Hi everyone
So I've had the mi a1 for a couple of days and so far have not been able to connect to lte network. 3g is working. Apn is set and configured correctly. This is in areas where my Redmi 4x, previous note 4x and all other devices connect to lte networks (same sim card obviously). I have the global version and have immediately installed the September update after setting up the device. I suppose no-one else has issues with lte, otherwise I would have found a thread about it? Are there any suggestions what I can do to find out what the problem is? I tried an app to force lte only but it doesn't connect to a network when set to lte only.
Nevermind. Restarting and cycling through 2g/3g/4g options in mobile network menu resulted in 4g connecting. Still a bit odd though as I'd cycled 3g/4g before and only connecting to 3g signal. Restarted once after the update as well.
Hi guys,
Recently bought a used(6 months) OnePlus 2 - 2003...I was really satisfied with the performance and huge 4gig ram. I use only a single sim, which has 4G. I used the sim with a Nexus 5 until the phone die, but I have never had any signal issue with that phone. In y country not every area has 4G coverage. I currently have Oreo resurrection remix rom, latest build. In my home town 3G, 4G coverage is at it's best and even on 3G coverage I got decent amount of speed with Nexus 5.
The problem is OnePlus 2 doesn't give the slightest speed that H+ is capable even while I'm on 4G. speed is about 500kbps max with 4G. If I chose WCDMA Preferred, from the service menu, it does show H+, but I can't surf on the internet. I'm very disappointed with this phone now. If I were to go to an area with no 4G, It won't get data connection turned on no matter what I do. I even flashed latest OOS 3.6.1 firmware but no luck. I went back to OOS 3.6.1 and it's the same, cant' switch to 3G data.
Man I don't know what to do now, I don't get wifi all the time when I'm away from home. Is there any way to disable 4G and just use H+ or 3G?
I even changed the band in service menu (*#*#4636*#*#)
Also flashed the latest lineage 15.1, CM 13 and no matter what I do
I also tried couple of other sim/ISPs but no luck
Please Help me
Use Network Signal Guru app(root needed). In app, select LTE band lock and deselect your LTE bands(depend on your carrier) use for 4g and exit. It will prevent your phone from connecting to LTE band. Enable the band again to get the LTE.
Hi Folks,
I've bought a A1 Global Version (MDG2) some weeks ago and I've installed Lineage OS as soon as I got it.
Now I've a problem with LTE reception here in Germany where my provider uses LTE band 20 (800 MHz). I've no LTE reception. But the Global Version of the A1 supports band 20.
I've installed a app called Network Signal Guru a view minutes ago which needs root and this app shows me: there is no band 20 at my phone.
So my question is: is there anything I've been able to do what kills my LTE band 20? Maybe because I've installed Lineage OS? Anyone an idea?
Thanks a lot.
Very strange indeed. Here are my LTE Bands, o2 Germany, LOS 15.1 official
Gesendet von meinem Mi A1 mit Tapatalk
Again ...
Gesendet von meinem Mi A1 mit Tapatalk
Huraxdax said:
Hi Folks,
I've bought a A1 Global Version (MDG2) some weeks ago and I've installed Lineage OS as soon as I got it.
Now I've a problem with LTE reception here in Germany where my provider uses LTE band 20 (800 MHz). I've no LTE reception. But the Global Version of the A1 supports band 20.
I've installed a app called Network Signal Guru a view minutes ago which needs root and this app shows me: there is no band 20 at my phone.
So my question is: is there anything I've been able to do what kills my LTE band 20? Maybe because I've installed Lineage OS? Anyone an idea?
Thanks a lot.
Click to expand...
Click to collapse
It looks like xiaomi mi 5x lte band :/
[email protected] said:
Very strange indeed. Here are my LTE Bands, o2 Germany, LOS 15.1 officialView attachment 4580089
Click to expand...
Click to collapse
Thanks a lot for the screen. This means for me: in general it has to work. Do you think you could explain step by step how you installed Lineage OS? I followed these instructions: https://wiki.lineageos.org/devices/tissot/install.
fixxxer102 said:
It looks like xiaomi mi 5x lte band :/
Click to expand...
Click to collapse
As a counter test I installed the stock ROM and here LTE works. So I think it's the international version after all.
Huraxdax said:
Hi Folks,
I've bought a A1 Global Version (MDG2) some weeks ago and I've installed Lineage OS as soon as I got it.
Now I've a problem with LTE reception here in Germany where my provider uses LTE band 20 (800 MHz). I've no LTE reception. But the Global Version of the A1 supports band 20.
I've installed a app called Network Signal Guru a view minutes ago which needs root and this app shows me: there is no band 20 at my phone.
So my question is: is there anything I've been able to do what kills my LTE band 20? Maybe because I've installed Lineage OS? Anyone an idea?
Thanks a lot.
Click to expand...
Click to collapse
Does it have "android one" stenciled on the back of the phone, some chinese sellers have been selling the 5x as a A1 with android one installed.
kudos1uk said:
Does it have "android one" stenciled on the back of the phone, some chinese sellers have been selling the 5x as a A1 with android one installed.
Click to expand...
Click to collapse
Yes, it have "android one" on the back, "Global Version" on the box and also the manual is from the global version. And I've bought the phone directly from Amazon.de. So I think it is the A1. I'm beginning to get the suspicion that the A1 might be defective. The first time I flashed back to stock I got LTE, the second time I didn't. Than I tryed Lineage 16.0. Also no LTE rception. Now I will try one last time the stock ROM and if this also will not work than I will send it back.
Huraxdax said:
Yes, it have "android one" on the back, "Global Version" on the box and also the manual is from the global version. And I've bought the phone directly from Amazon.de. So I think it is the A1. I'm beginning to get the suspicion that the A1 might be defective. The first time I flashed back to stock I got LTE, the second time I didn't. Than I tryed Lineage 16.0. Also no LTE rception. Now I will try one last time the stock ROM and if this also will not work than I will send it back.
Click to expand...
Click to collapse
it's more likely that the firmware included with lineage16 just don't support all bands atm. I'm on lineage15.1 treble and for me it works but for rxample pie sgsi seemed pretty slow in 4G mode.
btw. the camera is out of competition for ~€180.
I was going to post exactly the same question. I see exactly the same thing as you in the supported bands, I've asked in xiaomi's own forums but people there pointed me here.
For me I've even tried reinstalling the stock July image and relocking the bootloader but at the time it didn't seem to make any difference. Luckily before running lineage I did a backup of the efs, which I haven't restored the last time I've tried to reinstall the stock image. I have not tried to unlock any extra bands which could lead to problems if done incorrectly.
Some people here seem to be using lineage and have no problem at all, others like me and you seem to have problems, my only guess is that it _could_ be something sim related, maybe older sims have some setting that is pulled by the phone which leads to some incorrect setting.
Hopefully this is something that can be easily fixed once the problem is found. It's not that it wouldn't be nice/cool if those bands were actually supported the only thing is if the hardware support is not there it doesn't matter what the software says.
By the way, for the people with working B20, what do you have selected in Settings -> Network & Internet > Mobile network > Advanced - > Preferred network type ?
If you dial *#*#4636#*#* and tap Phone information what does it say there? Especially about the "Set preferred network type". A bit more down below what do you see in the measurement info after you enable immediate refresh rate? Any EARFCN of 6300 or close to that?
Have you figured something out. I also tested this on my Xiaomi Mi A1 (Global Version) and Network Signal Guru doesn't show Band20 either.
I haven't tried to flash the stock rom to verify if it's a lineageos specific issue.
I also verified that my version is definitively the global version.
If you need any infos just ask
Phils3r said:
Have you figured something out. I also tested this on my Xiaomi Mi A1 (Global Version) and Network Signal Guru doesn't show Band20 either.
I haven't tried to flash the stock rom to verify if it's a lineageos specific issue.
I also verified that my version is definitively the global version.
If you need any infos just ask
Click to expand...
Click to collapse
So you are missing band 20 too, right? Can you try latest stock. Also could you look at your serial number under settings->system->about phone->Status? It shows "beeaa8e7" on my device which is odd.
This might be a long shot but did you by any chance wreck your persist partition a couple of months ago by installig a bad LOS version and restored it afterwards?
My serial number: 07f61d3c9805
I bought my phone a week ago and flashed the micro G patched LineageOS rom two days ago. This is my LOS build number:
15.1-20180925-microG-tissot
The odd thing is, that most of the time everything is alright (LTE is working). But on spots where I had LTE with my previous phone before, I get edge instead of LTE with my Xiaomi Mi A1.
I will monitor stuff and flash the stock rom to verify if Band 20 is present there and if it's a lineageos issue
How can I check if Band 20 is present without root access on the phone?
Phils3r said:
How can I check if Band 20 is present without root access on the phone?
Click to expand...
Click to collapse
Open your dialer and type *#*#4636#*#* after that a menu opens. Go to Phone Information. Scroll down to "Cell Info Refresh Rate:" and select "Immediate". Look for the Values in MNC and EARFCN. It should be between 6140 and 6449 if you are on band 20. If you are on band 3 MNC says 3 and EARFCN 1600 on my MiA1.
See: http://niviuk.free.fr/lte_band.php
HTH
It clearly says that I'm on Band 3.
But I made my problem less annoying.
This is what I've done:
Dialing *#*#4636#*#*
-> Phone Information
-> Press the Drop-down Menu on the right upper corner
-> Select Radio Band
-> Cellular 800
Now I get LTE way more often.
But this doesn't fix the issue 100%
I stilll have moments where I don't get any phone signal on spots where my old one (oneplus X) had a mobile connection or a gsm connection in general.
I flash back the original rom and relock the bootloader and test again. I also compare the output from Mi A1 and from my onePlus X regarding LTE band.
I've tested the Mi A1 with Lineage and with the Stock Rom.
Setting my Connection to Cellular 800 works quite well. I think my issues are fixed now.
These are the connections I got with the stock firmware (cannot post links yet)
https://abload.de/img/screenshot_einstellunafifa.png
https://abload.de/img/screenshot_20181007-1jmfdj.png
https://abload.de/img/screenshot_20181007-1opev1.png
https://abload.de/img/screenshot_20181007-1uncoo.png
Phils3r said:
I've tested the Mi A1 with Lineage and with the Stock Rom.
Setting my Connection to Cellular 800 works quite well. I think my issues are fixed now.
These are the connections I got with the stock firmware (cannot post links yet)
https://abload.de/img/screenshot_einstellunafifa.png
https://abload.de/img/screenshot_20181007-1jmfdj.png
https://abload.de/img/screenshot_20181007-1opev1.png
https://abload.de/img/screenshot_20181007-1uncoo.png
Click to expand...
Click to collapse
Fron the screenshots it looks like you only get LTE band 3 (1600MHz range). Try changing radio band back to Automatic. Does this make your LTE reception worse?
btw. cellular800 option is missing on my device.
When I change back my Radio Band I don't get LTE on most of the time. So it's getting worse.
Maybe this is also stuff regarding my sim card / provider. I compared it to the signal infos from my girlfriends Motorola Moto G4 Play and it looks exactly the same there.
/: I have more news @saski4711
I couldn't use the calling function when I set to "Cellular 800". So I set it to automatic and i set the prefered network type to "LTE/CDMA/UMTS auto (PRL)" in the phone settings Form "*#*#4636#*#*"
Now calling works and my prefered type of mobile connection is LTE.
/e: I get H+ often instead of LTE. But it's okay for me.
The phone works pretty well in munich.
I have the global version in the UK.
Installed AOSP Extended gsi and everything is great apart from i never seem to get LTE coverage.
The best i do is H+. The apn settings for my carrier are correct.
What could be causing the issue and how do i fix it?
Try with *#*#4636#*#* and there you can choose Lte
I'm running the latest nightly build of LOS 19.1 on my One Plus Five. Suddenly, after years using LTE with no problems, today, I can no longer make LTE connections. This happens when out and about and also at home, where I have solid LTE coverage. Also, my wife's iPhone using the same T-Mobile account makes LTE connections when next to mine. The One Plus 5 reports an Edge connection, but now and then it reports LTE just briefly. I verified my cell carrier account has no issues.
I downloaded the stock OOS 10.0.1 firmware+radio zip package and flashed it via adb sideload. That succeeded, but it didn't help. APN and preferred Network settings are correct, I think (same was what always worked), so I'm wondering if I have a hardware problem.
Is there a way I can verify that the radio hardware is causing the problem? I have the LTE Discovery App, but I'm not informed sufficiently to know how to make sense of all the advanced data. Are there other modems I can try flashing?
I discovered the source of the problem. I had set Private VPMn from Automatic to Off when dealing with a problem connecting to hotel wifi. I didn't realize that would make the phone unable to connect to LTE, but apparently, it did.