[INFO] Wifi Calling/texts in other countries - Sprint LG G3

Wifi Calling/Texts info for other countries​
This is just some info I found out while traveling around Mexico. I would imagine it would work in other countries as well.
Sprint is still working on this, but they really want it to work so they don't have to unlock your phone Sim Card. They will still unlock your Sim if you meet the criteria. Google that info, it's in these forums. Mine is unlocked BTW.
So this is what it took to get Wifi Calling/texts to work:
1. Turn off Data
2. Turn off Location
3. Turn on Wifi - you'll need a pretty strong signal for this to work. Or else it will keep tripping out.
4. Turn on Wifi Calling - You should probably do this before traveling to another country to get it all set up. It uses data and requires a reboot to work - if I remember right.
4a. You'll need to enter an actual address. This is required for 9-1-1 which is a requirement for Wifi Calling. It's all part of the agreement you'll need to acknowledge when setting it up.
5. While out of country, and with Wifi Calling turned on, Make sure the "Locate me" box is not checked, then enter the address you entered earlier in this format:
1234 Street name,
Anytown, AA 123456
MAKE SURE the comma's are in the right place!! Or it won't accept it.
5a. You may also need to go to Settings>Wifi Calling and select the Wifi You'll be connected to.
The address/location seemed to be the biggest issue. Once I figured that out, all was working great.
I'm doing this all from memory, so if anybody has any questions or comments that they've found, Please put them here. This is a great FREE feature that allows us to travel elsewhere and still use our phones. Obviously where you go requires Wifi for this to work.

Related

HELP/Alert! New ALLTEL versions wont do wifi!?!?

This really really pi##es me off, as where I live I get 1x data, & usually use my home wireless (wifi).
Recieved the pro, and activated it. It seems disabled by being activated by alltel. I even stumped the blackberry adept person at the local store enough that they switched out the phone, I walked to next door (motel) used the free wireless (to prove the wireless would even function) then let him activate it and headed home (30+ miles into the wilderness). got home and again I cant get Crap wifi to work.
Home is wireless b, it connects, can be seen on the 'simple' 2 wire wireless appliance but the PRO, will not see or try to send data through it. turned off security and everything on the wireless for testing. I can check, but I know the pass for the motel, and I could try again, but am definitely sure that this AINT the issue--> again the phone wouldnt connect at the motel (least not the pre exchanged one) with me or the rep at Altel either, while it was activated and on alltel.
who to call? Any help out there?
my 6800 will still wifi, at anyplace there is a signal and that I know the passcodes or is open.
yes I asked this, at alltel-howard forums, but would think you guys here know more (on second thought, when I remembered about all the stuff you do here, I know I probably should've posted here 1st, but Im kinda mad at the moment!)
Pretty adept at computers, I do IS as my real job, anything I can do to help trouble shoot? yeah the 6800 has been flashed & I even noobed around with cooking a few time. appreciate any help you guys
i Have a touch pro and a touch diamond, both under 2 weeks old and the wifi works fine with both of them, maybe you should try a custom rom and see if they changes anything. but there is no reason it shouldnt work with the stock rom
goonygugle said:
i Have a touch pro and a touch diamond, both under 2 weeks old and the wifi works fine with both of them, maybe you should try a custom rom and see if they changes anything. but there is no reason it shouldnt work with the stock rom
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Click to collapse
goony,
Is it an Alltel? are you positive that wifi is working, not the "data" connection with alltel towers (cell call)? My proof is that if I goto my basment, I have no cell service so not any data connction, ONLY WIFI (that is where my wireless router is. that is when I found out the 1st time. Everything else looks right, on the phone it says it is connected, on the router I can see it on the connected devices list.
I have my issue that I believe, that it is some setting that Alltel is setting... like I said the phone would connect via wifi until the phone activated. When I activated (full unlimited data package is on this phone) the phone fully rebooted on its own, 3 times as if getting updated via data plan. Im not talking about the 1st time turn on customizations, those were done before I tested the wifi at the motel lobby... For instance, the volume control buttons - the display app were obviously modified, I am not positive what else was.
I'd LOVE to try custom rom, if I wasnt right in the period of time I can get my money back, or not. after that I will...
yes they are alltel, and to test the wifi i just connected it to my router and then turned of my alltel data and it stayed connected so i am positive the wifi works. you can still use a custom rom under your return period, if you want to return just relock it.
I wanted to double check myself sting to make sure i was realy getting wifi, so i connected and went to speedtest.net and did a speed test and sure enough it showed my isp as roadrunner(my home provider). Have you had this problem with multiple phones? are you checking the internet option when it connects? and do you have it diconnected from the pc? my wifi wont work on my diamond hooked to a pc.
Has nothing to do with alltel. Maybe with the rom or the phone. Now I hope you're not waiting for a pop up to show itself on the main screen asking if you want to connect because you could wait forever. Go to comm manager enable wifi/ go to start->settings->connections->wifi and make sure options are set to "all available." If you can even see wireless networks on the list, the wifi is functioning correctly and there is a router settings conflict. If you don't see networks on that list in wifi, then there is a rom/hardware problem.
Sweeny Russ said:
Has nothing to do with alltel. Maybe with the rom or the phone. Now I hope you're not waiting for a pop up to show itself on the main screen asking if you want to connect because you could wait forever. Go to comm manager enable wifi/ go to start->settings->connections->wifi and make sure options are set to "all available." If you can even see wireless networks on the list, the wifi is functioning correctly and there is a router settings conflict. If you don't see networks on that list in wifi, then there is a rom/hardware problem.
Click to expand...
Click to collapse
Hey thanks!
But, it is the Stock shipped rom, I have my HTC 6800 right next to this one, connected and surfing the web, both show up when in the home WIFI router config as connected, yet the pro sends NO DATA to ie or opera, (cant locate any webpages) or any app that uses internet/data.Unless there is something I need to do with PRO that I never had to do with the 6800 (mogul) that I just flashed back to stock shipped rom, ready to sell on ebay...
what I dont know is, well, most of the people wifi to tether a laptop or something, I dont! Sure that will be neat in the future, but RIGHT NOW, Just I use WIFI when I am at home and dont even have signal or evdo near me... (remote locations that I live, the tower coverage sucks out here in ks...) Got to fix this soon, or this Beyotch is going back to alltel.
Another thing, this bad boy pulled this crap, as soon as alltel activated the device (so I could use it as my phone!) when it was NOT activated, the wifi worked (proven at the motel next door to the Alltel store I exchanged this phone). BTW, I was able to test it on the 1st phone shipped to me, while it was activated, it pulled the same thing, when he unactivated the phone, we could almost pickup the wifi from the motel next door (distance was the only issue I think now looking back) but seemed like a chip problem.
Where I got screwed was we believed the wifi to be bad on the 1st phone. So he got out a new phone, and before we activated it, I went and tested the wifi, it worked on the 2nd phone. I thought wall was fine, it worked. then I had him activate it, assuming that proved I will be able to use the wifi. So I leave the store thinking OK wifi works. I get home, and again unable to use my home networking wifi to open web or apps. unacceptable. Yet the 6800 does and still works flawlessly (as long as you slide the wifi sider on side to on {inside joke}).
follw me better now?
What brand router do you have? How many devices are wireless? And it connects to other locations but are you sending and recieving data? Try this link http://www.wmwifirouter.com/trial/ and install on 6800 if you are not normally around hotspots. This will test the t-pro's ability to send and recieve information via wifi. Now it is sounding like an IP address conflict.
Sweeny Russ said:
What brand router do you have? How many devices are wireless? And it connects to other locations but are you sending and recieving data? Try this link http://www.wmwifirouter.com/trial/ and install on 6800 if you are not normally around hotspots. This will test the t-pro's ability to send and recieve information via wifi. Now it is sounding like an IP address conflict.
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Click to collapse
Sweeny, Im in the houshold router (made by 2wire) I can see it (the Pro as well as the 6800) each get an ip. (I work In IT, so I know what you are talking about in ip conflicts, all that.) I have even set the router to manually setup IPs now, then set the ip inside the Pro, as well as the default gateway, dns all that.) I'm telling ya, it is more like it doesnt know the DNS or the gateway (just like I disable internet surfing on the computers at work that I still must use networking)
I copied the DNS and everything from a working laptop (ipconfig -all) on a wireless laptop today, and still as if it was disabled.
This weekend i will test the dang thing tethering with my notebook i'll bring home from work (use the pro as the internet access). if it wont tether either, then I think allHell is doing something. Again if the device is DE-Activated I will wifi... {I'll bet you $$}. I might call alltel, tomarrow night, and try that. I'll have them inactivate it and if it suddenly works, then the question is, what do I do with alltel? they dont have the right to disable hotspot usage do they?
I feel I feel the presence of VERIZON already in Alltel, Luke is turning to the dark side. NOOOOOOOOOOOOOOOOOOOOOOOOO!
You all thought I was off my crock...
http://www.htcwiki.com/thread/2073117/Touch+Pro+WiFi?t=anon lots of folks posting same problems it looks like.
Need that group of people who can create a kitchen, and hcak tomtoms, to help us with this PLEASE!
No I don't, think you're off your crock I just know how frustrating problems like this can be. Here is what I suggest you do. And if this doesn't work exchange the phone or try a different router. I know what you're thinking....not the router. Truth is might be. Its just like wireless adapters in wii's and ps3's they simply will not work with a handfull of routers even though not clearly documented.
Anyway, change router to static Ip's, safer anyway.
Specifiy gateway, primary and secondary dns, and limit your ip's within 100 available obtainables. Use a 64 bit wep encryption. Change the channel of your router's broadcast to 1 or 11. Use only simple gateway ip range, not pure server. If you need me to provide you with example settings then pm me because I do not want to broadcast them via forum
Good luck.
Dont take this the wrong way....but are you positive that you are disabling the DATA Connection in Comm Manager?
I have had the alltel touch pro since the second they hit the store. I have used 3 of them since and they all work perfectly on wifi. I primarily use wifi and use diamond tweak to activate the wifi standby so wifi stays connected in standby like data does by default and use modaco nodata to disable data as I live in a house that gets a very lowsignal from the tower and eats my battery superfast if I use data. I have a router in the house and one in my office detached from my home and when I had my mogul it often would not switch between routers successfully requiring me to manually connect more often than not. All the Touch Pros connect superfast and switch automatically. I am running mightyrom 4.12 and telus radio which is light years better than stock with signal, speed and batterylife, but even when I was on stock for about 3 months there were absolutely no wifi issues.
ACoolGuy said:
Dont take this the wrong way....but are you positive that you are disabling the DATA Connection in Comm Manager?
Click to expand...
Click to collapse
Not sure which of us you are asking this queston of...
Thanks, for the help so far...
I was having the same issue (Alltel and all).
I found this post in the MS forums:
http://social.microsoft.com/Forums/en-US/windowsmobile/thread/561f18a8-5f64-4359-957e-adb003229f1d
Essentially, it says to "Navigate to START/SETTINGS/Connections Tab/Connections icon/Advanced Tab
Press Select Networks Button
At the top it says "Programs that automatically connect to the Internet should connect using:"
You want to press on the drop down and choose My Work Network"
You need to tell the system that the Work Network connects to the internet as well. While this doesn't seem like the ideal solution (there should be a faster way to switch it, or it should do it automatically depending on location), it did work for me. I'm sure there's a much more sleek solution out there, though.
Btw... I hope I'm posting this correctly. I'm more a reader than a poster.
Ooop... one more thing. Its non-sleekatude rests with the fact that when you want to switch between wifi and your data plan, you have to go through the whole process, and switch the active network from My Work Network to Alltell Wireless. This is where I was hoping for a better solution. As I say, it does work, but it seems like it should involve less hassle.
Might add this to the WIKI, I dunno but there could be a few more thousand users out there on ATT or SWB using the modem/routers that they shipped when you got DSL more than a year ago...
Everyone that has the older 2 wire brand, wifi modem/router that came with SBC (now ATT). Wierd I know. But Mine has just been replaced by the newer version of that modem/router. and I will be dammed, it works. but the phone wont work with the older ones. Mine was the 2WIRE 1000hw model. they are shipping new models, and finally the phone will work with the wifi on that new router.
Thought it might be nice to know...
alltel model uses wifi just fine
My TP from alltel works just fine with wi-fi all i ever do is turn it on and then select which connection i want to make ...really quite nice...maybe you need to exchange yours...
On further testing of my own setup, I'm thinking my issue was the router. I had done several fixes all at once, and cited the wrong fix as the working one. I happened to reset my router at the same time I did the above suggested fix.
I thought it had to be the device, as my HTC Apache never had an issue with the router, but after resetting the router, and going back to the original settings on the TP, I'm having no problems connecting to the network. I wish I could pinpoint the exact conflict between the two, but now that I have it working, I'm not messing with it.
My suggestion is to back up your router settings, reset the router, and see what happens. Or test your wifi on someone else's network.
Isolating a network conflict can be one of the least fun things to do, but from everything I've seen here and in other forums (and my experience with it) I'm going to say that's the issue, and not the TP alone.
I don't think it likes your router being wireless B, you should try it on a wireless G router before Ebaying it.

Jetstream hotspot?

I know this is not allowed by att, but is this something that can be hacked, or is it a hardware issue? Or at least tethering?
Guess it should be solved as a voice call functionality block. S-OFF + simple property modification. Without custom ROM.
I'm sure a hack will be found for it, once the device is rooted and such. Much like the Sprint device ROMs come with the Wireless Tether application, there will likely be one for the Jetstream once we can get the device rooted.
Greetings... Believe it or not, I "accidently" found a way to activate it, without root. I installed super box from the market, and when I was in the power save menu, the hotspot line said off, but clicking it took me to the regular settings menu and the menu to the right allowed me to turn it on, give it a name and set security! The odd thing is that the list of menus on the left is not highlighted as to which one you are in, so you can't access it through "settings," only superbox. There may be another way, but this works!
HI,
I am new to Android with my first device being the Jetstream. I would love to have hotspot capabilities, would it be possible for you o provide a stepwise outline of how you gt this feature to work?
Thanks so much.
Ok, I downloaded the program and as you said, I was able to turn on the wi-fi hotspot capability; however, even when I changed the SSID name it showed up in other devices as "HTC Portable Hotspot" and even if the security was left open it kept asking for a password. I changed the security to require a password, but when I entered it it did not allow me to connect.
Did you do anything else?
I think you are on track.... The password is your choice, and is only an option if you pick one of the two security protocols. The password would be entered on the other device trying to connect to the jetstream. If the name is fixed, I'm at a loss, didn't have that issue...
any luck with this?

GPS phone locator

Ok so basically all i want to do is this: find my phone if I lose it or it's stolen, even if the sim card is changed.
If the sim card is not changed-I have installed sms gps enabler and after that if I lose the phone I can enable wifi and gps with an sms, and then should use seekdroid to find the phone BUT the phone must be conected to a wifi network with internet connection to actually be able to find the phone on the site..so it kind of sucks.
So, any suggestions? As I said I can enable gps remotely but would need an app to send gps coord through sms(or something like that) and use and online app to find the phone on the map.
I think this is what you're looking for...
(hey, look, it's free)
http://www.youtube.com/watch?v=NU6oK94HHag
https://market.android.com/details?id=com.androidlost
I'm considering installing that also, but I don't have the habit of leaving location enabled (well, it still can enable it remotely through internet or SMS).
But, after all, it seems simply fantastic!!!
lots of features but for me it only works if wifi enabled and connected to a network..
you can always enable connection by sendind proper sms. Dont worry
SMS features are similar to internet features I think.
yes you can enable wifi with an sms BUT maybe the phone is in an area that doesn't have any wireless networks...and even if there are any , the phone will not automatically connect to a wireless network...
cozzz16 said:
Ok so basically all i want to do is this: find my phone if I lose it or it's stolen, even if the sim card is changed.
If the sim card is not changed-I have installed sms gps enabler and after that if I lose the phone I can enable wifi and gps with an sms, and then should use seekdroid to find the phone BUT the phone must be conected to a wifi network with internet connection to actually be able to find the phone on the site..so it kind of sucks.
So, any suggestions? As I said I can enable gps remotely but would need an app to send gps coord through sms(or something like that) and use and online app to find the phone on the map.
Click to expand...
Click to collapse
You can do that with SeekDroid. http://help.seekdroid.com/kb/features/sms-how-to-and-help
Put in a support ticket at http://help.seekdroid.com if you have any questions.
-SeekDroid Team
Best option will be where is my droid or whater its name is....
sycko said:
You can do that with SeekDroid. http://help.seekdroid.com/kb/features/sms-how-to-and-help
Put in a support ticket at http://help.seekdroid.com if you have any questions.
-SeekDroid Team
Click to expand...
Click to collapse
Ok, as I said in the first post, the phone needs wifi for you to locate it online using seekdroid website and I said that I would want something that uses only sms messaging and (eventually) real time locating on a map
Devil_Dude said:
Best option will be where is my droid or whater its name is....
Click to expand...
Click to collapse
Well, you're right. After many efforts I found it to be the best option for finding the phone. You just send the attention word for the gps, the gps goes on and in a few minutes you get the gps coordonates for your phone as well as a google maps link to the location. When you think you are close enough you can text the attention word and the phone will ring with max volume no matter if silent/vibrate setting is selected. Also, if sim card is changed it will send the new number to a preselected phone number.
In my opinion, if this software would have had some real time tracking through on online map it would have been perfect. Anyway, as said, I think this is the best option if you ever lose your phone or it gets stolen.

Flyer beginner needs serious help

As a newbie I am at a loss as to how i can resolve a number of issues i have with my flyer so please be gentle .....
My flyer says.it has
Android 3.2.1
HTC Sense 1.1 for tablet
Software Number 3.55.405.1
Kernel 2.6.35.10 Baseband 20.4801.30.0822u_3822.10.08.07_m Build 3.55.405.1 cl205068 releasekeys Browser WebKit 534.13
What I know.....
1. GPS never works, it is always 'searching' but never finds
2. WiFi works OK
3. Mobile HSDPA says Signal strength -75 dBm 18asu at the moment and I do not have a Wifi connection available so i was expecting all my connections would route through mobile connection (as i enabled 'Always on mobile data') but nothing that requires a connection is working ?!
4. I recently accepted an auto update for the OS and now I do not have the Icon target for the Pen even when i use the Pen tutorial !!
I have read the HTC user guide for the Flyer but it does not even come close to explaining how the connectivity works and all i want to be able to do is maintain a connection thru either wifi or GSM at all times yet is seems that even though i have a working SIM in the device (which has credit and says it is connecting) it never works when i don't have wifi. There is also no 'connection overview' page that i can find that tells me what connections are working on my flyer (GPS,wifi,GSM etc) and what strength signal they have !!!!
All advice, help or pointers gladly accepted at this point for any of the above queries
thnx
I am not sure if there is a solution short of gaining s off or HTC dev unlock or rolling back to gingerbread
Flyer
Thnx for the reply
Is how to do any of that detailed in this forum anywhere plz?
If you want to downgrade there is this
http://forum.xda-developers.com/showthread.php?p=26773618
I think either way you will want to gain s off so that you can freely flash roms and hopefully solve your problem. There is risk though.
So if I understand you correctly you have no WiFi and very weak data connection? Has it always been this way?
Flyer
Don't know how to 's off' ? Is that a setting on the Flyer somewhere?
I am sorry I was not specific enough. What I should have said was that the Flyer functions fine on a Wifi connexion as far as i have seen but when there is no Wifi connexion available then i expect it to use the SIM card data connexion (GSM). I had set this option on the flyer under 'Wireless & networks \ Mobile Network Settings
I also do not appear to have anyway to see what connexions are in use for any of the apps or what signal strength is currently available for 'active' connexions
Can you not just go under settings then check wireless and networks? And what was the bit about the pen?
S off is not a setting you just click off, it is the process of unsecuring your bootloader which I do not suggest for you.
Have these problems always been there or are they new? Did you just get the flyer?
Flyer
In the settings that i have it only says 'Turn On' wifi and 'notify when open network is available' but it gives me no idea of the signal strength of any network (wifi or GSM or even GPS)i am connected to so i never know when i am switching betwen wifi or GSM or even which i am using for any app (IE, Weather, SKYPE, etc)
The pen icon was appearing when i first got the flyer but now it does not appear anywhere at any time in any app!! funny thing is it actually works when i use the tutorial up to the point where the tutorial tells you to tap on the pen config icon ... it is not visible !! I think the pen got trashed when i accepted the last update from HTC
GPS never works regardless and i was under the impression that GPS does not need either wifi or GSM to function!!
Yes, i just got the flyer a week ago
This will be a stupid question but you have an active sim in and you are sure it is a 3g model? I would first suggest running the hc ruu for your device which I know you do not know what that means and it may be hard to find
Flyer
Regarding cell network connectivity: If the Flyer was purchased for anyone but your cell carrier, you probably need to manually enter the APN info for your carrier. This is a common mistake by people who buy unlocked phones, etc. from 3rd party sources. Its easily fixed, and much easier than S-Off, RUU, etc. (which won't fix your problem anyway, if its simply caused by missing APN). You can get your carrier's APN info often by just Googling for it, or just call your carrier and ask for it.
You should find the APN info in Settings>Mobile network, or something like that (I have the WiFI-only Flyer, and its also not with me, at the monent).
The missing pen icon is odd. Does the pen do anything if you touch the screen? Make sure the pen still has battery, and try taking the battery out and re-inserting it. Factory reset may also help.
Did not think of the apn angle

Question Phone calls getting disconnect immidietly

Hi. When someone trying to call me and i answer the call it immidietly disconnecting and it shows that i have missed call, the same happens when I'm trying to call someone. I'm almost 100% sure that this is happening because I deleted some important system app, but i have no idea which one. I tried to restore a few of them, rebooting phone in save mode, removing SIM card and insert it again. Nothing helped. I read somwhere that it could be potentially some spying app, but this is unlikely, because if that was the case then phone calls should work fine in safe mode, but they don't. I attached file with almost all the system apps i deleted.
Update: I reset network settings and figured that phone calls don't work when I have VoWi-Fi turned on, but they worked before without any problems, they work however with VoLTE turned on. I couldn't find any system app that could cause this and it's unlikely that my phone operator has changed something with this. Perhaps it is caused by some router update (Huawei AX3 Pro Quad-Core)?
I think this issue is from your phone operator's side.
Again, if this happens just try this, turn on Airplane mode for a few seconds then turn it off, hope it works.
rickysmith-tth said:
I think this issue is from your phone operator's side.
Again, if this happens just try this, turn on Airplane mode for a few seconds then turn it off, hope it works.
Click to expand...
Click to collapse
I already did that
Update: I spoke with Orange support and this is the informations i got:
,,Phones not on the list of terminals supporting VoLTE in Orange will have The VoLTE and Wi-Fi Calling services systematically disabled. Because the phones have not passed certification, Orange is not able to ensure the correct combination of calls and quality during the call. Connections from non-certified engines can have a negative impact on the service for other users on the network."
,,If the phone was purchased outside of Orange, the service is not supported by Orange"
So they created some magical certificate and only the phones bought from their shop will support this functions and the same phones from outside their shop will not. Nice job Orange! And of course they didn't share any information about this certificate even tho i asked, they just copy and paste the same massages over and over again.
Ps. This line ,,Connections from non-certified engines can have a negative impact on the service for other users on the network." is of course a total crap, because everyone in my house is using this functions and no one has ever complain about quality of phone calls and not a single phone was bought from the operator.
Certification just means the phone has been tested and proven to work. There is no actual certificate. You can use non-certified devices on a network but you run the risk of something not working correctly. Remember that this is their network and they can control who can use and what they can do on it. If they choose to block all non-certified devices then thats up to them. They can let it be a free-for-all but that just makes diagnosing issues alot more difficult for them and for you.
The bit about negative impacts you are misinterpretating. They only say that it CAN have a negative impact, not that it does. I've seen issues on networks where one misbehaving device interferes with all other devices on the network. Thats what the network operator is trying to avoid with certification.
As for the original issue, VoLTE and WiFi Calling are complex technologies. You're calling over a data connection which routes your call to the operators servers which then transfer the call to the standard telephone network. There are so many kinks in the chain here that its never a simple fix. For instance, if your Internet provider uses traffic shaping or you set QoS on your router, they can interfere with WiFi Calling.
I would suggest the biggest issue here though is that you have tinkered with your phone and broke it yourself. You cant blame anyone else but yourself for that. System apps can interlink with each other. Deleting an apparently useless app maybe provide something useful to a critical app. That will then break functionality. Your tinkering also widens all the possible issues that it could be so I dont even know where to start.
richhaynes said:
Certification just means the phone has been tested and proven to work. There is no actual certificate. You can use non-certified devices on a network but you run the risk of something not working correctly. Remember that this is their network and they can control who can use and what they can do on it. If they choose to block all non-certified devices then thats up to them. They can let it be a free-for-all but that just makes diagnosing issues alot more difficult for them and for you.
The bit about negative impacts you are misinterpretating. They only say that it CAN have a negative impact, not that it does. I've seen issues on networks where one misbehaving device interferes with all other devices on the network. Thats what the network operator is trying to avoid with certification.
As for the original issue, VoLTE and WiFi Calling are complex technologies. You're calling over a data connection which routes your call to the operators servers which then transfer the call to the standard telephone network. There are so many kinks in the chain here that its never a simple fix. For instance, if your Internet provider uses traffic shaping or you set QoS on your router, they can interfere with WiFi Calling.
I would suggest the biggest issue here though is that you have tinkered with your phone and broke it yourself. You cant blame anyone else but yourself for that. System apps can interlink with each other. Deleting an apparently useless app maybe provide something useful to a critical app. That will then break functionality. Your tinkering also widens all the possible issues that it could be so I dont even know where to start.
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They said that they will be disabling systematically Wi-Fi Calling and VoLTE on non-certified phones (phones that were not bought directly from them), so that would mean that this is not my fault, but if it is then this is why i shared a list of system apps that i deleted so someone who knows more about them than me could tell me which one have any connection to Wi-Fi Calling. Also this phone I have is marked on their website as supported for this technlology, so tell me what is the diffrence between exactly the same phone bought directly from them and bought somewhere else (from official source of course), except additional bloatware, that would have any complication with those technologies?

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