Hi guys
I've tried researching this issue from time to time but have never been able to find any definitive information. A couple of threads around the traps detailing similar problems, but that's it. Anyway, what happens is this: the phone will be showing a couple of bars or whatever, but there actually isn't any signal at all. Calls can be initiated, but wont actually connect, and then can't be ended either. The only way to resolve the issue is to reboot the phone, or activate airplane mode and then deactivate it again (which tends to take considerably longer than a simple reboot). I'm calling it a radio crash because that's what it seems to be, but I could of course be wrong about what is actually going on under the hood.
This post is basically part of an effort to diagnose the problem before I decide what this phone's future will be (have a new, different model on the way now).
Thanks for reading, and any advice/information will be much appreciated
It sounds as if you have a defective phone, or it could be you carrier.
Have you tried a different phone.
Do other people have the same problem with that carrier
You could also think of it like this, carrier problem, you can connect to wifi if it doesnt have internet connection, it still can show full bars but nothing will load
Sent from my MB865 using xda app-developers app
I have an SGS3 now, with the same SIM in it (cut down to micro of course). Average signal strength (as reported by third party apps that don't pad) is about the same, but no dropouts at all (as monitored and reported by the No Signal Alert app). However the SGS3 supports both my carrier frequencies, and the Atrix 2 doesn't. Having said that, the SGS3 seems to stay on 2100MHz all the time anyway where I am.
I've also put a different SIM in my Atrix 2, from a network that is more compatible (850/2100), and although the dropouts are less frequent, they are still occurring. However, I haven't had a "radio driver crash" in over a week. The dropouts have only been momentary too, lasting no more than a few seconds, 1-3 times per day (mostly in the afternoon).
I'm also planning to charge the phone up and leave it at a couple of other locations for a day or two while continuing to monitor signal interruptions. Should be interesting.
Thanks for the reply
Just a quick update: left the phone at another location for a few days where the average signal strength is stronger, and not a single dropout was logged during that time. In certain areas this phone is obviously not as good as some others at maintaining a signal, but I don't think the dropouts themselves are indicative of a fault given this new information.
The previous instances of radio lockups/crashes are still haunting me a little, but this strange phenomenon is still yet to occur again. I also forgot to mention that I'd previously done a full restoration of the official 4.0.4 ICS release in order to return to the phone completely to stock, which might have something to do with that. Previously it was rooted, with only some minor modifications, but I guess it's not beyond the realm of possibility.
Wait i have an idea
Send me your apn data.
Motorola doesnt have the best antennas either.
Also does it crash at a certain time after it is turned on or is it random?
Sent from my SOUL
Related
Title - meant to say randomly lose service and have to reboot
I have only had this happen about 3 times since owning the phone (since two weeks after launch). Occasionally, my phone will altogether lose service and display the blue circle with a slash through it, and I have to reboot the phone to regain service. This happens in an area where I have signal usually, when this happens. Does anyone else have this issue?
I had a problem similar to this last night/this morning. I didn't make any changes/mods to the phone either...
Phone was on the charger last night and when I woke up this morning I noticed I didn't have any emails. I still had the 3G icon and 2 signal bars, but anything I would try to do using internet connectivity wouldn't work (checking mail, navigating to google.com, etc.). I just shrugged it off since this has been the first time it happened.
For what it's worth, I'm running JF6 with UnleashTheBeast and the circle battery meter thing...
RE: Network loss, etc.
I've had issues like this from day one. From my testing, it seems to be related to the radios. (Both wifi and 3g.)
Stock was horrid for me, but then again, I live/work in a place with really crappy radio reception. It was tough to tell if the 3g or voice network service losses were just "the location" or something with the phone. But the fact that it's doing it with WIFI when I'm 3 feet from my AP, and no other devices are having issues is telling. Things have stabilized a bit with one of the SRE 1.2 OC builds.
That, and I'm now having intermittent sound issues too. (Can't play ringtones for a few minutes, then I can, then I can't, etc. )
I'm actually starting to suspect it's relating to the blocking filesystem lag. Almost as if some app is just killing the FS. I'll keep investigating. But it's good to know I'm not the only user who is seing service drops in strange ways.
I'm having similar issues with data connection, and i'm completely stock at the moment. My coverage is great so it just doesn't make sense.
Sent from my SAMSUNG-SGH-I897 using XDA App
Yeah, it's completely random when it happens, and it has happened two out of three times in an area where I have service...
I have been having really bad connectivity recently. I have been having issues sending text messages, having slow data speeds, and really flaky reception. And all of these issues in places where I normally have no issues at all, in fact, I dont think I have ever really had issues like this before. Even when the phone says I have signal it still has issues some times. Being outdoors I dont seem to have issues sending text messages, but I still have poor data speeds. However, as soon as I went inside I had almost no reception to absolutely no reception at all. I know some of this could just be related to AT&T towers but my girlfriend is on AT&T too and hasn't had any issues sending messages, she has a "dumb phone" though if that matters. Other things I noticed as far as signal, it would sometimes have data connections shown, but sometimes it wouldn't show anything and under about phone it would say "mobile network is not connected".
I was on 11/4 CM10 when I started having the issues. Tried flashing a couple new MTD modems, checked APN settings, rebooted, wiped cache, airplane mode toggle, but none of that fixed anything. I did a one-click restore back to GB and wiped everything on my phone, internal SD too, then re-downloaded the 11/4 build and reflashed that. Everything seemed to be better for a while but then I noticed that I was having poor data speeds, issues sending messages, and poor signal again. Now I one-clicked back to stock GB again and didn't change anything and only downloaded a couple of apps that I use often to see if it was CM10 that was the issue, but once again I am finding myself with problems sending messages and very poor data speeds. Also, I notice sometimes that wifi connections seems to get dropped during usage and even though it still is connected it gives me errors.
At this point I'm not really sure what I should start looking into. Is is possible that the internal antenna is flaking out or got fried somehow? Or is it possible that it is on AT&T's side? That option seems most unlikely. I haven't dropped my phone or done anything recently that would seem like it would cause my phone to have these issues. Is there a way to test my phone to see if there is something internally messed up? Should I try getting a new sim? Anything else I can do to try and troubleshoot stuff? Any logs or anything you guys need to give me better ideas?
Thanks in advanced!
Edit: Well, in the process now of doing another full return to stock using GTG's method now. See if that makes any difference by the time I get cm10 installed again.
Edit 2: Decided to call the local AT&T store and apparently there had been a couple reports of connection problems but the lady seem a little surprised by how much I seemed to be effected. We'll see if they get that fixed soon and if that fixes my problems. Still having issues with wifi though...
Any ideas anyone? I'm don't know if the att tower is really sucking that much or if it's my phone. Beginning to think it's my phone more and more. Any suggestions please? I can't get an upgrade for another 2 months and this is getting really annoying not being able to use my phone as a phone..
Sent from my SGH-I997 using xda app-developers app
Bumping this thread cause its happening again.
It did seem to be slightly related to the AT&T towers being down because it went away after a day or so after talking to the local store. However, they said the outage lasted only 3 hours and I had issues for a couple of days.
Anyways, yesterday I started having these exact same issues, called AT&T and they said towers seem fine. Asked them about it maybe being my SIM card and they said that 98% likely it wasn't my SIM card. I might go make them replace my SIM card since we pay them obscene amounts of money each month. As far as the phone, it still has Scotts 11/4 CM10 build with the 11/18 kernel patch. Only thing that really changed in the phone physically was I just purchased a 32gb class 10 memory card. The one thing that makes me think it might be my SIM card is there are darker spots in a couple of spots on the gold plating where it looks like it makes the contacts.
Still looking for advice though.
TLDR; super flaky reception, I go indoors in most places and I loose all connectivity. I normally have completely fine coverage everywhere. No issues up until about 3 weeks ago.
I have had ATT for 10 years and have never had good reception indoors. Only reason I am still with them is Verizon is practically a dead zone were I live.
I ran Scott's CM10 and now Liquidsmooth and didn't notice any increase or decrease in signal strength.
Sent from my SGH-I997 using xda premium
The thing is I've been running cm10 of some variety more or less since it's early life and I haven't had issues. It's just on these certain days for certain reasons I have no connectivity in certain places. Most every other days I have no problem getting an H+ data signal and no problem sending or receiving messages in these exact same spots.
I just don't understand these sudden random losses of connection.
Edit: What do you know. Phone is back to normal functioning today. This is wierd...
Sent from my SGH-I997 using xda app-developers app
Every so often my M8 will basically become disconnected from the network. This NORMALLY appears when I'm in a low coverage zone, and it's as if my phone just doesn't want to reconnect when I get back into a higher coverage area.
For instance at my gym, I frequently get a weak signal, but it's usually 4G. Sometimes it'll drop to 3G, and then sometimes when I get back into an area of the gym that has 4G coverage my phone will say it's still on 3G. However, there's actually no connectivity at all, and I need to either reboot or toggle airplane mode to get a connection again.
Sometimes (at least 2-3 times in the last week) it happened while, at least to the best of my knowledge, I was in a 4G area (though with weak coverage) the entire time. Again I fixed it each time by toggling airplane.
Has anyone else seen an issue like this? It's frustrating as hell. And more importantly has anyone heard of a fix for this?
sfreemanoh said:
Every so often my M8 will basically become disconnected from the network. This NORMALLY appears when I'm in a low coverage zone, and it's as if my phone just doesn't want to reconnect when I get back into a higher coverage area.
For instance at my gym, I frequently get a weak signal, but it's usually 4G. Sometimes it'll drop to 3G, and then sometimes when I get back into an area of the gym that has 4G coverage my phone will say it's still on 3G. However, there's actually no connectivity at all, and I need to either reboot or toggle airplane mode to get a connection again.
Sometimes (at least 2-3 times in the last week) it happened while, at least to the best of my knowledge, I was in a 4G area (though with weak coverage) the entire time. Again I fixed it each time by toggling airplane.
Has anyone else seen an issue like this? It's frustrating as hell. And more importantly has anyone heard of a fix for this?
Click to expand...
Click to collapse
Yep, actually I had a thread about this a while back; I tried just about everything (other ROMs, new sim cards, factory resets, the whole shebang) and my only solution so far (if you intend on keeping your current phone) is to completely unroot my phone, along with removing all root-related applications (namely Xposed). It still happens from time to time, but a lot less frequently then when rooted and running Xposed modules. I have a new phone coming in today from Verizon, so hopefully that unit will not have any of these issues... I still am not entirely sure what causes it, though it is definitely exacerbated by Xposed. Hopefully some of this helps? If you have any further questions feel free to ask, either through PM or this here thread.
Sent from my HTC6525LVW using XDA Premium 4 mobile app
Sevinex said:
Yep, actually I had a thread about this a while back; I tried just about everything (other ROMs, new sim cards, factory resets, the whole shebang) and my only solution so far (if you intend on keeping your current phone) is to completely unroot my phone, along with removing all root-related applications (namely Xposed). It still happens from time to time, but a lot less frequently then when rooted and running Xposed modules. I have a new phone coming in today from Verizon, so hopefully that unit will not have any of these issues... I still am not entirely sure what causes it, though it is definitely exacerbated by Xposed. Hopefully some of this helps? If you have any further questions feel free to ask, either through PM or this here thread.
Sent from my HTC6525LVW using XDA Premium 4 mobile app
Click to expand...
Click to collapse
I am having same did getting new phone help? I think its just crappy radios myself nothing to do with root exposed or anything.
wooddale said:
I am having same did getting new phone help? I think its just crappy radios myself nothing to do with root exposed or anything.
Click to expand...
Click to collapse
I have a new phone now, and so far I haven't experienced any data connectivity issues. This morning I did notice that my SMS were not sending properly, but that issue has since faded away, so hopefully it was Verizon network based... Anyways, I will try reinstalling Xposed and a couple modules later today (likely Snapshare and the Sense 6 Toolbox) and will report back sometime tomorrow or the next on how it goes. Fingers crossed...
Sent from my HTC6525LVW using XDA Premium 4 mobile app
Sevinex said:
I have a new phone now, and so far I haven't experienced any data connectivity issues. This morning I did notice that my SMS were not sending properly, but that issue has since faded away, so hopefully it was Verizon network based... Anyways, I will try reinstalling Xposed and a couple modules later today (likely Snapshare and the Sense 6 Toolbox) and will report back sometime tomorrow or the next on how it goes. Fingers crossed...
Sent from my HTC6525LVW using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Thanks keep us informed.
wooddale said:
Thanks keep us informed.
Click to expand...
Click to collapse
sfreemanoh said:
Every so often my M8 will basically become disconnected from the network. This NORMALLY appears when I'm in a low coverage zone, and it's as if my phone just doesn't want to reconnect when I get back into a higher coverage area.
For instance at my gym, I frequently get a weak signal, but it's usually 4G. Sometimes it'll drop to 3G, and then sometimes when I get back into an area of the gym that has 4G coverage my phone will say it's still on 3G. However, there's actually no connectivity at all, and I need to either reboot or toggle airplane mode to get a connection again.
Sometimes (at least 2-3 times in the last week) it happened while, at least to the best of my knowledge, I was in a 4G area (though with weak coverage) the entire time. Again I fixed it each time by toggling airplane.
Has anyone else seen an issue like this? It's frustrating as hell. And more importantly has anyone heard of a fix for this?
Click to expand...
Click to collapse
Lol, so after installing Xposed, I suddenly started having issues maintaining a solid 4G connection; 3G works fine, just whenever I do manage to connect to 4G I am unable to use any data (says I am connected to the mobile network, but I do not get any upload or download data movement). Even after removing Xposed and all associated modules, I am still experiencing this problems. I am going in today/Monday to get a new SIM card (hopefully this is what is causing my issues) but goddamn I just cannot seem to catch a break in terms of my phones' data connection. If the above doesn't work I may have to send for another phone, though after having now received three replacements this entire process is getting a little irksome... I really do love this phone, but it seems as if it is my M8 is rejecting my love from every angle.
UPDATE: The new SIM didn't do anything, I still am having 4G issues, so another phone it is...
it's not just your phone....
Sevinex said:
Lol, so after installing Xposed, I suddenly started having issues maintaining a solid 4G connection; 3G works fine, just whenever I do manage to connect to 4G I am unable to use any data (says I am connected to the mobile network, but I do not get any upload or download data movement). Even after removing Xposed and all associated modules, I am still experiencing this problems. I am going in today/Monday to get a new SIM card (hopefully this is what is causing my issues) but goddamn I just cannot seem to catch a break in terms of my phones' data connection. If the above doesn't work I may have to send for another phone, though after having now received three replacements this entire process is getting a little irksome... I really do love this phone, but it seems as if it is my M8 is rejecting my love from every angle.
UPDATE: The new SIM didn't do anything, I still am having 4G issues, so another phone it is...
Click to expand...
Click to collapse
a lot of feedback on the web across multiple carriers of the poor lte signal retention on this phone.....this is starting to sound like a hardware defect or a major "radio" software glitch.
biswasd said:
a lot of feedback on the web across multiple carriers of the poor lte signal retention on this phone.....this is starting to sound like a hardware defect or a major "radio" software glitch.
Click to expand...
Click to collapse
I dumped mine could not handle it anymore get rid of it before you loose any more money. I have had a lot of phones when there bad from the start they don't usually get any better. The Droid Bionic being the only exception.
sfreemanoh said:
Every so often my M8 will basically become disconnected from the network. This NORMALLY appears when I'm in a low coverage zone, and it's as if my phone just doesn't want to reconnect when I get back into a higher coverage area.
For instance at my gym, I frequently get a weak signal, but it's usually 4G. Sometimes it'll drop to 3G, and then sometimes when I get back into an area of the gym that has 4G coverage my phone will say it's still on 3G. However, there's actually no connectivity at all, and I need to either reboot or toggle airplane mode to get a connection again.
Sometimes (at least 2-3 times in the last week) it happened while, at least to the best of my knowledge, I was in a 4G area (though with weak coverage) the entire time. Again I fixed it each time by toggling airplane.
Has anyone else seen an issue like this? It's frustrating as hell. And more importantly has anyone heard of a fix for this?
Click to expand...
Click to collapse
I had the same problem with my new M8 when travelling from/to areas with low or no data coverage back to areas where I knew there was a LTE signal. Only toggling Airplane Mode would make the data reconnect. That problem was solved for me with a new sim card.
I also had very bad data connectivity at home in a major southern California city (best was -105 dBm) whereas I got up to -83 dBm in some rural town in Arizona.
Read trook's posts #34 and up here: http://forum.xda-developers.com/showthread.php?p=53838257
Some of these problems may be connected to the new data service VZW is rolling out.
I would wait a few weeks before ditiching this phone. 'Cause it rocks!!!
bull**** phone
berndblb said:
I had the same problem with my new M8 when travelling from/to areas with low or no data coverage back to areas where I knew there was a LTE signal. Only toggling Airplane Mode would make the data reconnect. That problem was solved for me with a new sim card.
I also had very bad data connectivity at home in a major southern California city (best was -105 dBm) whereas I got up to -83 dBm in some rural town in Arizona.
Read trook's posts #34 and up here: http://forum.xda-developers.com/showthread.php?p=53838257
Some of these problems may be connected to the new data service VZW is rolling out.
I would wait a few weeks before ditiching this phone. 'Cause it rocks!!!
Click to expand...
Click to collapse
it has nothing to do with the AWS rollout - i have a Verizon Galaxy S5 sitting right next to my M8 ---- guess what - consistent data speeds on the s5 (15 mbs down)......on the m8 (3-4mbs down) - and the data flucutates and in the signal meter , I'm getting about -6db less on the M8 than the s5.
trust me, i so desperately want to keep this phone, b/c quite frankly, i hate the amoled screen on the s5, but alas, i cant keep a phone that doesn't work well
biswasd said:
it has nothing to do with the AWS rollout - i have a Verizon Galaxy S5 sitting right next to my M8 ---- guess what - consistent data speeds on the s5 (15 mbs down)......on the m8 (3-4mbs down) - and the data flucutates and in the signal meter , I'm getting about -6db less on the M8 than the s5.
trust me, i so desperately want to keep this phone, b/c quite frankly, i hate the amoled screen on the s5, but alas, i cant keep a phone that doesn't work well
Click to expand...
Click to collapse
Did you have to do that?! You just ruined my evening! That's really not what I wanted to hear!
The cold hard truth - aaaarghhh. [emoji24]
Now I have to re-think this purchase 'cause I use my phone 80% for data related functions!
But thanks anyway for posting. Even if it hurt...
cold hard facts
berndblb said:
Did you have to do that?! You just ruined my evening! That's really not what I wanted to hear!
The cold hard truth - aaaarghhh. [emoji24]
Now I have to re-think this purchase 'cause I use my phone 80% for data related functions!
But thanks anyway for posting. Even if it hurt...
Click to expand...
Click to collapse
yes - sorry bro - i'm quite disappointed by what i am seeing with my own two eyes as well as all the others across the US and the rest of the world who are experiencing the SAME symptoms. so this is not a verizon network issue --
me thinks its a faulty radio which is causing bad handoffs between 3g and 4g (LTE). once the phone drops down to 3g, it never regains 4g signal for some reason. also, there is the issue of the constant signal fluctuations even when the phone is on LTE...so who knows. maybe combo of bad radio and poor quality antenna module.
i'm not a phone engineer but i have enough common sense and knowledge about phones to know a lemon when i see one......so, yup, i'm keeping the s5 and return the m8 tomorrow under the 14 day guarantee from verizon. shame....
biswasd said:
yes - sorry bro - i'm quite disappointed by what i am seeing with my own two eyes as well as all the others across the US and the rest of the world who are experiencing the SAME symptoms. so this is not a verizon network issue --
me thinks its a faulty radio which is causing bad handoffs between 3g and 4g (LTE). once the phone drops down to 3g, it never regains 4g signal for some reason. also, there is the issue of the constant signal fluctuations even when the phone is on LTE...so who knows. maybe combo of bad radio and poor quality antenna module.
i'm not a phone engineer but i have enough common sense and knowledge about phones to know a lemon when i see one......so, yup, i'm keeping the s5 and return the m8 tomorrow under the 14 day guarantee from verizon. shame....
Click to expand...
Click to collapse
To tell the truth I have been reading about the same issue on the general M8 forum - probably just didn't want to make the connection.... So thanks for opening my eyes.
I'm hoping for bad radio software that may get fixed with some future update (although my 6th sense tells me it's the bad antenna module....)
Too late for me for a clean exchange. Gonna have to read the Squaretrade fine print.....
This has been happening since the first day I got the One Plus One. I was hoping it was a software issue, but I am on the latest and still no fix has been implemented. It seems that I am not the only one with this issue, however there are many that do not have this problem at all.
There's a page on it: https://jira.cyanogenmod.org/browse/BACON-228
(Copied and pasted to OPO Support)
I don't know if there's something wrong with my phone but it's been happening from Day 1 and I'm fed up that no firmware has fixed anything. I began with Rogers in Canada, and for the most part it works but it would stop the upload/download on the top right for a bit then start again. I switched to Wind Mobile and still does the same thing. I changed the SIM cards, did hard resets, etc, and still nothing will fix it. I have a feeling I have a defective chip because others have reported no issues. It does the same on LTE or 3G. I can never watch a full YouTube clip or anything. The issue happens when I roam as well.
I also did the *#*#4636*#*# and played with different modes but it did not fix the issue. I also have random bar jumps. This happens every few minutes so I literally browse for a minute, data stops for a minute, browse for a minute, data drops for a minute, etc.
I get exactly the same, in the UK on EE network. The data just seems to freeze for no reason, totally independent from signal strength etc.
SimonTS said:
I get exactly the same, in the UK on EE network. The data just seems to freeze for no reason, totally independent from signal strength etc.
Click to expand...
Click to collapse
I'm on Wind, and haven't noticed any issues, the speed is slow but that's a carrier-side issue since they only use 3g networks not 4g/lte. Um, there was another thread that had a couple different modems, perhaps you might see some success in stability by flashing those? It's either a issue with the modem, or the radio chip, but logcats would be helpful in determining and pinpointing the problems. (Just run the app catlog, and recreate your issue, then dump it and paste it to JIRA so the devs could have a better look, and as well as here, so perhaps someone could help/suggest something).
What's your current modem version?
Hello,
I have a problem with my OPO that has been going on for months now (I suspect it's hardware based? but not sure)
My opo can always connect to 2g network
My opo can only connect for a limited time to 3G/4G networks. If i change the network type, I get internet alright for about an hour or so. After some time or event (can't find a pattern), the phone is suddenly disconnected from mobile internet (even though data is ON), but my reception indicator is full. I also cannot place calls or get called: when I try calling, I get either a textbox "network unavailable" or the call attempt just ends on it's own without result. I'll call this state "fake 4g"
Here's what I have already tried:
-reboot, flash other rom, factory reset
-downgrade and upgrade TWRP back again
-messing around with 4636 (but i think i haven't tried switching to US band and back to EU - i'm from europe). Note: the interface shows precisely one cell tower when i'm connected to fake 4g
-going back full stock (flashing a version of cm prior to YOGPAS1N0) in order to update the radio. I even installed oxygen at some point
-pulling a logcat. However, this problem (other than the fact that i have only have a basic grasp of IT) is that I cannot exactly pinpoint WHEN fake 4g occurred without looking at the screen/placing a call. I managed to determine fake 4g came up between 4:55 and 5:46, which is still a heck of a logcat. In order to generate some logcat chatter, i've placed a few unsuccessful calls during fake 4g period (i've pinpointed those logs)
Does anyone have any idea as to the cause of this bug (not entirely sure it's hardware based because it works, well, sometimes...)? Or can anyone maybe tell me what to look for in that 50 minute logcat? I guess I can always have another logcat run in the weekend and check every 5 mins until i can spot fake 4g happening.
Note: I haven't opened it to check whether the antenna is plugged or anything (not that i would see much, i think). Anyway, i can always do it if need be.
Thanks in advance
I have been having a similar problem, the LTE range keeps fluctuating from zero to 3/4th to full from time to time, even when the phone is lying stable. Range appears well when on 3g. It isn't sim card based as iv'e tried various sim ,phone combinations.
Also i have noticed many topics appearing in the past few months regarding network issues ... some kind of a pattern ?
Ah yeah I forgot to mention that I tried the simswap trick too, to no avail.
So you're suggesting the hardware antenna might be of poor quality, that might be the case. If so, I suppose the antenna cannot be easily changed (ie incorporated in mobo or whatever).
Does anyone know whether antennae are prone to fail in general?
Loladin0 said:
Ah yeah I forgot to mention that I tried the simswap trick too, to no avail.
So you're suggesting the hardware antenna might be of poor quality, that might be the case. If so, I suppose the antenna cannot be easily changed (ie incorporated in mobo or whatever).
Does anyone know whether antennae are prone to fail in general?
Click to expand...
Click to collapse
Nope.If there hasn't been anything that could damage the hardware,no.
Have you tried changing firmwares?
https://forum.xda-developers.com/oneplus-one/general/firmware-modem-oneplus-one-t3462214
Even i am facing the similar kind of problem and posted my question here https://forum.xda-developers.com/oneplus-one/help/internet-issues-intermittently-unable-t3714911. One more thing to note is if you try tethering with laptop the internet works just fine (it happens with my device) . Even i have tried many combination with 4636 interface but i really can't understand the reason behind it.
Flash latest modem firmware... Then *#*#4636#*#* ..then on phone change signal to 3g only or LTE only..
Helped me from losing signal