Data connectivity issues - HTC One X

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.

Related

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.

[Q] Wifi connections fail after phone is on for a few hours

I've noticed over the past couple of weeks that even though wifi is turned on and my usual networks are remembered, (home, work etc...) my One X will not connect to the wifi after it has been on a while.
When I go into settings, the wifi status cycles through 'Connecting...', 'Disconnected' and 'Scanning...'. Turning the wifi on and off on the phone has no effect.
I'm not exactly sure how long this takes to stop working, but if I restart the device, it resets the problem and I am able to use wifi again. With the quick startup and a fairly large data plan, this isn't a massive deal, but it would still be nice to be able to connect to wifi without having to restart...
Anyone had this problem before/got any ideas as to what's causing it or how to fix it? I've searched for this problem in the One X forums but found nothing, sorry if it's been brought up before...
...I have the same issue on these security protocols
WPA (TKIP)
WPA (AES)
WPA2 (TKIP)
WPA2 (AES)
WPA Mixed
Tried switching bands B, then G, now on Mixed B+G but keeps scanning, aquiring ip (Wireless router broadcasting DHCP) then skips back to scanning looping again and again.
If I reset the password on my router then it will aquire ip and be fine, but if I disconnect wireless on the phone and then try reconnect it just loops as before unless i reset the password on the router again..
Tried upgrading firmware to latest
Switched from channel 1 to 6 (midway)
It only works on the most basic WEP (hex10) setting...which surprises me as my Desire, a 2 year old device, worked just fine on WPA.
SO try WEP?
Oletha said:
I've noticed over the past couple of weeks that even though wifi is turned on and my usual networks are remembered, (home, work etc...) my One X will not connect to the wifi after it has been on a while.
When I go into settings, the wifi status cycles through 'Connecting...', 'Disconnected' and 'Scanning...'. Turning the wifi on and off on the phone has no effect.
I'm not exactly sure how long this takes to stop working, but if I restart the device, it resets the problem and I am able to use wifi again. With the quick startup and a fairly large data plan, this isn't a massive deal, but it would still be nice to be able to connect to wifi without having to restart...
Anyone had this problem before/got any ideas as to what's causing it or how to fix it? I've searched for this problem in the One X forums but found nothing, sorry if it's been brought up before...
Click to expand...
Click to collapse
I don't want to spoil your day but I think you have a faulty unit. The same thing happened to me, with my first One X. After 4 days and nights of painfully trying everything that could fix the problem, I returned the phone and got another one. Worked strait out of the box, no issues whatsoever.
The only ways I could keep the connection was to change the security of the router to WEP, or frequently reset the router.
So if you have the possibility, change the device. Good luck.
Sent from my HTC One X using XDA
oftiklaus said:
I don't want to spoil your day but I think you have a faulty unit. The same thing happened to me, with my first One X. After 4 days and nights of painfully trying everything that could fix the problem, I returned the phone and got another one. Worked strait out of the box, no issues whatsoever.
The only ways I could keep the connection was to change the security of the router to WEP, or frequently reset the router.
So if you have the possibility, change the device. Good luck.
Sent from my HTC One X using XDA
Click to expand...
Click to collapse
I'm having what sounds like exactly the same issue... only connects with WEP.. bleh!
oftiklaus said:
I don't want to spoil your day but I think you have a faulty unit. The same thing happened to me, with my first One X. After 4 days and nights of painfully trying everything that could fix the problem, I returned the phone and got another one. Worked strait out of the box, no issues whatsoever.
The only ways I could keep the connection was to change the security of the router to WEP, or frequently reset the router.
So if you have the possibility, change the device. Good luck.
Sent from my HTC One X using XDA
Click to expand...
Click to collapse
Hmm ok thanks... Did you go through HTC or the company you bought the contract from? Just wondering whether HTC's replacement service is better than 'post it back and we'll send you a new one in a week'...
Having read in advance about the issues the One X has, described here on XDA, I decided to wait untill a reputed retailer had in physical stock, and got to see and power on the device. This also allowed a quick and hassle free exchange.
Regarding the WiFi problem, you cannot just go asking around every 30':
"... excuse me, could you please restart your
router? ... Or maybe change the security protocol to WEP?..."
I mean it's fine if you only connect vis WiFi at home where you can customize as much as you can, but what's the point of a mobile device if it's just "somewhat" mobile...:banghead:
So try and see if you can get a refund for your phone and get another from a retail store, check for screen spots, screen flickering, screen flex and of course the WiFi issue.
On the other hand the phone is truly amaizing almost cannot let it down...
Forgot to specify: One X grey, unbranded, network free.
Sent from my HTC One X using XDA

Three Uk Signal Dropouts

I no that i am not the only person who has this issue and it is driving me up the wall. for some reason when i loose signal alltogether it wont auto recontect when i come into signal again instead i have to force it to reconect.
At first i put up with this becasue i loved the phone and i thought that three would be doing somthing about it to fix the problem. but as i have recieved no fix i am getting more and more tiered with the phone and im swaying more and more towards the S3.
The only way that i can hold a signal is if i set it so that i am on 3g only which helps but suks becasue there are alot of ares which dont have the 3g signal.
i have also noticed that the phone looses signal when i put it in my pocket so if somone is trying to contact me while i am not actually using my phone its like i might aswell not even own it.
This signal issue is pretty much rendering my phone usless does anyone know of any fixes that i can posibly do i have not applyed any OTAs directly from three but i have unlocked my phne with HTC DEV and have installed the latest stock roms to try and sort it out with the latest euopean radio to no provail.
does anyone have any sugestions for me? a posible fix? news from three or should i just give up on the HOX and switch phones altogether.
Same issue here dude, minus losing signal in my pocket. Also, I have to use the airplane mode and not toggle the network connection to get it to work
Sent from my HTC One X using Tapatalk 2
GetScopedx said:
I no that i am not the only person who has this issue and it is driving me up the wall. for some reason when i loose signal alltogether it wont auto recontect when i come into signal again instead i have to force it to reconect.
At first i put up with this becasue i loved the phone and i thought that three would be doing somthing about it to fix the problem. but as i have recieved no fix i am getting more and more tiered with the phone and im swaying more and more towards the S3.
The only way that i can hold a signal is if i set it so that i am on 3g only which helps but suks becasue there are alot of ares which dont have the 3g signal.
i have also noticed that the phone looses signal when i put it in my pocket so if somone is trying to contact me while i am not actually using my phone its like i might aswell not even own it.
This signal issue is pretty much rendering my phone usless does anyone know of any fixes that i can posibly do i have not applyed any OTAs directly from three but i have unlocked my phne with HTC DEV and have installed the latest stock roms to try and sort it out with the latest euopean radio to no provail.
does anyone have any sugestions for me? a posible fix? news from three or should i just give up on the HOX and switch phones altogether.
Click to expand...
Click to collapse
There is a thread here http://forum.xda-developers.com/showthread.php?t=1613521 and basically if you dial *#*#4636#*#* choose phone information and change set preferred network type to WCDMA only the problem is solved - for me anyway but only until restart as the setting is reset.
gffmac said:
There is a thread here http://forum.xda-developers.com/showthread.php?t=1613521 and basically if you dial *#*#4636#*#* choose phone information and change set preferred network type to WCDMA only the problem is solved - for me anyway but only until restart as the setting is reset.
Click to expand...
Click to collapse
You can make the setting permanent by instead going to "Mobile Network" in Settings, then "Network Mode" and select WCDMA Only. That sticks across reboots.
darkoroje said:
You can make the setting permanent by instead going to "Mobile Network" in Settings, then "Network Mode" and select WCDMA Only. That sticks across reboots.
Click to expand...
Click to collapse
Confirmed, Thanks mate.
i no of these fixes but what i really wanted to no is if 3 are planning a fix for the problem becasue at the moment its a joke
GetScopedx said:
i no of these fixes but what i really wanted to no is if 3 are planning a fix for the problem becasue at the moment its a joke
Click to expand...
Click to collapse
Im thinking its a htc software issue which will probably get fixed, it didnt happen with my Desire HD with same simcard.
gffmac said:
Im thinking its a htc software issue which will probably get fixed, it didnt happen with my Desire HD with same simcard.
Click to expand...
Click to collapse
it has been 2 months though and it still hasnt been fixed HTC are taking the piss with this
Also another thing I have noticed is the signal is slightly worse in a case than without.... So mine at work can be hit and miss even more. I am on Three to with the Three firmware.
It has actually been better since I got it back from HTC repair. They seemed to have changed the whole housing and battery in the report for the squeaking and moving lcd screen. Maybe they have done a better job at putting it together than from Taiwan?
Although I didnt have this exact problem with my HOX from Three…. (just had crap signal, would re-connect OK though, but was hard to get from 3g to 2g and back again sometimes) mine just had poor signal everywhere…. so much so, I cancelled the contract. Cost me £500 to get out of it…. but well worth it TBH.
S
I purchased my one x from amazon and got three to swap my sim from my desire to a micro sim. I only get loose network when im at home.
I reported the network drop to them and they got back in touch. They said that there was not a problem with my phone its just the location of my house and the distance away from the mast. After someone from the network team called me they said that we can offer you a "home hub" (for free) which connects to my home router which provides signal in my house. There is always a catch with companies. They wanted me to renew my contract as i have 2 month left. I am not going to renew as i can find cheaper sim only deals.
I guess what im trying to say is that if you have a long contract left with three file a fault online and push for the home hub.
There is no harm in asking.
Shahzad
I have the same problem with Three and at first I was just like ahh I can live with that.
Now its really starting to annoy me no signal indoors what so ever and when I leave the house will not auto connect I have to enter and exit airplane mode for it to pick up a signal again, Ive sent in a complaint will see if they get back to me.
Just a heads up the signal not reconnecting seems fixed in the latest system, custom ROM here http://forum.xda-developers.com/showthread.php?t=1601543
ROM Base 2.05.401.2
Android 4.0.4

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?
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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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Click to collapse
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.

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