Develop Bugs

TMobile US Random Reboots

So I'm having an issue that is starting to drive me nuts. I have 2 Defys. One is my work phone, one is personal. My work one has been fine for 2.5 months. This prompted me to get one for personal use. However within the last week I have started having issues with both of them randomly rebooting. Always within 10-15 seconds of each other. Work one is original rom, factory reset, unrooted. Personal one is rooted, .360 update, and a bunch of apps. On my to work and back home I can always get them to do this. I get a beep, no service notification, and then approx 2 minutes later they reboot. during this time they are extremely unresponsive. Already called TMobile thinking it was a tower issue, but all checks out well on their end. It's driving me nuts. Has anybody had this issue, or know how to solve it. I don't think its the phones. On wifi they run fine all day long.

Have you tried the newer uicc SIM? Was told by the pda team I should switch over. I told them I was experiencing a reception issue. Since both your phones have gone nuts at about the same time it's either service or aliens. You might try one sim swap and see if it helps.

Both of them are brand new sims right from the box. From what I've gathered they already are the newer sims.

Let me share my experience about random reboots. I had also put it up in here but didnt get much response.
I narrowed down after a lot of experimenting that the reboot happens because of one issue - "The phone tries to reconnect to data network while there is very low signal and suddenly goes into a boot"
It somehow boggled me for months on how this could happen only to me when none of the users in this forum had anything like that. I changed the phone too. But the reboot continues. I got an app called Shutupbattery which can automatically switch off data network when network strength is below a certain limit (i set it at -102dbm). This seems to have slightly impacted the rebooting process. I see some improvement but also not satisfied with this app. It still does not completely shut off the data network on the cut off value and hence the phone does manage to reboot again.
I am trying a few combinations of values and seeing if I can arrive at a conclusion. Let me know if this was useful. For me this is something like a deal breaker and I am feeling of giving up the phone or changing the service provider.

I can tell you for a fact that it has to do with signal strength and data. However 4 days after I discussed this with TMobile Tier 2 support, they dispatched techs to the tower and since then...no more issues. The few other towers I have had issues with I've done the same thing and all of a sudden the problem disappears. I've been very happy with the support. Better than ATT ever did. I suspect it has to do with their implementation of 4G. I've noticed when it does this I get a momentary connection to HSPA before the phone drops back to UMTS then GPRS. You can get to this menu bu going to *#*#4636#*#* . Otherwise call Tmobile.

Data connectivity issues

Anyone else having connectivity issues with their one x? If the phone loses connection for any length of time, it will not reconnect and I'll have to reboot the phone for the mobile network to reconnect, which is probably every 15 minutes or so.
I skimmed a couple pages, couldn't find anything, but I've found a couple other forums with people posting about this issue. it's an ATT one x.
Hoping there's a fix for this as every ATT store within 50 miles is out of stock on both colors and customer care won't do a damn thing for me but tell me "go back to the store." Bull**** if you ask me, broken ass phone and I'm stuck with it. Really?
I was hoping there was a fix, even if I have to unlock the bootloader and root.

Of all the issues that people have been complaining about since the phone was released that's not one that I've heard mentioned.
However, it's probably worth you asking the question over in the AT&T One X section, as this is section is for discussion about the international (Tegra 3) version and your problem might be something specific to the One XL hardware.

im having exactly the same issue. works fine when staying constantly in coverage but when i lose the connection going through the subway tunnels it doesnt reconnect. searching all networks fails even! its like the radio switches off.
i got it to turn back on by turning it into plane mode (which took ages and look like it had frozen but eventually ticked over after about 30 seconds). once i turned plane mode off it asked me for my sim pin again, then after that it reconnected normally.
which made me think... that shouldnt happen and has never happened on any of my other phones. so tomorrow morning im going to try going through the tunnel after turning my sim pin off and see if that fixes the problem. maybe when the radio disconnects it tries to reauth to the sim but but the UI doesnt prompt for a pin and it stays off... worth a shot because i havent seen anything else that seems to apply to the international version, only the LTE version and needing to select GSM/WCDMA instead of LTE (which this phone is defaulted on already).
then again this would only make sense if the poster has a sim pin on as well do you?

I'm having data issues with 3g and WiFi. Most of the time is fast and reliable, other times is just does not connect.
Stock HT24 international one x.
It's my only issue with the phone but store has said I can return when ht25 stock is in if I like.
Sent from my HTC One X using XDA

I did not realize there was a forum for the ATT version of the One x. Sorry for the mispost, but no, airplane mode does not fix the issue, it needs a hard reboot. What I do for the meantime is turn data connection off when im not using it, then turn it back on when I need it. Annoying to say the least, but.... whatever.

I also have connection issues on the mobil network. Very often it drops out, and wont reconnect untill im very close to an antenna. Its a big problem, as it can't connect from my home +/- 100m, and i live right in the center. I don't have this problem with other phones, so i think its a HTC One X problem, even thou the phone company has a weak signal in my area.

I can confirm that upgrading to 1.29.401.11 fixed this issue for me.
I did try unlocking the SIM card but that didnt do anything. Flight mode did work for me but that was just annoying and I missed a few calls and SMSs being in elevators and not realising it had dropped as well.
But anyway, I read that the .11 firmware had a radio update so perhaps that fixed it. If you dont have the Intl English version like me (i.e. 401) you will need to wait until your localised version is updated.

[Q] Text messages not recieved until I press the "Power" button?

On my HTC One X (Orange Android 4.0.3, HTC Sence 4.0 Software 1.29.061.11) I have a common problem where I don't get a text message until I press the "Power" button at the top of the phone. As soon as I do, the phone beeps and vibrates, and displays the message on screen. The text message will have a time stamp of many minutes before (maybe 15/30 minutes). If I don't keep checking my phone, I don't receive messages!
Its like the phone is in a deep sleep and isn't receiving messages.
Has anyone else had this problem?

pee_cee said:
On my HTC One X (Orange Android 4.0.3, HTC Sence 4.0 Software 1.29.061.11) I have a common problem where I don't get a text message until I press the "Power" button at the top of the phone. As soon as I do, the phone beeps and vibrates, and displays the message on screen. The text message will have a time stamp of many minutes before (maybe 15/30 minutes). If I don't keep checking my phone, I don't receive messages!
Its like the phone is in a deep sleep and isn't receiving messages.
Has anyone else had this problem?
Click to expand...
Click to collapse
It may have something to do with HTC SmartSync.
Yes I know it is only supposed to between the hours of 12(Midnight) and 7AM, but it may not be de-activating for you.
Also is it constantly, or intermittent?

i noticed this before, but havent since the 2.17 update - maybe this is what fixes it..

Are you using wifi and set it to turn off while your screen is off? That might be problem.

kaz89 said:
Are you using wifi and set it to turn off while your screen is off? That might be problem.
Click to expand...
Click to collapse
Wifi isn't responsible for the text messages assuming it's sms
Sent from my HTC One X using xda app-developers app

Yes its SMS message, not on Wifi.
I don't recall ever setting up SmartSync, can you advise what to check/disable?

pee_cee said:
Yes its SMS message, not on Wifi.
I don't recall ever setting up SmartSync, can you advise what to check/disable?
Click to expand...
Click to collapse
No, SmartSync is enabled by default, HTC though they were being clever but it has cause no end of issue.
There was an app that you could use to disable it, but it has been removed from the Play Store
Im sorry I cannot help you further but I can almost guarantee this will be your cause.

Wilks3y said:
No, SmartSync is enabled by default, HTC though they were being clever but it has cause no end of issue.
There was an app that you could use to disable it, but it has been removed from the Play Store
Im sorry I cannot help you further but I can almost guarantee this will be your cause.
Click to expand...
Click to collapse
but isn't smart sync for wifi/data?
if so it wouldn't, or at least shouldn't affect the sms

pee_cee said:
Yes its SMS message, not on Wifi.
I don't recall ever setting up SmartSync, can you advise what to check/disable?
Click to expand...
Click to collapse
SmartSync only disables data connections (WiFi and mobile data) from 0.00 to 7.00, so I highly doubt it has anything to do with your problem. I have noticed I sometimes get the sms notification when I turn on the screen, but never more than 2 minutes after the SMS has actually arrived. On some CM-based ROM's there is an option for the SMS app to show the time the text was sent, as opposed to the time your device received it, and there are delays caused by the network sometimes, so there may be nothing wrong with your phone.
I suggest you install Ghostly SMS. It will essentially double your SMS notification (unless you purchase the donate version, which will remove it once your SMS app displays its own), but it's always fast and reliable - you will see it gets the SMS a fraction of a second before the system's notification appears. I've been using it since there was a problem with messages not being received on a CM7 Nightly for my old Desire and it has never failed.

I noticed last night, around 7/8PM (UK TIME!) that when I switched my screen on, my WiFi and Signal reconnected.
I am having the same issue as you, my Network and Connections turn themselves off with the screen haha !
ANYONE FOUND A SOLUTION!?

Wilks3y said:
I noticed last night, around 7/8PM (UK TIME!) that when I switched my screen on, my WiFi and Signal reconnected.
I am having the same issue as you, my Network and Connections turn themselves off with the screen haha !
ANYONE FOUND A SOLUTION!?
Click to expand...
Click to collapse
as in the signal bars also are showing no bars with a cross?

Firefox
pee_cee said:
On my HTC One X (Orange Android 4.0.3, HTC Sence 4.0 Software 1.29.061.11) I have a common problem where I don't get a text message until I press the "Power" button at the top of the phone. As soon as I do, the phone beeps and vibrates, and displays the message on screen. The text message will have a time stamp of many minutes before (maybe 15/30 minutes). If I don't keep checking my phone, I don't receive messages!
Its like the phone is in a deep sleep and isn't receiving messages.
Has anyone else had this problem?
Click to expand...
Click to collapse
This used to happen to me at random very annoying it turned out that it was firefox opened in the background that caused it so i just use chrome now. Dont know if this is the same problem.

lawrence750 said:
as in the signal bars also are showing no bars with a cross?
Click to expand...
Click to collapse
Yeah no signal bars, with the red cross over.
And Wifi has no bars also, and is grey'd out as it looks when you are on very low signal?
It either only stays like that for long enough for me to notice it, or it never re-connects and I have to restart my phone.
Any one know a cause/solution?

Wilks3y said:
Yeah no signal bars, with the red cross over.
And Wifi has no bars also, and is grey'd out as it looks when you are on very low signal?
It either only stays like that for long enough for me to notice it, or it never re-connects and I have to restart my phone.
Any one know a cause/solution?
Click to expand...
Click to collapse
that's definitely not smart sync doing that - not for the phone signal anyway
have you got the phone set to wcdma only ?
if you haven't tried already, then try take the sim card out, clean it, blow into the sim slot in case of dust etc and then put back in and try again
what rom are you using? and what mods if any?
Edit: just seen your sig, if you're on stock then its easier to diagnose at least. try and boot the phone in safe mode for a few hours, check if it continues to do it or not

Wilks3y said:
Yeah no signal bars, with the red cross over.
And Wifi has no bars also, and is grey'd out as it looks when you are on very low signal?
It either only stays like that for long enough for me to notice it, or it never re-connects and I have to restart my phone.
Any one know a cause/solution?
Click to expand...
Click to collapse
The mobile signal just disappearing at random happened to me when I traveled to Italy, but it must have been something with the netwrok, since it only happened there. However, I had no problem at all with WiFi.
The fact that both of your connections have bad signal makes me think of a either hardware issue or a bad radio. I've never flashed a radio on my HOX, but maybe a RUU could help. Or you might have to take your phone to the service...

lawrence750 said:
that's definitely not smart sync doing that - not for the phone signal anyway
have you got the phone set to wcdma only ?
if you haven't tried already, then try take the sim card out, clean it, blow into the sim slot in case of dust etc and then put back in and try again
what rom are you using? and what mods if any?
Edit: just seen your sig, if you're on stock then its easier to diagnose at least. try and boot the phone in safe mode for a few hours, check if it continues to do it or not
Click to expand...
Click to collapse
I think its when I travel a big distance in a certain amount of time, I read that some where else. Say if you got in a car, drove around town for a bit (Which is what I did when I noticed) then the signal goes wierd, continue doing it and its as though it gives up trying to chace you round and just thinks, theyll sort me out when im needed (yes im talking as though im bar of signal haha)
The quote below also stacks up, as he was traveling in italy?
asp2010 said:
The mobile signal just disappearing at random happened to me when I traveled to Italy, but it must have been something with the netwrok, since it only happened there. However, I had no problem at all with WiFi.
The fact that both of your connections have bad signal makes me think of a either hardware issue or a bad radio. I've never flashed a radio on my HOX, but maybe a RUU could help. Or you might have to take your phone to the service...
Click to expand...
Click to collapse
Can you try and help me find n RUU, but I don't think i'll use it as theres too much data on my phone to lose
HTC have agreed to a repair already about the WiFi, but I don't want them anywhere near my phone, once you've purchased they dont care. I USED TO LOVE HTC ! Now they have made me think they dont care about the customers.
Perhaps I should ask about the radio issue also?!

Wilks3y said:
Can you try and help me find n RUU, but I don't think i'll use it as theres too much data on my phone to lose
HTC have agreed to a repair already about the WiFi, but I don't want them anywhere near my phone, once you've purchased they dont care. I USED TO LOVE HTC ! Now they have made me think they dont care about the customers.
Perhaps I should ask about the radio issue also?!
Click to expand...
Click to collapse
I see now your signature says you're still on stock ROM. If that's the case, you might not need an RUU, a simple Factory Reset might do the same job. RUU's are different for different carriers, so I can't find one for you, but you will find them all here. If your phone is not branded (i.e. without simlock or any custom software by your carrier), look for one that has 401 in the name, such as this one RUU_ENDEAVOR_U_ICS_40_S_HTC_Europe_2.17.401.2_Radio_2.1204.135.20_release_274900_signed.exe
What data do you have to back-up? You can transfer all your files to your PC or store them on a cloud service (Dropbox, Drive etc) and you can backup your apps & data with adb as shown here.
If it is a radio issue, however, you may well have to take it for repairs. I don't know where you live, but I've always heard nothing but the best about HTC's repairs, they even accepted (free of charge) phones that had beed dropped on concrete or in a tank full of water, which is one of the main reasons I stay away from Samsung (along with TouchWiz, low-quality materials and more, but I'm getting too off-topic).
Good luck and tell us how it went! :good:

Thanks for the replies, I'm just going to hope that the ICS/Jellybean updates over the next few months help.
BTW, I dont use the Firefox browser. Thanks

Rarely connects to 4G/LTE even though signal is good.

I'm in UK with a unlocked HTC10 from carphone warehouse, on the ThreeUK network.
Recently I've noticed that I no longer connect to 4g other than a few very rare occasions.
The only changes,
1. full update to the latest OS
2. I removed the sim card and put it into an old phone, when I re-inserted it into the HTC I got "network updates" which I accepted.
Things I have done after verifying mobile network/data is set to AUTO
1. delete all APN
2. reset APN to details available on my carrier website
3. Settings >backup+reset>network settings reset.
The odd thing is very occasionally it does decide it likes LTE and it works fine.. but its rare.. even if I do a reboot or toggle airplane mode.... the second I remove the sim card and put it into my old phone I have LTE, so it really isn't a signal issue.
My network have suggested a factory reset, but I am not rooted and have game data among other things that are impossible to backup. so at this stage I would rather not .
totally flummoxed by this one!!! any help or suggestions appreciated...

stupink said:
I'm in UK with a unlocked HTC10 from carphone warehouse, on the ThreeUK network.
Recently I've noticed that I no longer connect to 4g other than a few very rare occasions.
The only changes,
1. full update to the latest OS
2. I removed the sim card and put it into an old phone, when I re-inserted it into the HTC I got "network updates" which I accepted.
Things I have done after verifying mobile network/data is set to AUTO
1. delete all APN
2. reset APN to details available on my carrier website
3. Settings >backup+reset>network settings reset.
The odd thing is very occasionally it does decide it likes LTE and it works fine.. but its rare.. even if I do a reboot or toggle airplane mode.... the second I remove the sim card and put it into my old phone I have LTE, so it really isn't a signal issue.
My network have suggested a factory reset, but I am not rooted and have game data among other things that are impossible to backup. so at this stage I would rather not .
totally flummoxed by this one!!! any help or suggestions appreciated...
Click to expand...
Click to collapse
possible solutions:
- get new sim card
- hard reset done inside stock recovery
Sent from my hTc 10

Thanks.
I got a bit of time today, so did a factory reset.. same error still.. and again I put the sim in my old phone and bang 4g straight away..
in the HTC if I leave it in a strong signal position for several minutes I can see 4g occasionally pop up, but if I walk away from the window it goes again, even though I get 4g through the whole house on my old phone, and did on the htc when I first got it.
Actually thinking theres a hardware fault now.. bit of a strange one.. but looks like i'll have to return the phone tomorrow. we can try a different sim first in the shop

Just an update.
I spoke several times to HTC, one ran through basic resets with me no change (hardly surprising as I've already done a hard reset). this agent "sent through" details for return item for fix.. but these took days to arrive so in the meanwhile thinking they were lost I phoned again.
This agent was going to send me a email with lots of settings changes to try... this email never arrived....
Now since then I've done a lot of research online, and found that there are quite a few sites saying the htc10 on the new software has LTE issues, poor signal dropping signal etc.. IE it is my error, so why did htc support not know this? I wonder if its generic media articles or actually a "known" fault... its so hard to search here as both 4G and LTE are too short search terms..
Now Do I bother to send it back to them and be without my phone for a couple weeks?? if its software then surely they cannot do anything... I wonder how long until the next OTA update that may fix this if I just wait it out??
Really don't know what to do, I rely on my phone a lot, 4G isn't really "needed", but I do find the 3g signal is quite poor around a lot of areas I used to get good 4G.

stupink said:
Just an update.
I spoke several times to HTC, one ran through basic resets with me no change (hardly surprising as I've already done a hard reset). this agent "sent through" details for return item for fix.. but these took days to arrive so in the meanwhile thinking they were lost I phoned again.
This agent was going to send me a email with lots of settings changes to try... this email never arrived....
Now since then I've done a lot of research online, and found that there are quite a few sites saying the htc10 on the new software has LTE issues, poor signal dropping signal etc.. IE it is my error, so why did htc support not know this? I wonder if its generic media articles or actually a "known" fault... its so hard to search here as both 4G and LTE are too short search terms..
Now Do I bother to send it back to them and be without my phone for a couple weeks?? if its software then surely they cannot do anything... I wonder how long until the next OTA update that may fix this if I just wait it out??
Really don't know what to do, I rely on my phone a lot, 4G isn't really "needed", but I do find the 3g signal is quite poor around a lot of areas I used to get good 4G.
Click to expand...
Click to collapse
Bro im on 3uk but im on us unlocked firmware with working 4g lte and volte and wifi calling...
On stock 3 firmware i had appalling 4g connectivity but 4g has been crap on 3 for years. Try s off and update firmware to .617 and use a custom rom like viper

MrH871 said:
Bro im on 3uk but im on us unlocked firmware with working 4g lte and volte and wifi calling...
On stock 3 firmware i had appalling 4g connectivity but 4g has been crap on 3 for years. Try s off and update firmware to .617 and use a custom rom like viper
Click to expand...
Click to collapse
Thanks, I'm currently on 2.41.401.3
I have good 4g on my old phone (now sold), and this htc10 was better when I first got it, now its aweful,
Can you link me the exact software youre using? I'm very new to the HTC, I assumed the europ unlocked software would be the same as USA? but I don't get Volte or Wifi calling on 3uk..
I use mirrorlink quite a lot, and like the HTC software, so i'm keen to keep on a stock rom so I can use android pay as well etc.. or is your rom custom/rooted etc? Sorry to pester, you're the first threeuk customer on this phone I've come across. any extra details/information would be awesome thanks.

stupink said:
Thanks, I'm currently on 2.41.401.3
I have good 4g on my old phone (now sold), and this htc10 was better when I first got it, now its aweful,
Can you link me the exact software youre using? I'm very new to the HTC, I assumed the europ unlocked software would be the same as USA? but I don't get Volte or Wifi calling on 3uk..
I use mirrorlink quite a lot, and like the HTC software, so i'm keen to keep on a stock rom so I can use android pay as well etc.. or is your rom custom/rooted etc? Sorry to pester, you're the first threeuk customer on this phone I've come across. any extra details/information would be awesome thanks.
Click to expand...
Click to collapse
Search for SneakyGhost firmware htc 10 xda, exactly like that in google i am not sure if im allowed to send links on here that's why and you will find the firmware in their, its 2.xx.617.x
My phone is rooted, head over to the viper 10 page on here its a custom rom... If you get an RUU exe file you can install
617 firmware and stock rom and will have working volte, inside my home i have 4g lte connection so its about 60mb download speed, no joke on 3!!!! Lol with an RUU you will lose ALL data so back up on pc and move back over afterwards, any more questions or if i was clear PM me

So a bit of an update.. I chickened out of a software change... So got the sim changed, no difference, gotthe phone sent for repair, they updated to 401.4 but no change.. rang again, and we tried setting to 4G only using the service menu, and bop 4G signal just fine.. so it genuinely is a software bug in 7.0, the stupid thing is I had one bar at 3G, I swapped to 4g only and had 5bars!!!!! so it wasn't even like it was favouring the strongest signal.. just a shame I cannot receive phonecalls on 4g, so I need to leave it set to auto and just accept until they sort it that I rarely get 4g.. but at least I now know if I need 4g at any point I can go to the service menu and swap to 4g temporarily. he sounded like there have now been like a few reports of this, so hopefully HTC take it on board and push a software update promptly. he suggested 3-4weeks as a potential timescale, I suspect he meant months.. but fingers crossed

stupink said:
So a bit of an update.. I chickened out of a software change... So got the sim changed, no difference, gotthe phone sent for repair, they updated to 401.4 but no change.. rang again, and we tried setting to 4G only using the service menu, and bop 4G signal just fine.. so it genuinely is a software bug in 7.0, the stupid thing is I had one bar at 3G, I swapped to 4g only and had 5bars!!!!! so it wasn't even like it was favouring the strongest signal.. just a shame I cannot receive phonecalls on 4g, so I need to leave it set to auto and just accept until they sort it that I rarely get 4g.. but at least I now know if I need 4g at any point I can go to the service menu and swap to 4g temporarily. he sounded like there have now been like a few reports of this, so hopefully HTC take it on board and push a software update promptly. he suggested 3-4weeks as a potential timescale, I suspect he meant months.. but fingers crossed
Click to expand...
Click to collapse
When you were having this problem was Chrome allowing you to access some sites, but on others saying that the DNS server could not be reached? If its same problem that you are having I can't use your work around as it's difficult to get a 4G signal where I live.

matt07930 said:
When you were having this problem was Chrome allowing you to access some sites, but on others saying that the DNS server could not be reached? If its same problem that you are having I can't use your work around as it's difficult to get a 4G signal where I live.
Click to expand...
Click to collapse
Sounds like you're having a different issue, assuming you have a data connection, and each website has no server issues, or the ISP isn't blocking the site(usually they'd say not a DNS error) then one site should load as easy as another, I have these exact same issues when I have ad-blockers enabled on certain sites (some you'd expect to work).. do you run a blocker of any form? try disabling it and trying again on that website..

stupink said:
Sounds like you're having a different issue, assuming you have a data connection, and each website has no server issues, or the ISP isn't blocking the site(usually they'd say not a DNS error) then one site should load as easy as another, I have these exact same issues when I have ad-blockers enabled on certain sites (some you'd expect to work).. do you run a blocker of any form? try disabling it and trying again on that website..
Click to expand...
Click to collapse
No ad blocker.
I tried a variation of your solution and made the phone only connect to 3G or lower which seems to have solved the issue even when I switch back to 4G, hopefully it's not just a coincidence. Thanks for your advice.

Three UK user here, just tried the service menu 4G force and that seems to work for me, I shall see how it goes. Good for dead spot testing
So a few days later: Leaving it on means 4G pretty much everywhere I go but the obvious downside is no calls even through the ThreeInTouch app. Bit of a downer so back to watching it sit on 4G until I want to actually use it then it goes 'Hey let me check jump back to regular H for you'

Question ⚠️ Suddenly, The mobile data connection started to fail.

POCO F3
Suddenly, The mobile data connection started to fail.
It suddenly disconnects, and I have to turn airplane mode on and off to get it to connect again, but it doesn't take long, it varies, and the connection is lost again.
And when it's connected, it's very slow, but a lot, it went from a 15mbps connection (before the problem), to a .3mbps connection. I have installed several ROM'S, and nothing fixes it. Another thing I've noticed is that suddenly he also started using Roaming when he didn't have it before.

Update: Testing with another mobile, with the same SIMCARD, i can connect to my red 4G, but in this POCO F3, when i tried connect to 4g cant, I get a notification that the selected network cannot be connected, The only one that accepts me is the one with 4G R (I think it's roaming).

UPDATE: Also I think that is a problem of crash of the Band 28 LTE

My modem often crashes too, since I bought the phone last year. Standard ROM, no unlock/root, updates when FW goes out.
I mostly see modem crash when the phone switch from wifi to LTE to wifi to LTE etc when I go outside. At one point I notice I have no data connection, sometimes it displays the "no SIM card" icon, the modem program loops and crash and the phone becomes warm because of this and lose its battery real fast.
Only cure is to reboot the phone.

Hi, my phone just started having a very similar issue after working fine for almost two years. I am on T-mobile in US, where are you? Did you find out any more info on this?

stevencrayne2 said:
Hi, my phone just started having a very similar issue after working fine for almost two years. I am on T-mobile in US, where are you? Did you find out any more info on this?
Click to expand...
Click to collapse
The truth is that I never found out, what I did find out is that my IMEI of my cell phone had a report of theft (I bought it second-hand) and only 2 networks (from my country) grabbed me: "telcel and altán", of which altán only got roaming and only telcel got the original 4g, on the other hand "at&t and movistar", nothing, only the company detected me, but they didn't get a signal... No way, I gave up, I switched to the only one that if he caught me it was Telcel (even if he didn't want to).

stevencrayne2 said:
Hi, my phone just started having a very similar issue after working fine for almost two years. I am on T-mobile in US, where are you? Did you find out any more info on this?
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A lot of people complain about modem crash since the beginning, Xiaomi never fixed it. It seems the problem is happening when switching cell towers/wifi. At one point you notice you have no data or the "no sim" icon, you have to reboot.

I was experiencing that a lot when I was on a MVNO for the major networks (Mint Mobile, Google Fi, etc.). Upon switching to AT&T Prepaid, I am experiencing far, far fewer disconnects. Some particular locations will give me the exclamation point, but by and large it's much better.

It seems everyone is torn in half, between this glitch being software related, or hardware related.
I have tried everything to blocking out certain bands with network guru, to taking my phone apart and looking for some kind of issue. Been through countless roms, and firmwares, and kernels. I've gotten a new Sim card too. Have tried Compressed air. with nothing seeming to solve this issue permidently.

Zinnz said:
It seems everyone is torn in half, between this glitch being software related, or hardware related.
I have tried everything to blocking out certain bands with network guru, to taking my phone apart and looking for some kind of issue. Been through countless roms, and firmwares, and kernels. I've gotten a new Sim card too. Have tried Compressed air. with nothing seeming to solve this issue permidently.
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For what it's worth, I'm also using a custom ROM (Arrow OS 13). I recall a while back there being kernels people developed that attempted to address the phone restarting issue.

Veiranx said:
For what it's worth, I'm also using a custom ROM (Arrow OS 13). I recall a while back there being kernels people developed that attempted to address the phone restarting issue.
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Phone does not restart. It's just that at one point, you notice your data are not working, you cannot enable them, nor make phone calls, you may have the "no sim" account, your phone may go warm because the modem is constantly restarting.
In the end, you have to reboot your phone and everything is normal again.
As it about always happens while outside, I cannot connect a usb cable to dump logcat or others.

Magister54 said:
Phone does not restart. It's just that at one point, you notice your data are not working, you cannot enable them, nor make phone calls, you may have the "no sim" account, your phone may go warm because the modem is constantly restarting.
In the end, you have to reboot your phone and everything is normal again.
As it about always happens while outside, I cannot connect a usb cable to dump logcat or others.
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Try to put some pressure on the phone screen, not too much, push down slightly or press it together in your hands while holding volume up volume down and power button. Let me know if this helps

Zinnz said:
Try to put some pressure on the phone screen, not too much, push down slightly or press it together in your hands while holding volume up volume down and power button. Let me know if this helps
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Were you listening to something on Bluetooth via mobile data?
were you driving?
What was the ambient temperature in the room or outside when this occured?
Just trying to narrow down hardware or software.
My poco f3 likes to reboot with the no Sim error, when I'm driving around on mobile data, listening to Spotify via Bluetooth.
I'm curious what circumstances other users have encountered this error in, or what they were doing at the time when it occurred

As it happens about only when I'm outside, I can be driving (phone connected in BT) or walking.
But my phone never reboots, never.