when I actually went into an AT&T store to swap my SIM card in my first attempt to fix this and it didn't switch to LTE that the guy there told me multiple times that he has never seen a non-AT&T phone hop on LTE. I want to go back and show him my phone!
[Nexus 6P Q&A, Help & Troubleshooting] chrisexv6:
FWIW since that original bug wasnt getting any traction, one of the users in that thread opened the same exact bug as a new one and (oddly enough) got a response within 20 minutes of opening it. The response was from the same dev that seemed to have forgotten about the original bug and they asked for the same information that was provided in the original issue thread.

I finally put a 6.0.1 ROM on my N6P a few days ago. I chose to fastboot flash only the updated vendor and bootloader images and left the radio alone. So far Ive seen what I think to be the 3G/4G issue happen once. Toggling airplane mode (once) fixed it. I will keep an eye on it as I go to places I know knock down to 3G.

Really disappointing Google hasnt even acknowledged its a bigger than "small" priority issue.
[Nexus 6P Q&A, Help & Troubleshooting] krolla03:
If you look at our default settings for the APN the APN Type is the same for the Tablets part of that website.

Anyways i changed it to what the website said for phones like you did. Still have the same problem.

Only way for me to fix it is to go to the hidden settings menu and toggle the radio on and off a few times while also switching to Auto and LTE Only a few times. Then im on LTE till next reboot.

**UPDATE** After i changed my APN to the settings you did per the website you provided i could no longer make phone calls. Every time i made a call the call was instantly ended. I had to set the APNs back to default.
[Nexus 6P Q&A, Help & Troubleshooting] chrisexv6:
When I said traction I meant on Googles' side. There are lots of replies in the first thread but nothing from the Google side after the initial "please provide the following....". They never updated the priority, never replied back, etc. That is a "lack of traction" if you ask me. USERS replying that there is something wrong is completely different.

And Google is free to merge the threads (again) if they want.......that would at least be an indication that they still see the actual issue. But the fact that they haven't even made it a medium level defect, even after 240+ people replied, another monthly update, etc. makes me feel like they need a kick in the a$$ to actually take it seriously.

And if you look at the master list of bugs, I find it annoying that they have "bugs" about documentation "issues" that are listed as a higher priority than LTE/3G signal issues.
[Nexus 6P Q&A, Help & Troubleshooting] PaulQ602:
It was great while it lasted. Now I'm back on HSPA and it's been stuck on it since this morning. ?

Sent from my Nexus 6P
[Nexus 6P Q&A, Help & Troubleshooting] PaulQ602:
Ok. It went back to LTE about an hour later and has remained on LTE since.

The bottom line is that there is no rhyme or reason to why it's working for some people and not for others. Some people are finding success with the apn info I posted, others are not. Some people are finding success with entirely different apn settings. All this turning modes on and off, rebooting the phone... it's just chaos. There is no consistent solution, no consistent set of circumstances that leads to a successful LTE connection. This thread is a slew of different approaches and different results. There is definitely something wrong with Marshmallow, the 6P, AT&T (and other carriers) or a combination of them.

In a nutshell, it sucks.
[Nexus 6P Q&A, Help & Troubleshooting] kenbrownstone:
Mine has been doing same crap. I'm on Verizon.
[Nexus 6P Q&A, Help & Troubleshooting] mistermojorizin:
It's obviously something during boot that prevents it from connecting to LTE, even if I force LTE, it'll just say no service. I bet the devs on here could figure it out if they tried.
[Nexus 6P Q&A, Help & Troubleshooting] snovvman:
I disagree. Just because we haven't identified a pattern or cause, it does not mean that there is 'no rhyme or reason'. If that is true, this problem would be eternally unrepairable. I do believe that it will get addressed at some point--when is the question. In technology, there is almost always a set of conditions that triggers a fault, even if it is identifiable by the masses. For my observable condition, I suspect that it has something to do with signal strength during boot. If it is under a certain threshold at a given moment, the phone does not properly 'up switch' to LTE. A later reset of some sort, such as airplane toggle, causes the phone to properly make that switch.

Adding to the confusion, this thread includes a mash of people with different issues.
[Nexus 6P Q&A, Help & Troubleshooting] jdenman03:
Here is my video of the problem.

https://youtu.be/eJrx_qYK8yY
[Nexus 6P Q&A, Help & Troubleshooting] Rado_vr6:
Same issue here on AT&T. Not sure why in the world it's happening, but it's annoying to say the least.
[Nexus 6P Q&A, Help & Troubleshooting] jeebuspwnz:
I'm glad mine isn't that annoying. Since this began for me when 6.0.1 came out, mine goes to HSPA after reboot but always moves to LTE after ~2 minutes. After that I'm fine staying on LTE until the next reboot. Switching APNs, toggling airplane mode...none of that makes a difference for me during that 2 minute period.
[Nexus 6P Q&A, Help & Troubleshooting] wooddale:
I'm on Verizon the bug is here but not Quite like you guys. I was on 6.0.1 but went back to 6.0. The bug or whatever is on 6.0 as well on Verizon any way. Signal strength definitely is the reason the N6p doesnt switch well on 6.0 but even worse on 6.0.1. Seems like even if it grabs LTE it won't give it up I can hold 4G at 137 db LTE stops working at 120 db but it still stays connected making the phone useless data wise. I'm in a crap signal area so its good for testing. Even when I get in a strong signal area it seems to hold on 1X or 3G even when I no there is strong LTE. I also have a N6 which has none of the above problems. How are some of you other guys problems on Verizon? Thanks
[Nexus 6P Q&A, Help & Troubleshooting] 318sugarhill:
I haven't really commented on this issue as I'm not sure what my phone does is the same.as anyone else... But I definitely have data issues. On boot it's fine... Wifi or LTE (I'm on Verizon). Sometimes my phone will just stop receiving data until I put it in airplane mode and then off. It doesn't matter if I'm on the VZW network or wifi. I got the 6.01 update on Dec 10th and that's when the issue started happening. I can say the radio is MUCH worse since the update. I got the best service I ever had before the update. Now I'm back on party with what I got back when I used the Galaxy S4.
[Nexus 6P Q&A, Help & Troubleshooting] wooddale:
WiFi is a whole different animal if its doing it on WiFi something is wrong call Google support see what they have to say.
[Nexus 6P Q&A, Help & Troubleshooting] mistermojorizin:
Verizon here.

on 6.0, there was one time when it stayed on 3g when LTE was available, otherwise, it was working fine and I was very happy.

on 6.0.1, it boots without LTE and cannot be forced to LTE without switching the radio on and off (weather that be by soft reboot, airplane mode, or toggling radio off in the secret phone menu). Once it gets LTE, it's fine. I've noticed once it switches to XLTE the signal drops down to around -109 in some places, but I'm glad it holds it and doesn't drop to regular LTE or 3g. Once in a while, I do notice the situation I was having on 6.0 (described earlier in this post) where it will stay on 3g even when LTE becomes available, but that's so rare that it doesn't bother me. What bothers me is the inability to boot and reliably connect to LTE without having to switch the radio on and off.
[Nexus 6P Q&A, Help & Troubleshooting] wooddale:
I come from IL I'm in Wi now I had Xlte in IL I don't think I have it here lucky I get 3G sometimes. I'm on a network extender now so I can get calls. You must be in a strong SIG area like I say I have to toggle airplane almost always on 6.0 it will grab lte going into town almost always. I'm gonna stick on 6.0 for awhile anyway.
[Nexus 6P Q&A, Help & Troubleshooting] mistermojorizin:
i would do the same in your position. but, wow, it seems like it's hard to find a low coverage area https://vzwmap.verizonwireless.com/dotcom/coveragelocator/
[Nexus 6P Q&A, Help & Troubleshooting] wooddale:
Lol you see those little white dots in Wisconsin I'm in one of those. Right were I am there is all kinds of signals I can literally walk from no signal 1x to 3G which is US Cell 3G to the water and I can grab some poor LTE. I'm about 6 miles North or South from a Verizon tower. I just got an amp from a bud hopefully when it warms up I'll be able to draw it in. Don't believe everything Verizon says they lie about there coverage well not really if you read the fine print it says you may not get service but they say you do anyway.
[Nexus 6P Q&A, Help & Troubleshooting] 318sugarhill:
I've thought maybe it had something to do with Doze.... But I give you an example. I got an email tone (gmail) at 11:10 at night and when I opened the email the time stamp showed it was sent at 8:50pm....so over 2 hours before it was received by the phone. Typically gmail is instantaneous on my phone. A lot of times I get notifications while in Facebook that I have no network connection,although my network signal bar says LTE or my wife at home is connected. Happens at work (cell network only) and home (wifi). A quick press of the airplane mode and back gives me full data back.

I can say I don't have any issues connecting to LTE after a reboot like other on here.
[Nexus 6P Q&A, Help & Troubleshooting] MultiKoopa:
I am also having this problem. Nexus 6P on the December 6.0.1 build, on AT&T. I got a brand new sim card from an AT&T store, and that didn't fix the issue, either.

Is there seriously no cause or solution found for this yet? :/

Anybody try the January security patch build of 6.0.1?
[Nexus 6P Q&A, Help & Troubleshooting] nrfitchett4:
Update for me. I flashed back to the M update using Skip's toolkit and did nothing else, not even root, so completely stock. I then let the phone do the OTA itself. Since then I have not had the problems with LTE. I don't know why and I still think there is an issue. I really wonder if the coding for which network to grab has changed. It seems that it will grab HSPA over LTE maybe because of signal strength. I really hope Google gets it worked out. I'm going to stay stock for now since I only used root for a couple of things and can live without it in the short term.

---------- Post added at 04:13 PM ---------- Previous post was at 04:13 PM ----------

Someone had said they did the update and it did help them with this issue. Being stock now, I haven't received the update yet.
[Nexus 6P Q&A, Help & Troubleshooting] dwertz:
So I have been having issues with 6.0.1 LTE on Verizon since day one. I have tried which I thought was everything. Today I used the MDB08M 6.0 factory image using the flash-all. I rebooted the phone not rooted and stock recovery, connected to wifi and was prompted 6.0.1 OTA update so I let it download and install, after reboot I got Jan security patch update, so I updated that. I checked signal and still have LTE which is good, before I had to toggle airplane mode. I then installed Pure Nexus by Wiping System, Data, Cache, Dalvik, then installed the latest Pure Nexus, then Vendor, then Gapps and rebooted. This is so far the first time I have not had an issue with LTE. I dont even have to toggle airplane mode.

Can someone that is bored confirm this?
[Nexus 6P Q&A, Help & Troubleshooting] wooddale:
Guys have done this before yes it does work but won't last. Let us know if it sticks.
[Nexus 6P Q&A, Help & Troubleshooting] marvinmadman:
I'm completely stock on Verizon. No problems what so ever with signal strength. Note 3 was horrible with 3g switches and weak LTE reception overall. I've used up 20gb in 3 days with my Nexus 6p on LTE. I get better signal than my Mifi that runs my whole house internet. So I no longer use WiFi in my house. I have 4 unlimited lines with Verizon and I really almost switched after they hit me with the extra $20 per line, now I'm just gonna use as much data as I possibly can. Last month my Mifi finished up with 217gb. I love it
[Nexus 6P Q&A, Help & Troubleshooting] y2jdmbfan:
If I flash the latest stock 6.0 image from Google, is the phone returned to it's out of box brand new state? Not sure if there is such a thing as a re-locked bootloader notification like on HTC phones or not.

Thanks!
[Nexus 6P Q&A, Help & Troubleshooting] davo04:
I am on the January mmb29p build on the Telstra network here in Australia & still having the same problem with occasional back to 3g when switching data on.
[Nexus 6P Q&A, Help & Troubleshooting] LuckyLukey:
Try here :

http://xdaforums.com/showthread.php?p=64816127
[Nexus 6P Q&A, Help & Troubleshooting] mistermojorizin:
First 2 reboots it defaulted to LTE and I thought the problem was solved, on the third reboot it defaulted to 3g. Heartbreaking!
[Nexus 6P Q&A, Help & Troubleshooting] rose10:
Can someone upload a radio ver. that works good for Nexus 5 6.0.1 (for Europe carriers)

After I updated my Nexus to 6.0.1 I can't get a signal at all & can't register to any carrier.

Thanks
[Nexus 6P Q&A, Help & Troubleshooting] fix-this!:
My lte sucks now on at&t go plan on my nexus 6p. Super slow lte and mostly on hspa+. This needs to be fixed before I return my nexus.
[Nexus 6P Q&A, Help & Troubleshooting] fix-this!:
So what radio is best to fix the lte issies on at&t? Guess I could fastboot flash stock and totally rewipe this weekend.
[Nexus 6P Q&A, Help & Troubleshooting] wooddale:
There is no fix for it Google problem and I don't care what anybody says its a problem and Google needs to fixor go back to 6.0
[Nexus 6P Q&A, Help & Troubleshooting] biscuitownz:
Mine was fine until the January security update. After that I have to toggle the preferred network type to get it to connect.
[Nexus 6P Q&A, Help & Troubleshooting] iowabowtech:
Same problem here. On Verizon and i experienced this on stock, RR, Pure Nexus and others. Only fix is to cycle the radio by rebooting, airplane mode or stop/start radio from hidden menu. That "fix" doesn't last but it'll bring me back up to full bars for awhile in an area I always get full bars on multiple devices of varying manufacturers. Added a comment to the posted bug report.