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Signal/Network problem

Hi guys,
I've been having this problem with my N5.
Its a d820 model, unlocked and rooted.
I have no signal, cant register to the network either.
I can use wifi with no problem too.
I changed the micro sim card with other carriers, same issue. I asked for a new micro sim to my carrier too (not cut), but still getting the same problem.
It's worth mentioning that the micro sim works flawlessly. Im using it everyday on an HTC One S and signal and data works perfectly.
When I first get the simcard on the N5, it asks for a reboot, after it comes back up, it shows strong signal, but I can't make any call or receive, no messages either.
After a few minutes, the signal goes down and it shows only emergency calls.
Going into mobile networks and searching for my carrier takes quite some time, but no matter how many times I try to select my carrier,it always comes back with not able to register in the network.
I did a factory reset, and went back to stock, and then performed the system updates to 4.4.4.
I flashed a couple of radios as well, but no luck.
The IMEI shows well, and its the same that shows on the box, so I guess no problems there with a corrupt IMEI.
Has anyone else had any problem like this? Any suggestions?
I've been reading some threads here, and I still have to try a different kernel/ROM, but if anyone else knows of a similar situation, I would appreciate any suggestions.

May be it has something to do wid preferred network...
If u use 3g go to dialpad
Type
*#*#4636#*#* phone info
Select modem as wcdma only...
If u use lte select lte only... See if this works

I think I already tried that, but cant remember for sure
Will give it a shot, thanks

Is the phone second hand?
Have you checked if the IMEI is blocked by the network?

sounds like you bought a used phone that has been blacklisted. if blacklisted, your phone wont work on any US carrier, and many Canadian carriers.

Yes its a second hand phone, and I don't know if it is blacklisted on USA, but Im in South America, so that shouldnt be a problem
And there are no carriers here working with N5 so they cant blacklist the IMEI either
(This doesnt mean that the phone doesnt work here, actually, my wife has another N5 that works like a charm here)

masok said:
Yes its a second hand phone, and I don't know if it is blacklisted on USA, but Im in South America, so that shouldnt be a problem
And there are no carriers here working with N5 so they cant blacklist the IMEI either
(This doesnt mean that the phone doesnt work here, actually, my wife has another N5 that works like a charm here)
Click to expand...
Click to collapse
the carriers dont have to work with the n5 to blacklist it. in other words, they can blacklist any phone that connects to their network. as soon as you connect to the network, they know your imei and other info about your phone. anyways, they blacklist your imei, so when your phone tries to connect, it cant. the agreement that carriers have in the US and Canada, could possibly be for all of the americas, or, in south america, they could have their own blacklist.
---------- Post added at 12:25 PM ---------- Previous post was at 12:23 PM ----------
googling, i found that carriers worldwide are sharing blacklists.
The GSMA, an international association of wireless carriers, also keeps a database that wireless carriers worldwide could check to prevent stolen phones from being reactivated on their networks.
Click to expand...
Click to collapse

I will check on that, I think I can just call my carrier and ask if that IMEI is blacklisted or not

masok said:
I will check on that, I think I can just call my carrier and ask if that IMEI is blacklisted or not
Click to expand...
Click to collapse
yup, thats the best thing to do. the people that first answer the phone, customer service, probably wont be able to help, maybe someone in tech. or, use this website to check(there art other sites as well).. http://swappa.com/esn

Well I just checked. IMEI not blacklisted on my carrier, also checked with swappa, not blacklisted either.
I used the *#*#4636#*#* to select wcdma as well as other options there, but still no go.
Also, under Mobile network settings, changed the preferred network type to LTE, 3G and 2G, but no luck
Tried Choose automatically the network, but still getting the message that its unable to register to the network right now and that I should try again later
I guess Im left with flashing some other ROM/kernel to see if it helps, unless someone has any other suggestions

masok said:
Well I just checked. IMEI not blacklisted on my carrier, also checked with swappa, not blacklisted either.
I used the *#*#4636#*#* to select wcdma as well as other options there, but still no go.
Also, under Mobile network settings, changed the preferred network type to LTE, 3G and 2G, but no luck
Tried Choose automatically the network, but still getting the message that its unable to register to the network right now and that I should try again later
I guess Im left with flashing some other ROM/kernel to see if it helps, unless someone has any other suggestions
Click to expand...
Click to collapse
call your provider first, problem can be on their end.
---------- Post added at 07:02 PM ---------- Previous post was at 06:58 PM ----------
also, what kind of nexus 5 is it, a d820 or d821? it would make a difference signal-wise. ones for north america, ones for europe. honestly, i have no idea which you would need http://www.phonearena.com/news/Differences-between-the-two-Nexus-5-models-D820-and-D821_id48985

I don't know if the problem is with the carrier, since I'm using the very same simcard with another phone and I have data and network with no problem.
The phone is d820, but I know it works here (my wife has the same one), network 2g and 3g work well here, LTE is the only thing that won't work here with this phone but I don't care about that
I'll keep looking just in case, and I guess tomorrow I'll flash different ROM
Sent from my Nexus 5 using XDA Free mobile app

masok said:
I don't know if the problem is with the carrier, since I'm using the very same simcard with another phone and I have data and network with no problem.
The phone is d820, but I know it works here (my wife has the same one), network 2g and 3g work well here, LTE is the only thing that won't work here with this phone but I don't care about that
I'll keep looking just in case, and I guess tomorrow I'll flash different ROM
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
If the problem is wid radio flashing a different rom won't matter ..
Have u tried flashing a factory image ?

I know flashing a new ROM wont help with radio, but I've seen that using *#*#4636#*#*, going into phone information and then Select Radio Band, gives me an error and force closes.
I've seen some threads about that, and someone saying that it was working on a CM ROM, so I was thinking of trying that in order to be able to select the radio band and see if that helps.
About the factory image, yes, I used the google images to go back to stock, and then performed the system updates.

Well I flashed Slim Rom, and was able to get into *#*#4636#*#* to change radio band. Tried them all, no change.
Played around with the preferred networks and no luck either.
I'm officially out of ideas, but I'll keep digging around to see what I can find.
Any suggestions welcome.
Also, I know that there is a known issue with the GPS signal on some Nexus 5, and there are a few videos on Youtube showing how to fix it (basically opening the back of the phone, and sticking a piece of paper under the connector).
Does anyone know if there is something similar happening with the radio? Does anyone have a photo of the phone showing which part would be the antenna?
One additional thing I noticed.
If I switch, or just take out and reinsert the micro sim, the phone asks for a reboot. After doing that, when the phone boots up, I see I have network (full bars), going into mobile operators, I can see my carrier, and I can register too. But I cant make or receive any calls or messages.
During this 10 minutes that I have this sort of fake signal, if I go into *#*#4636#*#* and phone info, I can see my carrier, but it doesn't show my phone number. Weird.

Lg nexus 5 network issue
i am facing the same issue with exus 5 .In my hometown in India,the phone simply shows "Emergency calls only" and shifts to normal working mode with full network coverage once i travel to other parts of my state (parts which probably has a better signal strength ,i dont know ).i have tried out changing the sim card and a factory data reset ..Both didnt help ..
masok said:
Hi guys,
I've been having this problem with my N5.
Its a d820 model, unlocked and rooted.
I have no signal, cant register to the network either.
I can use wifi with no problem too.
I changed the micro sim card with other carriers, same issue. I asked for a new micro sim to my carrier too (not cut), but still getting the same problem.
It's worth mentioning that the micro sim works flawlessly. Im using it everyday on an HTC One S and signal and data works perfectly.
When I first get the simcard on the N5, it asks for a reboot, after it comes back up, it shows strong signal, but I can't make any call or receive, no messages either.
After a few minutes, the signal goes down and it shows only emergency calls.
Going into mobile networks and searching for my carrier takes quite some time, but no matter how many times I try to select my carrier,it always comes back with not able to register in the network.
I did a factory reset, and went back to stock, and then performed the system updates to 4.4.4.
I flashed a couple of radios as well, but no luck.
The IMEI shows well, and its the same that shows on the box, so I guess no problems there with a corrupt IMEI.
Has anyone else had any problem like this? Any suggestions?
I've been reading some threads here, and I still have to try a different kernel/ROM, but if anyone else knows of a similar situation, I would appreciate any suggestions.
Click to expand...
Click to collapse

praveenkrishnan said:
i am facing the same issue with exus 5 .In my hometown in India,the phone simply shows "Emergency calls only" and shifts to normal working mode with full network coverage once i travel to other parts of my state (parts which probably has a better signal strength ,i dont know ).i have tried out changing the sim card and a factory data reset ..Both didnt help ..
Click to expand...
Click to collapse
Has anyone been able to track down the issue and get it resolved? I'm facing the same situation, and almost taking it to an authorized LG support so that they can change the motherboard.

Z3 Dual D6633 SIM compatibility / issues

Hi, I've got a Z3 dual D6633 which I want to use with an EE SIM in the UK. I've tried a cut down microsim and been into the EE shop and tried one of their nano SIMs but both don't work correctly in the phone.
The cut down SIM makes a service phone.android.com or something like that continually crash and doesn't connect to the network.
The one I tried in the shop just doesn't connect to the network.
This is on 23.0.F.1.74 and .82 I noticed in the release notes for .82a fix for Yoga SIMs in Russia but don't know what the problem there was, but wonder if it is linked. All other UK Sims work including 3, Lyca, giffgaff, Vodafone, virgin just not EE. has anyone got an EE one working or had similar problems?
I did notice that an app/widget I use called phono to show network info and signal strength usually shows the IMEI when no SIM inserted or the MSISDN, however with the non-working EE SIM it just shows 00000 - not sure which field it is getting wrong. Oh and yes the SIMs work fine in all other phones I've tried.
I do need to try more tests on factory reset and removing phono etc but so far it looks to be a firmware incompatibility with EE Sims.

OK, so I did a few more tests and got hold of another nano SIM on EE.
So it looks like the 23.0.F.1.74 firmware does not like EE SIMs and the phone application constantly crashes. On the later .82 firmware it works fine. I was mislead a bit by going into an EE store and trying a SIM - they must have given me an un-provisioned SIM to try. I stupidly assumed they would have actually given me a SIM that worked, doh!

I'm experiencing something similar here. I have the D6633, bought in UK, now I am in Brazil and the phone works great except that it won't connect to the 4G/3G/2G/LTE network. I can make calls, send sms normal. But internet only over wi-fi.
I called my operator, they say the phone is configured correctly, I tried my brother's sim card from another operator and the same happens.
So, the phone is clearly unlocked, if not it wouldn't recognize the sim cards at all. But no connection to the internet...
Any suggestions? I already did four factory resets, I recovered the Rom using sony software...

Same issue
adrenalize_ said:
OK, so I did a few more tests and got hold of another nano SIM on EE.
So it looks like the 23.0.F.1.74 firmware does not like EE SIMs and the phone application constantly crashes. On the later .82 firmware it works fine. I was mislead a bit by going into an EE store and trying a SIM - they must have given me an un-provisioned SIM to try. I stupidly assumed they would have actually given me a SIM that worked, doh!
Click to expand...
Click to collapse
Hello, I have the exact same problem. How did you get the firmware .82/for what country? Is everything working well with it? Really appreciate your guidance.

I had the same problem with the EE sim card, ended up sending the phone back.

fabiooli said:
I'm experiencing something similar here. I have the D6633, bought in UK, now I am in Brazil and the phone works great except that it won't connect to the 4G/3G/2G/LTE network. I can make calls, send sms normal. But internet only over wi-fi.
I called my operator, they say the phone is configured correctly, I tried my brother's sim card from another operator and the same happens.
So, the phone is clearly unlocked, if not it wouldn't recognize the sim cards at all. But no connection to the internet...
Any suggestions? I already did four factory resets, I recovered the Rom using sony software...
Click to expand...
Click to collapse
Just a thought, but is it definitely a 6633 and not some other variant which perhaps doesn't work in your country/network?

pconcha said:
Hello, I have the exact same problem. How did you get the firmware .82/for what country? Is everything working well with it? Really appreciate your guidance.
Click to expand...
Click to collapse
I purchased my D6633 from Saudi Arabia and the 23.0.F.1.82 update came as an OTA notification about a week ago.
If you look in this thread http://forum.xda-developers.com/z3/general/d6633-z3-dual-updated-to-23-0-f-1-82-t2929352/ it mentions that someone thinks the update has only been released for Saudi and Brazil - I assume it is for Europe as well as one of the release notes says a problem with Russian Yota SIMs has been fixed. I think there are also links to the firmware in there although I've not looked that hard as I got the OTA. I guess it might still in my memory - anyone know where Sony stick their OTAs?
Seems to work fine so far - no noticeable difference - well other than EE SIMs now work!

jadaress1 said:
I had the same problem with the EE sim card, ended up sending the phone back.
Click to expand...
Click to collapse
Ah, shame as it looks like the update might have fixed it. I was thinking I might have to go to another handset too (The Samsung G900FD is OK if you can put up with touchwiz and other Samsung "features"!!)

fabiooli said:
I'm experiencing something similar here. I have the D6633, bought in UK, now I am in Brazil and the phone works great except that it won't connect to the 4G/3G/2G/LTE network. I can make calls, send sms normal. But internet only over wi-fi.
I called my operator, they say the phone is configured correctly, I tried my brother's sim card from another operator and the same happens.
So, the phone is clearly unlocked, if not it wouldn't recognize the sim cards at all. But no connection to the internet...
Any suggestions? I already did four factory resets, I recovered the Rom using sony software...
Click to expand...
Click to collapse
Hmmm, sounds like another issue as with mine the EE SIM caused the phone.apk to constantly crash/restart.
Did the data work OK in the UK?
As you can make calls/SMS I assume you are at least on a 2G network which should still give you (very slooow) data - It does sound more like an APN issue - or something else. I know you said you checked with your operator what their APN settings should be (just my experience with operator customer support lines) - but I would try and have a look yourself - and maybe list your APN settings and operator and someone may spot something.
I have seen a couple of phones / operators where the "APN type" in the APN settings needs specific settings - its down the bottom and often isn't mentioned when people get the settings. For example in my current settings I have "default,hipri,dun,supl" for Virgin mobile in the UK.
You may want to search XDA/Google or start your own thread which might get more reads/replies

adrenalize_ said:
You may want to search XDA/Google or start your own thread which might get more reads/replies
Click to expand...
Click to collapse
...or try some of the things which have already been suggested and post your findings !

adrenalize_ said:
Hmmm, sounds like another issue as with mine the EE SIM caused the phone.apk to constantly crash/restart.
Did the data work OK in the UK?
As you can make calls/SMS I assume you are at least on a 2G network which should still give you (very slooow) data - It does sound more like an APN issue - or something else. I know you said you checked with your operator what their APN settings should be (just my experience with operator customer support lines) - but I would try and have a look yourself - and maybe list your APN settings and operator and someone may spot something.
I have seen a couple of phones / operators where the "APN type" in the APN settings needs specific settings - its down the bottom and often isn't mentioned when people get the settings. For example in my current settings I have "default,hipri,dun,supl" for Virgin mobile in the UK.
You may want to search XDA/Google or start your own thread which might get more reads/replies
Click to expand...
Click to collapse
It was working fine there. Here It apparently could not download APN settings, so I installed an APN APP and now it works fine!!!
---------- Post added at 12:36 PM ---------- Previous post was at 12:30 PM ----------
poldie said:
Just a thought, but is it definitely a 6633 and not some other variant which perhaps doesn't work in your country/network?
Click to expand...
Click to collapse
Working great now!!!! I used an APN APP form PlayStore

adrenalize_ said:
I purchased my D6633 from Saudi Arabia and the 23.0.F.1.82 update came as an OTA notification about a week ago.
If you look in this thread http://forum.xda-developers.com/z3/general/d6633-z3-dual-updated-to-23-0-f-1-82-t2929352/ it mentions that someone thinks the update has only been released for Saudi and Brazil - I assume it is for Europe as well as one of the release notes says a problem with Russian Yota SIMs has been fixed. I think there are also links to the firmware in there although I've not looked that hard as I got the OTA. I guess it might still in my memory - anyone know where Sony stick their OTAs?
Seems to work fine so far - no noticeable difference - well other than EE SIMs now work!
Click to expand...
Click to collapse
I see. Mine is the d6633 but it is customized for HK. I have not received the OTA upgrade yet. I have checked xperifirm as they may have it but will wait for the OTA upgrade. Sony must be releasing soon.
Thank you for replying! I am using Vodafone in the meantime, but want to go back to my EE plan!

about dual sim connectivity
can anyone tell me which sim card slot support 2G, 3G and 4G or LTE
I heard that 1 slot support only 3G and 4G
and other one is support 2G & 3G so kindly confirm me what is actual.
thanks

arfan.chatha said:
can anyone tell me which sim card slot support 2G, 3G and 4G or LTE
I heard that 1 slot support only 3G and 4G
and other one is support 2G & 3G so kindly confirm me what is actual.
thanks
Click to expand...
Click to collapse
For mine, on my networks here in Australia, I can assign 4G LTE to any sim, however, that makes the other sim 2G only (GSM).
The other option is to have both at 3G (WCDMA/HSPA).

If you assign 4g to sim one that work only for 4g or like other phones "LTE(preference)/WCDMA/GSM"
4g not available automatically search 3G if 3G not available automatically search 2G?
Assume second sim is on 2g

arfan.chatha said:
If you assign 4g to sim one that work only for 4g or like other phones "LTE(preference)/WCDMA/GSM"
4g not available automatically search 3G if 3G not available automatically search 2G?
Assume second sim is on 2g
Click to expand...
Click to collapse
Yes, your 4G sim slot will fall back onto 3G and 2G as per expected for most handsets.

help needed
sephstyler said:
For mine, on my networks here in Australia, I can assign 4G LTE to any sim, however, that makes the other sim 2G only (GSM).
The other option is to have both at 3G (WCDMA/HSPA).
Click to expand...
Click to collapse
I just got a 6633 through kogan and i am having real trouble getting it to connect to optus network with iinet and truphone simcards. Does anyone know if i need to update any settings or firmware from factory to make it compatible. I can see iinet and truphone lte networks (which i assume is the optus 4g network) when searching manually but the phone wont connect. Sims work in a mates iphone6 without a problem.

Don't suppose anyone knows how to get rid of the #sim card icon on the statusbar?

adrenalize_ said:
I purchased my D6633 from Saudi Arabia and the 23.0.F.1.82 update came as an OTA notification about a week ago.
If you look in this thread http://forum.xda-developers.com/z3/general/d6633-z3-dual-updated-to-23-0-f-1-82-t2929352/ it mentions that someone thinks the update has only been released for Saudi and Brazil - I assume it is for Europe as well as one of the release notes says a problem with Russian Yota SIMs has been fixed. I think there are also links to the firmware in there although I've not looked that hard as I got the OTA. I guess it might still in my memory - anyone know where Sony stick their OTAs?
Seems to work fine so far - no noticeable difference - well other than EE SIMs now work!
Click to expand...
Click to collapse
Have you managed to root it? I rooted the 23.0.1.f.0.96 firmware for my Z3 D6633, but after a while (half a day) it starts to reboot frequently, and Google Play stops working (can browse apps, but not download them, as the download bar never progresses).
Also, my EE sim seems to work, but the phone still shows it as 'Sim 1 0000000' whereas other sims simply appear as sim 1 and sim 2.
I am wondering if I should just downgrade back to 23.0.F.1.74 and move from EE to Vodafone or 3...

Ah, work forced a BlackBerry (yuck!) on me and I've since sold the D6633.

No mobile data all of a sudden

I was using a card with 2g mobile data on marshmallow. Then I inserted a different sim with 3g data into my phone but it hasn't been detecting any mobile data since then.. I tried the same card with a different phone and the interest works perfectly on it. I also tried other sim cards with my one plus one but I am not getting any data at all now. I downgraded to 5.1 wondering it may be a glitch with MM, but no luck. Anyone with any clue about what needs to be done?
Thanks in advance.

abysstheking said:
I was using a card with 2g mobile data on marshmallow. Then I inserted a different sim with 3g data into my phone but it hasn't been detecting any mobile data since then.. I tried the same card with a different phone and the interest works perfectly on it. I also tried other sim cards with my one plus one but I am not getting any data at all now. I downgraded to 5.1 wondering it may be a glitch with MM, but no luck. Anyone with any clue about what needs to be done?
Thanks in advance.
Click to expand...
Click to collapse
maybe you need to set 3G or LTE in settings --> cellular data
or set apn configuration according to sim's carrier

It took me a couple of days to notice that my data wasn't working after the last update. I thought, since my network has terrible coverage, that I wasn't getting any network signal...but no, something was broken.
After tinkering with the APN settings (according to network specs) and doing everything I could think of nothing seemed to work.
Finally, I reset APN to default (holding the menu icon on the upper right corner) and switched to 3G instead of 4G.. finally got a signal
Switched back to 4G and everything is back to normal now.
I did notice that APN type is set to "default,supl" even though the carrier says that when setting it manually one should type "default".
Network is lycamobile UK

Poco X3 in the US?

Have there been any US users brave enough to import this phone? What have been your experiences on Tmobile or AT&T?

andysensible said:
Have there been any US users brave enough to import this phone? What have been your experiences on Tmobile or AT&T?
Click to expand...
Click to collapse
Mine should be here on Thursday. I'll post some info once I get it

Thanks where did you buy it?

I got mine today from Amazon from a seller called Mobiles International (only one selling it right now). I'm on Mint mobile set up the APN and rebooted. Getting signal on par with my Mi Mix 2s no issues. I'll be posting more thorough post probably Sunday with my thoughts.

andysensible said:
Have there been any US users brave enough to import this phone? What have been your experiences on Tmobile or AT&T?
Click to expand...
Click to collapse
Yeah got mine in 3 weeks off Alibaba $239 not sure if they're still running the special I'm on Verizon northern Ohio but my 4g keeps cutting out I'm sure it's some setting I'm not doing right having trouble finding help
---------- Post added at 03:37 AM ---------- Previous post was at 03:35 AM ----------
rivethead23 said:
I got mine today from Amazon from a seller called Mobiles International (only one selling it right now). I'm on Mint mobile set up the APN and rebooted. Getting signal on par with my Mi Mix 2s no issues. I'll be posting more thorough post probably Sunday with my thoughts.
Click to expand...
Click to collapse
Any idea how to change our find apn for Verizon?

This phone is GSM only. That might be part of the issue with Verizon. To set the APN you go to settings>Sim cards and mobile network>click on the Sim card>Access Point Names.

Glock45 said:
Yeah got mine in 3 weeks off Alibaba $239 not sure if they're still running the special I'm on Verizon northern Ohio but my 4g keeps cutting out I'm sure it's some setting I'm not doing right having trouble finding help
---------- Post added at 03:37 AM ---------- Previous post was at 03:35 AM ----------
Any idea how to change our find apn for Verizon?
Click to expand...
Click to collapse
maybe this one
https://www.4gapn.com/us/en/verizon
but if this site is right using poco x3 in verizon is not the best idea
https://www.kimovil.com/en/frequency-checker/US/xiaomi-poco-x3

Anyone able to get volte with it?

anon1135 said:
Anyone able to get volte with it?
Click to expand...
Click to collapse
Yes I'm in northern Ohio southern mi and the signal is great but there is some setting I'm not getting right it'll connect to LTE for half minute then switch off it shows 3 of 5 Verizon bands ?

Glock45 said:
Yes I'm in northern Ohio southern mi and the signal is great but there is some setting I'm not getting right it'll connect to LTE for half minute then switch off it shows 3 of 5 Verizon bands
Click to expand...
Click to collapse

Yes...
anon1135 said:
Anyone able to get volte with it?
Click to expand...
Click to collapse
Yes to enable VOLTE dial the following into the phone dialer:
*#*#86583#*#*

rivethead23 said:
Yes to enable VOLTE dial the following into the phone dialer:
*#*#86583#*#*
Click to expand...
Click to collapse
Are you on t mobile? Some of my other xiaomi's phones have it enabled but it still drops to 3g during calls. But another different xiaomi with the same sim will also have it working so I've been confused whether it's carrier or device dependant

I'm on Mint Sim. I did make a few calls and discovered a few things. If you enter the above code it then shows the VoLTE option under the sim card. If I toggle it on, phone calls don't go through. Toggle off they do. I observed when making a phone call that the mobile signal says 4g rather than LTE during the call. If I use *#*#4636#*#* to go to the info screen it says the voice network type is LTE. Lower on the screen it says that VoLTE provisioned is off. If I toggle mobile radio power off then on the LTE provisioned will then go to On. If I try to make a call the connection resets (network drops for like a minute) and the LTE provisioned toggle goes back to off once the network comes back up.

WiFi Calling Not Working
rivethead23 said:
I'm on Mint Sim. I did make a few calls and discovered a few things. If you enter the above code it then shows the VoLTE option under the sim card. If I toggle it on, phone calls don't go through. Toggle off they do. I observed when making a phone call that the mobile signal says 4g rather than LTE during the call. If I use *#*#4636#*#* to go to the info screen it says the voice network type is LTE. Lower on the screen it says that VoLTE provisioned is off. If I toggle mobile radio power off then on the LTE provisioned will then go to On. If I try to make a call the connection resets (network drops for like a minute) and the LTE provisioned toggle goes back to off once the network comes back up.
Click to expand...
Click to collapse
I'm on Mint Mobile too. I've been trying to find any info I can to enable WiFi Calling, as Band 2/4/5 coverage in my area is weak, and the only strong signal we have at our home is Band 12 which this phone doesn't support, unfortunately.
A few observations:
I disabled both the VoLTE carrier check (*#*#86583#*#*) and the VoWiFi carrier check (*#*#869434#*#*) and enabled both toggles within the SIM card settings page with no luck.
I also saw the settings you mentioned on the hidden info/settings screen ( *#*#4636#*#*) and, similarly to what you said, any options I modify simply revert back. IMS Status is also indicated as "Not Registered" in the more tab at the bottom, and I'm not sure if this is directly related to these features not working. I can't seem to register my SIM Card with the Xiaomi SIM Activation Service either (it requires an international text or something). When I attempt to do so, I just receive a "Can't activate SIM card; Server error occurred while requesting an activation SMS." message. I linked my number with my MI Account on the website, but I still am getting that error, so I'm not sure what's going on there.
Lastly, if I change my phone's WiFi Calling option to WiFi Only (via another secret menu that I accessed with an app literally called "WiFi Calling" lol) it can't make any outgoing calls at all. It can only function with a mobile connection available. If anyone has any info to share on the possibility of enabling WiFi Calling on this phone in the US, or has had experience with configuring other stingy Xiaomi phones, that would be greatly appreciated.

I know in the mint app there's a toggle to turn on wifi calling which is off by default. Did you turn that on?

rivethead23 said:
I know in the mint app there's a toggle to turn on wifi calling which is off by default. Did you turn that on?
Click to expand...
Click to collapse
Oh, yes. I have. At this point I may just have to purchase a cell signal booster for our home, but VoWiFi would definitely be the best case scenario.

Changing regions
Anyone know if you could do factory reset and select a different region that would put you on different bands for Verizon allowing me to get service here in the US? Just checking if anyone's tried that ?

SeekerofLight.iz said:
I'm on Mint Mobile too. I've been trying to find any info I can to enable WiFi Calling, as Band 2/4/5 coverage in my area is weak, and the only strong signal we have at our home is Band 12 which this phone doesn't support, unfortunately.
A few observations:
I disabled both the VoLTE carrier check (*#*#86583#*#*) and the VoWiFi carrier check (*#*#869434#*#*) and enabled both toggles within the SIM card settings page with no luck.
I also saw the settings you mentioned on the hidden info/settings screen ( *#*#4636#*#*) and, similarly to what you said, any options I modify simply revert back. IMS Status is also indicated as "Not Registered" in the more tab at the bottom, and I'm not sure if this is directly related to these features not working. I can't seem to register my SIM Card with the Xiaomi SIM Activation Service either (it requires an international text or something). When I attempt to do so, I just receive a "Can't activate SIM card; Server error occurred while requesting an activation SMS." message. I linked my number with my MI Account on the website, but I still am getting that error, so I'm not sure what's going on there.
Lastly, if I change my phone's WiFi Calling option to WiFi Only (via another secret menu that I accessed with an app literally called "WiFi Calling" lol) it can't make any outgoing calls at all. It can only function with a mobile connection available. If anyone has any info to share on the possibility of enabling WiFi Calling on this phone in the US, or has had experience with configuring other stingy Xiaomi phones, that would be greatly appreciated.
Click to expand...
Click to collapse
I'm on t mobile and have a few different budget phones from xiaomi and none of them stay on lte during calls for some reason even though I have the volte toggle enabled after dialing the code. Only one of my xiaomi phones which is a more expensive kind will have volte working by default with the same sim card. Not sure what the differences are between them but the budget phones are volte capable for other users just with a different service. Weird because if it's carrier related and my same sim isn't working then something else isn't right. Volte will be an important requirement in the US starting in 2021 because of the 3g shutdown right?
There is a pc tool to modify the modem and also a different one for band unlocking but not too sure how reliable they are. People did have success with it though check out this thread here
https://forum.xda-developers.com/redmi-note-7/help/volte-wifi-calling-redmi-note-7-t3931119/page3
It's a different xiaomi phone but I think the method could be similar. On the last page, someone on t mobile said they were able to get volte and rcs working after some changes. Not sure about wifi calling though. I might try this myself soon though I'm not too advanced with it. It should be fine if an old budget phone is used for testing. Seems to be one of the most useful info I've found after some digging around

Glock45 said:
Anyone know if you could do factory reset and select a different region that would put you on different bands for Verizon allowing me to get service here in the US? Just checking if anyone's tried that ?
Click to expand...
Click to collapse
The only Verizon bands this phone supports are the 4G bands 2, 4, and 5. No 2G or 3G. It's tailored more so for GSM carriers and Verizon is a CDMA carrier. I don't see how factory resetting or changing the region would affect the bands as that has more to do with the internal modem and antennae than it does the software. But I could very well be mistaken. Awhile back I know there was a weird method to "unlock all bands" if your phone had a Qualcomm chip in it, so phone tech and their carriers can admittedly be a bit of an enigma to me lol. Regardless, I'd advise against getting this phone if you're on Verizon.
anon1135 said:
I'm on t mobile and have a few different budget phones from xiaomi and none of them stay on lte during calls for some reason even though I have the volte toggle enabled after dialing the code. Only one of my xiaomi phones which is a more expensive kind will have volte working by default with the same sim card. Not sure what the differences are between them but the budget phones are volte capable for other users just with a different service. Weird because if it's carrier related and my same sim isn't working then something else isn't right. Volte will be an important requirement in the US starting in 2021 because of the 3g shutdown right?
There is a pc tool to modify the modem and also a different one for band unlocking but not too sure how reliable they are. People did have success with it though check out this thread here
https://forum.xda-developers.com/redmi-note-7/help/volte-wifi-calling-redmi-note-7-t3931119/page3
It's a different xiaomi phone but I think the method could be similar. On the last page, someone on t mobile said they were able to get volte and rcs working after some changes. Not sure about wifi calling though. I might try this myself soon though I'm not too advanced with it. It should be fine if an old budget phone is used for testing. Seems to be one of the most useful info I've found after some digging around
Click to expand...
Click to collapse
Thanks a ton for this info! My dad has a Redmi Note 7 so I might try this out for both of us and see what kind of results I can get.

I stumbled across this icon today, to my surprise. I had followed the steps to modify the modem in the phone, but could not really find an adequate profile among the options to enable for T-Mobile/Mint in the US. I mostly work from home where my cell signal isn't the greatest, so I didn't even see it until a couple days after the modifications.
I'm not entirely sure if it's the modifications to the modem that caused the icon to appear, or simply enabling it via the dialer code but I was surprised to see it, nonetheless.
I tried making a few calls with it, but it seems to disappear when I get into an actual phone call, and unfortunately I have no news on the VoWiFi front.

Xiaomi Redmi Note 8T only Edge no 4G anymore

I don't know what else to do without returning the phone under warranty or doing a hard reset first to see if that fixes the problem. I bought a Xiaomi Redmi Note 8T in July 2020 and the phone can only connect to a 2G network (Edge's E is at the top instead of 4G in one). I have not changed anything and am afraid that it is broken in my mobile if possible. I am using the Google products and not the installed Mi products, I have Android 10 with Miui 12.0.3 (the last one).
What I've already tried: I've been in contact with T-Mobile because my son has the exact same phone and subscription. It does have 4G just like I did before. All settings are the same, in terms of T-mobile server, preference for LTE networks is set, etc. In the Settings everything is the same. According to T-mobile, there are no problems with the network. I have done another system update (to Miui 12.0.3). Mobile data turned on and off. Airplane mode and reboot and back on. APN reset and then phone started did not help either. When selecting network automatically, I turned off and manually search, but then the mobile only finds 2G networks.
Then a clear moment and see if it is the SIM card, so my SIM card in my husband's iPhone and yes it just indicated connected to 4G. Then my husband's SIM card in my Xiaomi and then it only indicated E again. With my son Xiaomi have done the same but again 4G on his and with his SIM card Edge in my phone again. So I'm sure it's the problem with my phone. Who else knows what I can do? I will try after a hard reset the same Edge network will still remains or if 4G works again. All responses welcome!
I think that there is something wrong with the GSM module because I tried *#*#4636#*#* and then tried several settings but it still give Edge even if I force the network to LTE only. If I give in LTE only it says: IWLAN no roaming, only emergency calls.