Database Users

Note 3 LTE no option for 4G network connection

Hello people,
I have recently acquired a Note 3 LTE (Snapdragon 800) model of the phone which is 4G compatible but for some reason, I get no option to select a 4G network. The only options I have to chose from is 3G/2G (auto connect) and 3G only. I have attached a screenshot below showing what I mean. On other Note 3 LTE phones, I've seen a different set of options such as LTE/WCDMA/GSM etc...
Why is it so? I am running the latest version of android according to Samsung update which is version 4.3. So is this a software issue or what? My service provider says that samsung should release a software update to solve this issue but I don't understand why this is the case. If anyone can clarify this issue for me I would be very glad.
Thanks!

Dimitri Stephan said:
Hello people,
I have recently acquired a Note 3 LTE (Snapdragon 800) model of the phone which is 4G compatible but for some reason, I get no option to select a 4G network. The only options I have to chose from is 3G/2G (auto connect) and 3G only. I have attached a screenshot below showing what I mean. On other Note 3 LTE phones, I've seen a different set of options such as LTE/WCDMA/GSM etc...
Why is it so? I am running the latest version of android according to Samsung update which is version 4.3. So is this a software issue or what? My service provider says that samsung should release a software update to solve this issue but I don't understand why this is the case. If anyone can clarify this issue for me I would be very glad.
Thanks!
Click to expand...
Click to collapse
What region are you in?
What firmware version are you on?
Has your LTE been activated by your provider yet?

radicalisto said:
What region are you in?
What firmware version are you on?
Has your LTE been activated by your provider yet?
Click to expand...
Click to collapse
I am in Beirut, Lebanon.
I also have a Galaxy S4 with the latest updates and I get a 4G connection in certain areas. So yes, 4G had already been activated by my provider.
I've attached another screenshot because I am not sure what you mean by firmware version.

Can you compare the S4 and Note 3 "apn settings" to see if they are the same? You might have to manually input your carrier's apn settings into the note.

440bro said:
Can you compare the S4 and Note 3 "apn settings" to see if they are the same? You might have to manually input your carrier's apn settings into the note.
Click to expand...
Click to collapse
Yup try this and see ^^^ :good:

440bro said:
Can you compare the S4 and Note 3 "apn settings" to see if they are the same? You might have to manually input your carrier's apn settings into the note.
Click to expand...
Click to collapse
The apn settings are the same since they have been both configured automatically when the service provider sent the settings to be saved.
What else could it be?

Dimitri Stephan said:
I am in Beirut, Lebanon.
I also have a Galaxy S4 with the latest updates and I get a 4G connection in certain areas. So yes, 4G had already been activated by my provider.
I've attached another screenshot because I am not sure what you mean by firmware version.
Click to expand...
Click to collapse
Try flashing one of the other LTE N9005 roms and see if you get the listings under settings appear( backup first). I know some roms take this option out like at&t here in the states.
---------- Post added at 10:01 AM ---------- Previous post was at 09:55 AM ----------
Better yet try this:
open your dialer and type *#2263# and see if you get the lte option.

daraj said:
Try flashing one of the other LTE N9005 roms and see if you get the listings under settings appear( backup first). I know some roms take this option out like at&t here in the states.
---------- Post added at 10:01 AM ---------- Previous post was at 09:55 AM ----------
Better yet try this:
open your dialer and type *#2263# and see if you get the lte option.
Click to expand...
Click to collapse
Alright so good news. I received a message telling me that there is a new firmware update available, so I downloaded and installed it. Now I get a 4G option even though I never once got a 4G signal during the day. I guess waiting is my only option now. What do you think?

Dimitri Stephan said:
Alright so good news. I received a message telling me that there is a new firmware update available, so I downloaded and installed it. Now I get a 4G option even though I never once got a 4G signal during the day. I guess waiting is my only option now. What do you think?
Click to expand...
Click to collapse
thats good but still you should have the lte option. did u try the code?

daraj said:
thats good but still you should have the lte option. did u try the code?
Click to expand...
Click to collapse
I did but got this message: "Connection problem or invalid MMI code". What is this code supposed to tell me?

Hi guys.
I am facing a somewhat similar issue. What makes it different is that I had the LTE option when I bought the Note 3, although there was no 4G service in the country at that time. However, I think it was after an update that I no longer have the LTE option available to in my network settings. Right now, in my home country, LTE hasnt yet been introduced. But like I said, there was no LTE in my previous country of residence either yet I had the LTE option.
By the way, the code *#2263# does nothing at all on my set.
Appreciate any feedback and resolutions.
Thanks

Dimitri Stephan said:
Hello people,
I have recently acquired a Note 3 LTE (Snapdragon 800) model of the phone which is 4G compatible but for some reason, I get no option to select a 4G network. The only options I have to chose from is 3G/2G (auto connect) and 3G only. I have attached a screenshot below showing what I mean. On other Note 3 LTE phones, I've seen a different set of options such as LTE/WCDMA/GSM etc...
Why is it so? I am running the latest version of android according to Samsung update which is version 4.3. So is this a software issue or what? My service provider says that samsung should release a software update to solve this issue but I don't understand why this is the case. If anyone can clarify this issue for me I would be very glad.
Thanks!
Click to expand...
Click to collapse
If your phone is rooted (seems like it isn't) then you can manually edit a config file to enable LTE. If not, you'll be waiting for another OTA update I think.

Dimitri Stephan said:
Alright so good news. I received a message telling me that there is a new firmware update available, so I downloaded and installed it. Now I get a 4G option even though I never once got a 4G signal during the day. I guess waiting is my only option now. What do you think?
Click to expand...
Click to collapse
sadi2e you have to go Touch or Alfa to replace your SIM with a 4g compatible one, btw ignore the costumer support telling you that you won't receive any signal if you get out of 4g zones,they are total idiots
I replaced mine and now getting 13 14 mb/s speeds
Contact me here if you need any further assistance

lesalloum said:
sadi2e you have to go Touch or Alfa to replace your SIM with a 4g compatible one, btw ignore the costumer support telling you that you won't receive any signal if you get out of 4g zones,they are total idiots
I replaced mine and now getting 13 14 mb/s speeds
Contact me here if you need any further assistance
Click to expand...
Click to collapse
Nice to see a Lebanese on these forums. I've already changed my sim card to the 4G capable one but I still don't see a 4G icon wherever I go.

Dimitri Stephan said:
Nice to see a Lebanese on these forums. I've already changed my sim card to the 4G capable one but I still don't see a 4G icon wherever I go.
Click to expand...
Click to collapse
Im from there too originally. Did you change your modem at some point? It could be that your current modem is not LTE capable. Or let me ask you this: Did you install a stock rom from a different country other then the one that your device is intended to? bas bi beirut fi LTE aw wen maken?

daraj said:
Im from there too originally. Did you change your modem at some point? It could be that your current modem is not LTE capable. Or let me ask you this: Did you install a stock rom from a different country other then the one that your device is intended to? bas bi beirut fi LTE aw wen maken?
Click to expand...
Click to collapse
What modem are you talking about? The rom is stock. LTE is only available in Beirut and some other places surrounding it.

hi
i have got same issues with LTE
please help

how ?
Dimitri Stephan said:
Alright so good news. I received a message telling me that there is a new firmware update available, so I downloaded and installed it. Now I get a 4G option even though I never once got a 4G signal during the day. I guess waiting is my only option now. What do you think?
Click to expand...
Click to collapse
Hello , I have a USIM, and note3 4G ( bought from KSA and tried on 4G in Dubai and KSA) . I did not get any updates on wifi nor through kies .
Did you change you upload a new platform ( kitkat) before you got the update ? or did you just wake up and found an update ?
PS : I live in Beirut Lebanon too .
Thanks

Me too with the same problem
I bought my phone from Dubai.. i saw the LTE option when i used my phone there.. but then i flashed Poland's latest firmware and rooted my device.. now i am in South Asia , and my phone doesn't show any LTE option..! :silly: weird..

I'll say it again: Each CSC has a different list of 4G activated providers that are not directly related to the region they are in.
Which means that a device can have 4G activated for 50 providers, just not the one your SIM belongs to. As such, if you insert the SIM, the 4G toggle is disabled.
Each provider has to individually pass on the fact that they have 4G to Samsung. Even then it's not activated for each CSC.
As such, my DBT Note 3 had 4G on T-Mobile NL months before the TL and PHN ROMs had it.
Also, South Asia uses a different frequency your EU firmware can't detect.

[Q] Nexus 4 can't find AWS network

I Have a brand new SIM from WIND mobile in Ontario that came in another phone. I have this Nexus 4 kicking around so I popped in the WIND sim, but it does not connect. When I go to search for mobile networks in settings, it finds all the non AWS carriers (including the 'WIND away' network) but does not show Wind 3G (this is what the correct network lists as on my phone supplied by them). I have played around a bit in the *#*#4636#*#* menu, but nothing seems to make it work. Is the AWS band disabled in some Nexus 4s, and is there a way to enable it?

Welcome to XDA
Okay, first of all to avoid duplicate threads please use the search function of XDA to find your answer, or do a little Googling...
Anyways to answer you question, the AWS band of the Nexus 4 is disabled by Google to lower costs. That may sound crazy, but the story goes something like this:
If you didn't already know, The Nexus 4 is based off of the LG Optimus G, and has a lot of the same insides...
The same board was used for the nexus 4 and Optimus G, and on some of the G models they had LTE on band 4 and 17.
The nexus 4 never went through the FCC for LTE so Google disabled it because it wasn't worth the trouble of supporting 1 band.
Now, your answer: Depending on the Android Version, it maybe as simple as tinkering with the Info menu you were in. (4.2.1)
Newer versions were harder to enable LTE
You need to figure out what you need to do depending on the newer version.
You may need something as simple as an older radio
You might need to unlock your phone's boot loader, (which requires a factory reset), or maybe even have to flash a custom recovery (like CWM or TWRP) and custom rom.
It would really help I knew more info about the device likel what Android version,if its rooted, or has an unlocked bootloader,etc.
If you don't know what any of this means DON'T WORRY, there is an entire community of people willing to help

Sorry I should have gone into more detail. I have done the various tricks to try to enable LTE, but is that the same as enabling the AWS network? I was under the impression from the WIND folks that the Nexus4 worked for them stock.
As for the firmware version, I have tried on 4.2, 4.2.2, KitKat (4.4 I think?). I have tried after flashing the stock roms of each of these versions as well as after rooting. I have also tried flashing different radio versions to no success.
I should also mention that under the "4636" menus I have tried to click "select radio band" from the menu, but this just crashes the process and goes back to the first menu.
So does no LTE mean no AWS?

Hmmm...
First of all, NEVER click Select Radio Band, like you said, it crashes both the menu and resets your connection. Bug? Unfinished feature? No one knows.
You are supposed to click on GSM/LTE button instead of WCDMA preferred.
If that sticks then you might be done on (4.2.1)
If on higher version, then get the older .33 or .27 radio or a hybrid radio
AWS is the band the nexus 4 has unofficial support for, so its actually the opposite:
No AWS=No LTE
So try getting 4.2.1 via factory images and try getting that working okay (WCDMA→GSM/LTE)?
If not then tell me

How about 4.2 (JOP40C)? I have that currently but I can go back and get 4.2.1 if necessary.
And just to put the AWS/LTE bit to rest, can I have (on this or any other phone) AWS without LTE, or are they synonymous?
I am playing with it right now without the sim becaue it is busy in the other phone. When I switch to GSM/LTE AUTO, I find AT&T as well as the big three Canadian networks, but still don't see WIND. I did not see the AT&T on WCDMA, but its spotty near the border here anyways.

fdupbad said:
How about 4.2 (JOP40C)? I have that currently but I can go back and get 4.2.1 if necessary.
And just to put the AWS/LTE bit to rest, can I have (on this or any other phone) AWS without LTE, or are they synonymous?
I am playing with it right now without the sim becaue it is busy in the other phone. When I switch to GSM/LTE AUTO, I find AT&T as well as the big three Canadian networks, but still don't see WIND. I did not see the AT&T on WCDMA, but its spotty near the border here anyways.
Click to expand...
Click to collapse
Sorry for the late reply but,
In 4.2 all you have to do is switch to GSM/LTE and switch to correct APN's in the phone settings
You can AWS on 3G as far as I know but it won't make a difference...
The only reason we are using AWS band for LTE is because its the only one the Nexus 4 can see.
As for the last paragraph what do you mean you cant see WIND? What do you mean by "seeing"?
Can you clarify?
Sent from my Nexus 4

Could you try this small app (should trigger the radio band select menu) to see what options do you have?
https://play.google.com/store/apps/details?id=de.mangelow.network
For the Wind Mobile AWS, you will need the WCDMA option. This is what Wind Mobile use, not LTE.
If you will be able to select the WCDMA option and still no Wind 3G/HSPA, then we will tinker with the APN settings.
Sent from my Nexus 4 using xda premium

googleygoggles said:
Sorry for the late reply but,
In 4.2 all you have to do is switch to GSM/LTE and switch to correct APN's in the phone settings
You can AWS on 3G as far as I know but it won't make a difference...
The only reason we are using AWS band for LTE is because its the only one the Nexus 4 can see.
As for the last paragraph what do you mean you cant see WIND? What do you mean by "seeing"?
Can you clarify?
Sent from my Nexus 4
Click to expand...
Click to collapse
By 'seeing' I mean when I go to the network selection / search function in settings. When I click to search for network providers, I do not see WIND3G as an option (or any WIND branded network). On the phone they provided me, when I search for networks I have several options that are labelled as WIND. If I recall correctly, I think I have about 12 choices between various providers, whereas with the Nexus 4 I just show three selections.
@DupleX01, Thanks. I will give that a shot when I get a few minutes to play with this at home. It has been a couple of weeks since I have worked with the Nexus.

DupleX01 said:
Could you try this small app (should trigger the radio band select menu) to see what options do you have?
For the Wind Mobile AWS, you will need the WCDMA option. This is what Wind Mobile use, not LTE.
If you will be able to select the WCDMA option and still no Wind 3G/HSPA, then we will tinker with the APN settings.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
It's a slow day at work, so I am back on this. I have tried setting the radio to WCDMA only, but this does not make a difference. The only network I can see with the SIM in is "WIND away", which I believe is Rogers. So I am on roaming. Should I flash a different radio to the phone? Anybody got suggestions on which radio is the best version for use on WIND?
With the SIM in, the APN settings are already correct for WIND, but I am not finding their network.
Also just for kicks I flashed kitkat (stock) again, including the radio that comes with the ZIP. No changes in network availability.. Gonna leave it on this for now unless someone suggests that it might be better to revert to 4.2.1 or another version.

fdupbad said:
It's a slow day at work, so I am back on this. I have tried setting the radio to WCDMA only, but this does not make a difference. The only network I can see with the SIM in is "WIND away", which I believe is Rogers. So I am on roaming. Should I flash a different radio to the phone? Anybody got suggestions on which radio is the best version for use on WIND?
With the SIM in, the APN settings are already correct for WIND, but I am not finding their network.
Also just for kicks I flashed kitkat (stock) again, including the radio that comes with the ZIP. No changes in network availability.. Gonna leave it on this for now unless someone suggests that it might be better to revert to 4.2.1 or another version.
Click to expand...
Click to collapse
Based on your findings, I would say everything is alright on hardware side (APN is good, radio ok for WCDMA). So, it could be a glitch with Wind micro sim card. Still bonded to the previous phone IMEI what not. Make sure you now the serial of the micro sim, your imei of the new phone and give them (Wind Mobile tech support) a call.
Sent from my Nexus 4 using xda premium

VoLTE on T-Mobile USA

One of my friends came from overseas a few months ago with VoLTE working on Tmobile US. At least I thought it was.
I did not think much of it at the time, but now that I have my own Z5, and can't get it to work, I'm curious.
Is there any special APN settings needed for VoLTE on TmoUS?
WHen i received my Z5, I noticed there was not any option for VoLTE. I went ahead and flashed the a singapore rom and it is here now but still cannot get it to work. I will try different settings and update.
I am also going to go through a few more roms to see if they work out of the box with it.
WIll it not ever work unlesss TmoUS certifies this device specifically? I don't think that is the case.

It's carrrier dependant

VoLTE uses the SIP protocol for communication. Aside of the implementation of the handling of such calls you would need the necessary data for registering at the server including the server's address, username and password.

I bought my international version from Amazon and turns out it is a Taiwanese version.
I can turn volte on or off but I can't tell it is working or not cause I don't know how to test it.

Testing it is pretty straightforward. Make sure you're on a 4G (LTE) network and place a phone call. Watch to see if you're signal changes to something other than where it started.
My experience is that I have 4G (LTE) in fewer places than 3G, as 4G seems to be less awesome at penetrating thick buildings. So, I don't see what the advantage/concern of VoLTE working or not is. But, I'm happy to learn.

Yakkosmurf said:
Testing it is pretty straightforward. Make sure you're on a 4G (LTE) network and place a phone call. Watch to see if you're signal changes to something other than where it started.
My experience is that I have 4G (LTE) in fewer places than 3G, as 4G seems to be less awesome at penetrating thick buildings. So, I don't see what the advantage/concern of VoLTE working or not is. But, I'm happy to learn.
Click to expand...
Click to collapse
When I make a call, the icon switch from 4G into 3G and H+ (back and forth between the two).
Does it mean no VoLte?

misbehave said:
When I make a call, the icon switch from 4G into 3G and H+ (back and forth between the two).
Does it mean no VoLte?
Click to expand...
Click to collapse
I have the same question too.

That's my understanding of the problem. With my AT&T iPhone, it stays reading LTE when I place calls.

If you see switching from LTE to another network upon dialing or receiving a call and going back to LTE once hung up it's a very strong indication that VoLTE does not work.

andiling said:
If you see switching from LTE to another network upon dialing or receiving a call and going back to LTE once hung up it's a very strong indication that VoLTE does not work.
Click to expand...
Click to collapse
THat is correct. My phone switches from 4G to H+ when on a phone call...
After many hours with t-mobile, and also at work, i was informed that t-mobiles VoLTE is proprietary and only tmoUS branded devices are usually the ones to get VoLTE to work with them.
Maybe in the future that will change, they said. oh well.

Until now every provider's solution is proprietary as the 3gpp standard is not finalized yet. So we need to be patient...

[N9005] 4G was working. Now it's not. Help!

One morning when I woke up my N9005 was stuck in the boot animation. I waited a while but I had to hold the power button in to force a power off. Since then I have had no 4G at all. 4G was working before this. Can anyone suggest anything that might re-enable 4G?

Contact your operator.

AndrOmega said:
Contact your operator.
Click to expand...
Click to collapse
It's nothing to do with my operator. I have tried two different SIMs from two different operators that both worked with 4G before. I own the phone, it came from eBay but as I said it was doing 4G before.
--
Brian G. (In the UK)

More info
See attached screenshots:
I'm not sure why "Available CSC Codes" is blank.
Could that be part of the problem?

bdg2 said:
See attached screenshots:
I'm not sure why "Available CSC Codes" is blank.
Could that be part of the problem?
Click to expand...
Click to collapse
Reflash your phone with the latest version from sam mobile

AndrOmega said:
Reflash your phone with the latest version from sam mobile
Click to expand...
Click to collapse
I already did that. At least I think I did it right. Afterwards it started up exactly as usual. There was no extra optimising apps like after an upgrade. I used Odin. Do you think I did it right? I also tried a factory reset. Still no 4G.
--
Brian G. (In the UK)

bdg2 said:
I already did that. At least I think I did it right. Afterwards it started up exactly as usual. There was no extra optimising apps like after an upgrade. I used Odin. Do you think I did it right? I also tried a factory reset. Still no 4G.
--
Brian G. (In the UK)
Click to expand...
Click to collapse
I can't help anyhow but what I do if I loose LTE connection I force it back with 4G Switcher app. You choose LTE only and it should connect (though I can't call or receive calls in LTE only mode) so what I do is when LTE conects I swap mode to LTE/Gsm auto and LTE stays as long as I'm on LTE area (until I somehow loose LTE again in area where LTE is available). Try that out maybe it will drive you to some new conclusions what the issue may be.

boloboss said:
I can't help anyhow but what I do if I loose LTE connection I force it back with 4G Switcher app. You choose LTE only and it should connect (though I can't call or receive calls in LTE only mode) so what I do is when LTE conects I swap mode to LTE/Gsm auto and LTE stays as long as I'm on LTE area (until I somehow loose LTE again in area where LTE is available). Try that out maybe it will drive you to some new conclusions what the issue may be.
Click to expand...
Click to collapse
Do you mean this one?
https://play.google.com/store/apps/details?id=com.tapbase.LTEswitcher
It says it's incompatible with my device!
Also it sounds like you had the situation where you lose the ability to select "LTE/WCDMA/GSM (auto connect)" and can only select "WCDMS/GSM (auto connect)". I have not lost the ability to select "LTE/WCDMA/GSM (auto connect)".

bdg2 said:
Do you mean this one?
https://play.google.com/store/apps/details?id=com.tapbase.LTEswitcher
It says it's incompatible with my device!
Also it sounds like you had the situation where you lose the ability to select "LTE/WCDMA/GSM (auto connect)" and can only select "WCDMS/GSM (auto connect)". I have not lost the ability to select "LTE/WCDMA/GSM (auto connect)".
Click to expand...
Click to collapse
1- Yes, that's the one
2- It works on my Note 3
3- As to your assumption...well I'm not sure what you talk about. I'll explain my issue. Sometimes when I'm on LTE available area my phone connects to HDSPA+. Then I do what I described (I choose LTE on this app to force connect via LTE). I don't know do I loose "ability to select "LTE/WCDMA/GSM (auto connect)" as you said. To be specific what are you reffering with it to? To phone settings or to this app setiings? All I can choose on phone settings is 2g,3g and 4g. There's no X/Y auto connect. This option is in apps settings though and I don't really care what I loose there as long as it works when I want to force LTE with it. I'm courius why it's not compatible with your device. What phone do you have?
All in all in the end use of this app won't solve your issue permanently but with it you could make sure LTE receiver and LTE drivers on your phone system works. Then you could dig down further. You would just know that LTE works at all on your phone.

boloboss said:
1- Yes, that's the one
2- It works on my Note 3
3- As to your assumption...well I'm not sure what you talk about. I'll explain my issue. Sometimes when I'm on LTE available area my phone connects to HDSPA+. Then I do what I described (I choose LTE on this app to force connect via LTE). I don't know do I loose "ability to select "LTE/WCDMA/GSM (auto connect)" as you said. To be specific what are you reffering with it to? To phone settings or to this app setiings? All I can choose on phone settings is 2g,3g and 4g. There's no X/Y auto connect. This option is in apps settings though and I don't really care what I loose there as long as it works when I want to force LTE with it. I'm courius why it's not compatible with your device. What phone do you have?
All in all in the end use of this app won't solve your issue permanently but with it you could make sure LTE receiver and LTE drivers on your phone system works. Then you could dig down further. You would just know that LTE works at all on your phone.
Click to expand...
Click to collapse
"LTE/WCDMA/GSM (auto connect)" is a setting on my phone. See my Screenshot_A.png above. It tells the phone to automatically switch between LTE (4G), WCDMA (3G) and GSM (2G). The other choices don't include 4G. I reach it by Settings / Connections / More networks / Mobile networks / Network mode.
Is you phone rooted? Mine isn't. Could that be why the app doesn't like my phone?

Further info: apparently the phone was originally Portuguese but has been flashed with UK BTU firmware. However as I said before it definitely did do 4G when I first got it. Samsung tried to tell me there was some kind of update that might has disabled 4G in the UK for this device. Sounds like a made up excuse to me.
--
Brian G. (In the UK)

What baseband and bootloader are on the phone? Do they match the uk firmware?

audit13 said:
What baseband and bootloader are on the phone? Do they match the uk firmware?
Click to expand...
Click to collapse
I think so. Isn't the info in my screenshots of Samsung Phone Info Plus (in a post a further up the thread) enough to confirm?
If not could you guide me how I can check. Thanks.

I compared it to uk firmware on sammobile.com and it seems to match. Maybe you need to flash the entire uk firmware again in Odin?

Still same. I've taken it to a Samsung service centre now.
--
Brian G. (In the UK)

bdg2 said:
Still same. I've taken it to a Samsung service centre now.
--
Brian G. (In the UK)
Click to expand...
Click to collapse
It's back, and it's working fine now. And, nice surprise, it was apparently just inside it's guarantee period so I didn't have to pay.
I'm not sure what they did but it's back on Portuguese firmware, which doesn't seem to matter, I just select English (UK) after factory reset and all is well.
Oddly the WiFi adapter has a new MAC address but the magnetic field sensor must be the original one since it's calibration is way off exactly as it was originally. (You have to calibrate it after every reboot by rotating the device in three axis if you want compass functions to work).
--
Brian G. (In the UK)

Can't make or receive calls

Hi,
Since I got the phone, I was unable to receive or make outgoing calls on my MI A1.
Data and txt msging works and I have tried separate sim cards that work in a different phone and was unable to call from the MI A1 so it isn't my sim card that is the problem.
I have tried putting my sim in both the first and the second slot to no avail.
When I have it set to 4g or 2g it begins a call and it hangs up automatically after a minute if I use 3g it is unable to make a call and instantly hangs up.
The phone is running 8.0.0 version of Android.
Thanks in advance for any advice.

Wolf_Knight said:
Hi,
Since I got the phone, I was unable to receive or make outgoing calls on my MI A1.
Data and txt msging works and I have tried separate sim cards that work in a different phone and was unable to call from the MI A1 so it isn't my sim card that is the problem.
I have tried putting my sim in both the first and the second slot to no avail.
When I have it set to 4g or 2g it begins a call and it hangs up automatically after a minute if I use 3g it is unable to make a call and instantly hangs up.
The phone is running 8.0.0 version of Android.
Thanks in advance for any advice.
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Check your APN settings in the phone, my network provider did not send them automatically and I had to input them in manually, when I checked my APN it was blank!

kudos1uk said:
Check your APN settings in the phone, my network provider did not send them automatically and I had to input them in manually, when I checked my APN it was blank!
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I went into network settings and checked my APN settings, they weren't blank. However, I tried and made a new APN that my provider uses, still no luck when calling.
While in the network setting I tried choosing a network and registered my provider's network. This time I got the error notification "Selected network is unavailable" with the dailer giving me "Mobile network not available"
Is it possible that calling is not supported, but 4g and data are?

Wolf_Knight said:
I went into network settings and checked my APN settings, they weren't blank. However, I tried and made a new APN that my provider uses, still no luck when calling.
While in the network setting I tried choosing a network and registered my provider's network. This time I got the error notification "Selected network is unavailable" with the dailer giving me "Mobile network not available"
Is it possible that calling is not supported, but 4g and data are?
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What country are you in and what band does your provider use?
Also what A1 do you have, it's printed on the back of phone: MDI2 (India) & MDG2 (Global)?
If it's global it will also have a big red sticker on both sides of the box saying "Global Version".
Even with a global phone, still check the bands your provider uses matches the bands your phone has.
MDI2 has limited bands, no band 20 for instance which would stop it connecting in many country's.
---------- Post added at 22:50 ---------- Previous post was at 22:49 ----------
Sorry I just read you have data so it cant be the bands Mmmmmmm.

kudos1uk said:
What country are you in and what band does your provider use?
Also what A1 do you have, it's printed on the back of phone: MDI2 (India) & MDG2 (Global)?
If it's global it will also have a big red sticker on both sides of the box saying "Global Version".
Even with a global phone, still check the bands your provider uses matches the bands your phone has.
MDI2 has limited bands, no band 20 for instance which would stop it connecting in many country's.
---------- Post added at 22:50 ---------- Previous post was at 22:49 ----------
Sorry I just read you have data so it cant be the bands Mmmmmmm.
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My provider is US t-mobile.
On Amazon it said global and unlocked.
Model number on the back is MDG2

Wolf_Knight said:
My provider is US t-mobile.
On Amazon it said global and unlocked.
Model number on the back is MDG2
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You should be OK the global supports:
Mode Band
GSM B2, B3, B5, B8
UMTS B1, B2, B5, B8
FDD-LTE B1, B3, B4, B5, B7, B8, B20
TDD-LTE B38, B40
See here for more info: https://forum.xda-developers.com/mi-a1/help/mi-a1-tmobile-california-usa-t3692455

Wolf_Knight said:
My provider is US t-mobile.
On Amazon it said global and unlocked.
Model number on the back is MDG2
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Did you ever figure it out? I'm on t-mobile in the US also and calls only work sometimes. I notice that when making or receiving a call the 4G indicator in the status bar will disappear. Seems like the phone is switching to a different band just to make calls and sometimes it can't switch fast enough so the call is missed.

KHANrad_SIN said:
Did you ever figure it out? I'm on t-mobile in the US also and calls only work sometimes. I notice that when making or receiving a call the 4G indicator in the status bar will disappear. Seems like the phone is switching to a different band just to make calls and sometimes it can't switch fast enough so the call is missed.
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Nope, I returned it.

Mine worked perfectly for nearly a year, and started this about a month ago after an update. So I can no longer return it, but it's pretty useless without calling capability. Anybody else have any ideas?

I have the same problem.

Lorwik said:
I have the same problem.
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did you ever figure anything out? i'm having this issue too now

jchart91 said:
did you ever figure anything out? i'm having this issue too now
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No