How to enable WiFi calling? - Android Q&A, Help & Troubleshooting

Hi everyone,
I recently bought an LG G8 (AT&T, unlocked) on eBay to use with Freedom Mobile in Canada. Prior to purchase, Freedom Mobile reps assured me that the specific model I was getting (LM-G820UM) was compatible.
Overall, the phone is working great, but the option for WiFi calling is greyed out. I went to the Freedom Mobile repair center and they said I need "some software that they forget the name of that is specific to all carriers to be overwritten onto my phone." I have no idea what this is or how to do it. Any tips?
Thank you very much!
More info:
*#*#4636#*#* code showed that neither WiFi Calling nor VoLTE are "provisioned"
Model Number: LM_G820UM
Software Version: G820UM10i
Baseband Version: MPSS.HE.1.0.c4-00043-SM8150_GEN_PACK-1.194551.3.196204.3

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Dellvoice.ca has an android app that will give you a canadian phone number.
You can run an old (or new) android phone on a wifi network for free.
So your phone can run without a sim and be able to intiate or receive calls
using the free dell phone number provided.
I'm not sure what other countries have this service yet I. I just know it just came to Canada.

Verizon Samsung Note 2 - Mobile Hotspot - Mobile number not found

I recently bought a phone from the u.s.a. I managed to root the phone and now it is working great on my canadian sim card.
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Phone: Verizon Note 2
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The only problem i found this morning is that i cannot share my mobile data. Here is the problem:
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I get this screen:
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How could i enable mobile hotspot? Is there a crack somewhere?
woo hoo!! i found a solution.
Those big cellphone companies make me angry.
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I never donate to charites. But for there hard work i always donate to developers. I hope everyone else does too.
My solution:
http://forum.xda-developers.com/moto-x/themes-apps/xposed-moto-x-4-4-native-tether-apk-t2601859
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LG G5 wont allow me to make phone calls on LTE

Hi all,
pleasure to be here, I bought a used LG G5 because I needed a phone to connect via Tello (Sprint), long story short I was able to connect the phone with Tello but my issue is that if the phone is on LTE I cant make any calls/texts, I get an error message saying: Mobile network is unavailable but internet on LTE works fine. if I switch from LTE to CDMA (3G) I'm able to make phone calls/Texts but I'm not able to user the internet. Tello it's been working with me on this issue since December, I've been researching on this issue all over the internet with no luck. today tello called me and told me that the issue is on the phone and that I should take it to a repair shop, I'm not sure what the repair shop will do to fix this so that's why I'm here looking for your PRO help. any help is appreciated.
Model: LG G5 LGLS992
Android version: 7.0
Android Security Patch Level: February 1, 2018
Kernel version: 3.18.31
I have replaced the sim card
I have reset network settings
I have factory reset
I have reset the phone via root
I have update PRL
I have update Profile
I have update firmware
UICC unlock : Failed to update
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Help with WiFi calling on LG G8

Hi folks,
I recently bought an LG G8 (AT&T, unlocked) on eBay to use with Freedom Mobile in Canada. Prior to purchase, Freedom Mobile reps assured me that the specific model I was getting (LM-G820UM) was compatible.
Overall, it does seem to be working fine, but the option for WiFi calling is greyed out. I went to the Freedom Mobile repair center and they said I need "some software that they forget the name of that is specific to all carriers to be overwritten onto my phone." I have no idea what this is or how to do it. Any tips?
Thank you very much!
More info:
*#*#4636#*#* code showed that neither WiFi Calling nor VoLTE are "provisioned"
Model Number: LM_G820UM
Software Version: G820UM10i
Baseband Version: MPSS.HE.1.0.c4-00043-SM8150_GEN_PACK-1.194551.3.196204.3
I have a similar issue, but it is a Sprint phone and I need WiFi Calling and VoLTE on T-Mobile to work.

US S21 5G not registering on any mobile networks?

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I'm in South Africa and I bought a SM-G991U1 (US unlocked version) on Amazon Renewed and everything works fine except for mobile connectivity.
I get the "Your phone's not registered on a network" message if I try to make a call and mobile data does not work.
I've tried:
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- Manually setting APN details
- Tried a few other SIMs from different carriers as well that work in other phones
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I suspect that the modem firmware or something else is region specific to the US on this model and not working on South African networks as the phone does support our network bands according to GSMarena.
Would it be possible to re-flash the modem firmware or fix the issue some other way?
Hello I'm having the same problem, have you find any info about it?
Not much, I went to a carrier store and the phone seemed to work alright there after rebooting the phone with the sim card installed. I am starting to suspect that the phone doesn't like my closest cell tower maybe? Or possibly doesn't like using another carrier's mobile tower?
No idea.
I've since bought an identical but South African version of the same S21 which works flawlessly.
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