MIUI 11 - suddenly lost ability to use mobile data - Xiaomi Poco F1 Questions & Answers

Happened today. Was peacefully browsing internet with Chrome using my mobile data when suddenly I lost access to the internet. No messages shown on screen or anything.
Chrome won't load pages, showing the DNS_PROBE_FINISHED_NO_INTERNET error code. All other apps that use the internet immediately show an error saying theres no internet access. Additionally, when I ping a remote address (eg. 8.8.8.8) via terminal, I'm getting spammed with "Destination Port Unreachable" so much that the terminal app hangs and I have to force close it.
I already confirmed it's not a carrier issue, other SIM cards show the same issue on this phone, when all of them works on a different device. I tried changing between 2G/3G/4G, reinstalling my carrier's VPN profile for internet connectivity, staying in airplane mode for about 10 minutes (per carrier's recommendation), also tried restarting the phone and even wiping the cache partition.
WiFi internet works fine, so does the rest of my mobile functionalities (SMS, calling). Any ideas about that one?

There are many reports of this happening. It has something to do with the fragile antenna connector/wire. You'll have to open the back cover and check if the wire integrity and connector is intact.
If you are in warranty, send it straight to service center.
WiFi and Bluetooth are on one chip. So if one works, the other should work too.
Cellular is on separate chip.
Good luck my friend. I hope you can get your phone fixed.

Alrich said:
There are many reports of this happening. It has something to do with the fragile antenna connector/wire. You'll have to open the back cover and check if the wire integrity and connector is intact.
If you are in warranty, send it straight to service center.
WiFi and Bluetooth are on one chip. So if one works, the other should work too.
Cellular is on separate chip.
Good luck my friend. I hope you can get your phone fixed.
Click to expand...
Click to collapse
That's strange, I'd think a loose antenna connection would not be picky about only impacting internet connectivity but not phone calls and messaging?
Either way I can have a look at this, never opened the back cover on this phone, I assume it doesn't void warranty?

Okay, since I was only evaluating MIUI 11 (flashed it a few days after release) and there were already a few things that annoyed me with it, I decided to pull the proverbial trigger and switch to something else.
And I'm glad that I did, giving LineageOS 16 a try (build 17.11.19) and mobile data is now working exactly like it used to do Good news, since it doesn't seem to be a hardware issue, but also bad news, since it seems like MIUI 11 has some sort of an internal issue that can permanently (?) break mobile data. Well, I'm not willing to put up with it, hopefully somebody else more skilled than me can discover what could have been wrong

guys, i just lost my data connection. 4G logo is available but no internet. I swap from Sim1 to Sim2 slot also the same. I have tested my simcard with iphone 6 and it is working.

Related

[Q] Why is Google Talk constantly losing connection on mobile data?

Just bought my SGS2 yesterday and flashed it to KI8 and rooted it with CF-Root. Didn't actually test it before flashing but for some reason Google Talk keeps losing connection and signs in very often. Has this got something to do with the modem version losing data connection or is it happening because of some power-save setting?
Today I flashed KI4 and Google Talk has dropped offline a couple of times already. Is my device flawed?
Any suggestions on different modem versions and/or firmwares to try out? Maybe a separate GTalk client?
Has anyone had issues like this? I tried to search the forum but most topics cover connection problems via WiFi and not mobile data.
That happens to me when I don't have a strong connection. I say it's probably a carrier issue.
Then it must be a local issue. My friend has the same phone and same operator, but lives about 150km away from me and his GTalk stays connected.
Is there a way to monitor and/or log the data connection with some software?
I have also run into this problem since rooting. I can't even find google talk on my phone to disable it.
mratlndmrk said:
I have also run into this problem since rooting. I can't even find google talk on my phone to disable it.
Click to expand...
Click to collapse
For me it didn't matter if the phone was rooted or not. Wierdest thing is that even if my buddies see me offline, I receive messages immediately when they send one.
Quick update: I found out a way to make signal bars turn green when connected to Google services. Now I can sometimes see that the bars are gray when turning the screen on. So it's clear that my phone disconnects from Google in longer standby.

[Q] Can't get internet to load?

~So I haven't really seen anyone else with this issue so I don't know how to fix it.
My phone likes to randomly not load things via internet. Mostly happens with ATT Data connections, but sometimes it happens with Wifi as well I believe (hasn't happened with wifi in a long time).
I can try and load a page and it will simply not load a thing for a good while (sometimes hours), then all of a sudden it will load like it's on a 10MB connection.
Happens with the internet browser, facebook, and any internet apps. Really gets annoying when I'm trying to browse the internet
I have tried different APNs to no avail, tried turning wifi on/off, changing all wifi settings, etc.
Anyone got any suggestions? (Maybe I'm just retarded and there's a well-known fix for this... at least I can hope right?)
Thanks
EDIT: It also used to never send MMS until I changed APN's if that makes any difference. Just not sure if its a software/setting issue, or if its hardware that needs to be replaced.
There are two APN settings, one of which is used by MMS. It sounds as if your APN settings might have been wrong at one point. What are your APN settings now?
Are you on a different ROM? Do you use a 3rd party app to disable and enable the data connection (to save power)? I know my app sometimes doesn't turn the data back on, so I have to go in and do it myself.
Is this your first phone with AT&T? If so, where did you transfer form? Did you have a data plan with your previous carrier? Did you buy your phone from Amazon?
Disarmer said:
~So I haven't really seen anyone else with this issue so I don't know how to fix it.
My phone likes to randomly not load things via internet. Mostly happens with ATT Data connections, but sometimes it happens with Wifi as well I believe (hasn't happened with wifi in a long time).
I can try and load a page and it will simply not load a thing for a good while (sometimes hours), then all of a sudden it will load like it's on a 10MB connection.
Happens with the internet browser, facebook, and any internet apps. Really gets annoying when I'm trying to browse the internet
I have tried different APNs to no avail, tried turning wifi on/off, changing all wifi settings, etc.
Anyone got any suggestions? (Maybe I'm just retarded and there's a well-known fix for this... at least I can hope right?)
Thanks
EDIT: It also used to never send MMS until I changed APN's if that makes any difference. Just not sure if its a software/setting issue, or if its hardware that needs to be replaced.
Click to expand...
Click to collapse
SoCaliTrojan said:
There are two APN settings, one of which is used by MMS. It sounds as if your APN settings might have been wrong at one point. What are your APN settings now?
Are you on a different ROM? Do you use a 3rd party app to disable and enable the data connection (to save power)? I know my app sometimes doesn't turn the data back on, so I have to go in and do it myself.
Click to expand...
Click to collapse
My APN settings are the "phone" HSPA and "phone" MMS settings from the large thread in this forum.
The phone isn't even rooted. No different ROM, just a stock phone. No 3rd party apps that disable/enable data.
joebobjoe said:
Is this your first phone with AT&T? If so, where did you transfer form? Did you have a data plan with your previous carrier? Did you buy your phone from Amazon?
Click to expand...
Click to collapse
I've had ATT for a decade or so now. Phone bought and activated in an ATT store, and last phone I had was an iPhone, so whatever data plan that used was what I was previously using. I would assume they changed the plan to reflect the android device (if there is any difference), but I wouldn't really know because it is on our family account.
Anybody got any clue? This is really annoying the **** out of me. Also found out my brothers phone (on same family plan) is doing the same thing.
Disarmer said:
Anybody got any clue? This is really annoying the **** out of me. Also found out my brothers phone (on same family plan) is doing the same thing.
Click to expand...
Click to collapse
Maybe download Tweakker from the market; it automatically rewrites APN settings for your phone and carrier. CM7 uses wap.cingular, and I used Tweakker to change it from that. Worked, no probs, loved me long time, yada yada.
Thanks, just downloaded it. We'll see if it makes any difference.
Worked great until just now. Lost internet again. Thanks though.
Any other ideas?
i am on AOKP, not sure if you have the options to do the following in stock but try.
1.do you have the option of deleting APN? delete all...
2. force the phone to look for wireless carriers (takes like 4 minutes).
3. click on At&t to registet on it.
4. reboot and the original apn should be there.
I reset it back to the original APN but I dont expect it to help... I had the problem even before I started messing with the APN. We'll see how it goes though.
Any other suggestions are still welcome.
I have a similar, if not the same problem. I have concluded that it's either a modem/hardware issue or network issue. Every one and a while, I'll have to wait ~20 seconds for the internet. This always happens on AT&T data. Once the connection is made, the green and orange data indicators light up and the page loads just fine. Changing the APN's increases my internet speed by a lot, but does not fix the latency issue.
Someday I'll get around to calling AT&T.
joebobjoe said:
I have a similar, if not the same problem. I have concluded that it's either a modem/hardware issue or network issue. Every one and a while, I'll have to wait ~20 seconds for the internet. This always happens on AT&T data. Once the connection is made, the green and orange data indicators light up and the page loads just fine. Changing the APN's increases my internet speed by a lot, but does not fix the latency issue.
Someday I'll get around to calling AT&T.
Click to expand...
Click to collapse
Sounds like the same issue to me.
I keep thinking I should go to the ATT store but I really dont feel like having them do a reset of my phone then send me home without actually fixing anything.
Have you noticed what kind of connection you have? I don't use stock, so I haven't thoroughly tested this there, but I believe I experience the same issue. I'm running CyanogenMod 7, and what I see is that whenever the phone drops to 3G, I don't get data. I can force 2G (Edge), which works, and if I pick up HSPA+, I get data. If I'm in fairly sketchy signal areas (bad parts of buildings, fairly far from towers, etc.), I'll notice it flip-flopping back and forth between 3G and H+, with no data. I've never had an issue with wifi not properly loading anything.
I did try switching back to stock for a couple of hours, and it appeared my issues were more along the lines of what you describe, without actually displaying a flip to 3G when I can't get data...but like I said, I don't use stock on a regular basis.
NINJA EDIT: I'm on my second phone with this issue, after getting a refurb due to a USB port going bad. I've tried flashing multiple modems, and have been able to increase my speed, but have not been able to fix the issue when I drop to 3G.
nd_geek said:
Have you noticed what kind of connection you have? I don't use stock, so I haven't thoroughly tested this there, but I believe I experience the same issue. I'm running CyanogenMod 7, and what I see is that whenever the phone drops to 3G, I don't get data. I can force 2G (Edge), which works, and if I pick up HSPA+, I get data. If I'm in fairly sketchy signal areas (bad parts of buildings, fairly far from towers, etc.), I'll notice it flip-flopping back and forth between 3G and H+, with no data. I've never had an issue with wifi not properly loading anything.
I did try switching back to stock for a couple of hours, and it appeared my issues were more along the lines of what you describe, without actually displaying a flip to 3G when I can't get data...but like I said, I don't use stock on a regular basis.
NINJA EDIT: I'm on my second phone with this issue, after getting a refurb due to a USB port going bad. I've tried flashing multiple modems, and have been able to increase my speed, but have not been able to fix the issue when I drop to 3G.
Click to expand...
Click to collapse
Im in an area where I constantly get 4G or LTE... I haven't really noticed a correlation between the drops and whether or not its on 4G/LTE. I haven't experienced it on Wifi in a very long time though.
Also, the stock APN seems to magnify the problems greatly. Switched back to the Tweakker APN and it runs much better (although it still happens occasionally)
Had the same issue as you, try my guide here: http://forum.xda-developers.com/showthread.php?t=1576199 it seems to have helped many!
Sent from my AT&T Galaxy S II (I777) Killin' it with Task650's awesome AOKP ROM port!
Thanks but the Tweakker APN seems to have solved the internet issues. Only problem now is that MMS doesn't work with the Tweakker APN. Anyone got any suggestions on that?

HELP! Wife is driving me crazy.

About 8-10 months ago.....maybe a little longer, my wife and I purchased two LG K7 (LG-K330) on the Family Mobile plan (T-mobile). I have had zero problems with my phone. My wife on the other hand is having some bizarre problems and she's blaming me for them. Here is a small list of some of the problems:
1. Being blocked from websites that she has been to on several occasions.
2. When going to a website, she will get either redirected or a screen saying 404 Error and one that states she does not have permission.
3. On Facebook, she has lost the ability to access all of her settings. Her "Sharing" configuration has changed and she can't set it back. And she's saying that she doesn't have the same amount of access that she had previously.. She says that sometimes she can't access links in Facebook and when she tries it bounces her right back to where she was.
She has been poking around the phones files and she claims that there are very similar file on my laptop computer. Now she thinks I am trying to limit her access and phone usage. For all I know, she has deleted something that needs to be on the phone. My question is has anyone experienced something like this before and if so, is it repairable? One more note on this matter. This is the fourth phone that this has happened on. The others were Samsung's.
Any help would be greatly appreciated because I can finally prove to her that I'm not smart enough to "hack her phone.
LG K7
Provider: Family Mobile
Model LG-K330
Android ver. 5.1.1
Security Patch Level: 2017-04-01
Build Number: LMY47V
Software ver. K33011g
Phone has never been rooted and has stock firmware. It has been connected to my laptop a couple of times to transfer photo's.
That's a bizarre problem to be having. But have you tried factory resetting it? Back up important files like photos beforehand. This honestly sounds more like a problem with the network than the phone. Have you been using the network? Make sure your DNS is correct and that your network isn't being limited.
Billybobjoe13245 said:
That's a bizarre problem to be having. But have you tried factory resetting it? Back up important files like photos beforehand. This honestly sounds more like a problem with the network than the phone. Have you been using the network? Make sure your DNS is correct and that your network isn't being limited.
Click to expand...
Click to collapse
I swear it's her doing it somehow. It happens to every phone she has used. I have done several factory resets and it hasn't helped. She used our wi-fi connection at home ALL the time. I'll check out the DNS and see if it's being limited. But I would think that I would be having the same problem as I use the network a lot too.
Hey Billybobjoe, I have some additional information that might clarify the problem. She says she cant reach "https" sites, she can only see part of her Facebook page, the permissions are growing and sharing is a lot worse. She says she can't really get to a "real" website(it says something about "there is no cache for the page". She also states that she can no longer change her privacy settings on Facebook and that she thinks her phone is heavily connected to Russian social media websites.
Does this help in any way? Thanks in advance for all your help in this matter.
Billybobjoe13245 said:
That's a bizarre problem to be having. But have you tried factory resetting it? Back up important files like photos beforehand. This honestly sounds more like a problem with the network than the phone. Have you been using the network? Make sure your DNS is correct and that your network isn't being limited.
Click to expand...
Click to collapse

RS988_10h_little or no mobile internet(data?)_seek advice re: rollback/flash forward

You needn't read this thread. There is nothing of any import here.
I was unable to learn how to delete it, or I would have.
As I mentioned below, I manually updated this phone to Nougat using the LG Bridge program. It complicates matters that I can't remember the exact time-frame for issues. I do remember getting real-time traffic updates using google maps even after I upgraded to Android 7. And I did stream Netflix once while on a 12 hour roadtrip, but I can't remember if that was before or after the road-trip. I have found and tried many APN's for the H2O service. Some are supposedly specifically for the G5, others just for mms or internet. Most recently, I did a factory reset after backing up my personal data and media. Twice now actually. The first time, I ran the backup software soon after resetting and when things hadn't changed, I surmised that maybe I was just importing the problem back onto the phone in my settings or something, so I reset again and this time only chose two of the settings categories near the top of the list since they seemed separate to the navigation programming.
I'm going to reset again now and see if the maps work with a stock setup, then see if I can slowly add things one at a time and continually monitor the data functionality.
If a moderator sees this and can delete this post, I would appreciate it since it doesn't seem like it could be helpful to anyone else the way it is. If I am successful in getting the data working and this thread still remains, I will post the process I had followed to achieve that in an "Issue Solved" heading at the bottom. Everything between the snowflakes (*****) is the older post and edits.
*****
History of Issue(s):
>This is my first smartphone and my first Android device
> Bought phone used off swappa running MM 6.?
>Have owned phone for around 8 months
>Volume down button wasn't working, figured I could live with pressing vol up and moving it down manually.
> Thought it would be good idea to upgrade manually to Nougat (10h update) Using LG bridge (about 5 months ago?)
> My carrier is H2Owireless, an AT&T MVNO
> Used to have internet, google maps real-time traffic used to work, Netfilx used to work (both without WiFi).
> Could make calls, send texts, listen to Pandora or Spotify and use my Maps for commuting to work.
> Couldn't send MMS pic msgs.
> Began to learn about APN's and what the different network settings did.
>Tried many APN's and fotzed around with Global, LTE/CDMA, LTE/GSM/UMTS and the submode settings
>Can get 4G and LTE , often have to switch back to Global setting to send SMS/MMS
> Had H2O set up APN as best they knew and network settings to what they felt would work best
> Can do anything and evrything when Wifi is enabled (that's never been an issue)
> I thought phone had bricked about 2 months ago while on a roadtrip.
> Discovered on forum that I could swap cam plus for chin and power on that way.
> Turned out power button was no longer functional
> Learned about vol up + charger to power on phone (use an app to power off and restart phone)
> took off cam plus so I could have phone in case.
And now, I'm standing at the edge of a very deep rabbit hole with a phone that can't use mobile data for most internet access (spotify works, Pandora never worked very well). I've discovered that the version of Nougat I'm running is problematic (update 10h Brightpoint) and that my forcing the update to Nougat might be largely responsible for these issues.
I see myself having a choice between learning how to flash the phone back to Marshmallow, or learning how to flash it up to update 21c... or live without mobile data for most of the functionality I wanted from the phone...
I seek advice from the the forum for which of these options people think I might best choose. Do I need to acquaint myself with these programs used to flash the ROM? Does it seem to you readers that my problems are symptomatic of those which are best rectified by flashing up? Or rolling back to Marshmallow...
I just want to be able to google something while I'm away from wifi.. to get traffic updates while I'm using the navigation.. to listen to spotify.. maybe even watch something on netflix... (calling, SMS and MMS functionality is a given, but I do still have them for the most part).
I can pick things up if I read tutorials / guides... I've flashed PC BIOS before... I could figure it out if I needed to...
But maybe I just need a new chin or clean it? Maybe I should factory reset? Maybe there's other potential causes I'm unaware of?
Any and all suggestions are welcome. It's late here and I won't be reading any responses until tomorrow at work.
Thanking you very much in advance. --Wayne
Edit: I was about to check LG Bridge to see if there was an update available for nougat.. thought I would get this out there first since I was pretty sure I wouldn't get both done tonight..
3rd edit: I checked for LG update, nothing available. I finally decided to factory reset before getting into flashing. That seemed to fix the google maps issue as it seemed to be working without WiFi enabled (I say 'seemed' because my office is slightly below grade and getting a good signal is tough. If it's not working, the address remains grayed out and the connection just buffers, the address filled in after the reset. Then I decided to move some of the things I had backed up from the SD card but neglected to deselect the settings box. After restoring much of what I had backed up, It seemed more like how it had been before the reset. I noticed a small icon next to the signal type and strength meter at the top which hadn't been there before the reset (a small white square with rounded edges that has a zig-zag line going through it that kind of looks like a jagged "N"). Instead of saying offline, the app says poor connection, so I will test it on my way home.. I am hopeful. It seems promising. If I have to reset again, I will deselect settings and set things up fresh; I think that will help. I am beginning to think this isn't so much about my OS or any hardware failure as it is the H2O at&t mvno being throttled or something similar. Even when I'm getting 4 bars of 4G, the maps loads very slowly.. nothing at all like it does on WiFi.
I'll post a final edit after I try it out on the ride home this evening.
*****

[Solved]F5121 Unable to call

So during the last few days I've been unable to make any phone calls, and I don't understand what's actually wrong. There's nothing wrong with either the microphone nor the speakers, as they work in other apps. The problem is that I don't hear other people and they don't hear me I don't appear to have connection problems either since other apps work as usual, with or without wifi. I'm running the Concept 4.0 rom.
It's possible that it might be some sort of water damage because I dropped it in snow the other day but that seems unlikely.
So far I've tried:
-wiping and re-installing the rom
-wiping and installing the Poison rom
-formatting and re-installing
-tried installing without fast dormancy
-restoring back to old backups, where there was no problem, using TWRP
-I tried my SIM-card on an older smartphone and there was no problem.
So does it seem like some sort of hardware failure or some software bug?
Edit: As of now, the phone works however, I've yet to discover why it didn't work in the first place. If you know anything I'm still interested.
Edit 2: So it's been nearly a month since I posted and I'm writing this because I want other people who might have the same problem to be able to fix it. The problem with alot of the roms for the F5121 is that they lack options for controlling exactly which networks to operate on. The fix for this is to enter the "hidden" menus by entering *#*#4636#*#* in the dialer, from there you can fine tune alot of the settings.
On Mobile network settings > Prefered network type.
If you force LTE only and go to a location with no LTE, you won't be able to call also people won't be able to call you.

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