[Q] Stop WCDMA/GSM network radio completely, as in flight mode - Galaxy S I9000 Q&A, Help & Troubleshooting

Samsungs Android just comes with very hand functions: to stop wifi, to stop bluetooth, GSP or even to stop all radio connections via flight mode. But here's one they missed: Stopping ONLY GSM/WCDMA completely. I must say I have good WCDMA dataplans, but, when I am browsing via Wifi, why consume battery with the network? Since the phone is running vrey well via SIP, I have no reason to consume battery on GSM/WCDMA networks.

And don't you mind being unreachable if someone tries to call you?

I don't know if it's a bug or intended, but when I enable Wi-Fi AFTER enabling flight mode, I connect to Wi-Fi while flight mode continues to block all other radios.

Get APN onoff from CurveFish. It will shut off just carrier data, leaving you able to send and receive calls and texts.

Frostshock said:
I don't know if it's a bug or intended, but when I enable Wi-Fi AFTER enabling flight mode, I connect to Wi-Fi while flight mode continues to block all other radios.
Click to expand...
Click to collapse
It's a feature i used to use it some times, on all my Android devices it worked that way

with froyo u can disable data connection without an extra app
just press and hold for few seconds the off button and switch data off...

re
ppeccin said:
And don't you mind being unreachable if someone tries to call you?
Click to expand...
Click to collapse
He is calling me via Wifi, d'uhhh!
It's a f'kin smarthone! That's why they call it "smart". Haven't you heard about SIP?

works
Frostshock said:
I don't know if it's a bug or intended, but when I enable Wi-Fi AFTER enabling flight mode, I connect to Wi-Fi while flight mode continues to block all other radios.
Click to expand...
Click to collapse
Also works for me, too bad I don't have bluetooth though.
Keatonm said:
Get APN onoff from CurveFish. It will shut off just carrier data, leaving you able to send and receive calls and texts.
Click to expand...
Click to collapse
No, you don't understand, it's about disabling the whole carrier stuff. I receiva calls via VOIP, my carrier doesn't even have voice an that SIM.
D'uh, maybe I should make my text red so people would read it more carefully.

Well perhaps you need to calm down and not act so rudely to the people trying to help you. There is also a simple explanation for this. The GSM/WCDMA modes are essential to be kept on if any sort of data connection is required. Obviously, not if you don't require the HSPDA or 3G connection, you may enable flight mode and turn on wifi manually. This has also been mentioned above.
In the way you have stated it, perhaps you should attempt reading all of the replies.

Dial *#*#4636#*#* -> Choose "Phone information" -> Scroll down and there is a button to turn off the radio.

d'uh
*snipsnapchildishcrap*

thank you!
@litobro, I am pleased that there are people trying to help, but repeating the same information over and over again just makes me feel, well.. bad!
@NetCopAD, thank you very much, that is the solution, wouldn't have thought!
@Adevem, you are right. But I searched over the internet for over 2 days and, well, I thought there is no easy answer. It really makes me feel a little dumb, but noone knows everything.
But, maybe, just maybe, it we kindly ask a mod, he would move this thread where it should be, if this is not the right section.
I am already thinking at an app that could switch automatically between Wifi and WCDMA. That's because I either need wifi or WCDMA. Switching automatically to WCDMA if there's no wifi (lost signal) would be great and would save battery.
So, if wifi signal falls below -xx dbm it would stop wifi and enable radio. We would only have to monitor rssi.

Have you tried the airplane mode and then enabling wifi?

rav0r said:
Also works for me, too bad I don't have bluetooth though.
Click to expand...
Click to collapse
litobro said:
Have you tried the airplane mode and then enabling wifi?
Click to expand...
Click to collapse
Anyway, using the service code is a better option. Although an application that automates everything would be great.
Checkingt here http://developer.android.com/reference/android/net/wifi/WifiManager.html
and here http://developer.android.com/reference/android/telephony/ServiceState.html#STATE_POWER_OFF
seems to provide the basics for an app that just comutes between wifi and carrier radio.

The app JuiceDefender might be helpfull.

NetCopAD said:
Dial *#*#4636#*#* -> Choose "Phone information" -> Scroll down and there is a button to turn off the radio.
Click to expand...
Click to collapse
How do I retain the chosen settings in this screen. For example, I would like to retain the option of only WCDMA.

hauseofraf said:
How do I retain the chosen settings in this screen. For example, I would like to retain the option of only WCDMA.
Click to expand...
Click to collapse
You can choose WCDMA only, in the standard settings menu of the phone. Look for mobile network settings.

NetCopAD said:
You can choose WCDMA only, in the standard settings menu of the phone. Look for mobile network settings.
Click to expand...
Click to collapse
That's the thing, how do I specifically select WCDMA? In the secret service menu, there is no "okay" button to retain your selected choices. "home button" doesn't work, rocker buttons don't work etc.

It's not in the secret menu. It's in the standard menu for mobile network settings.
Wireless and network -> Mobile network settings -> Network mode -> WCDMA only

NetCopAD said:
It's not in the secret menu. It's in the standard menu for mobile network settings.
Wireless and network -> Mobile network settings -> Network mode -> WCDMA only
Click to expand...
Click to collapse
That's the thing, I don't have that path on my i9000M. That's why I'm wondering how to retain this via the secret menu.

Related

Is there a widget to turn on/off the 3g?

I always hate going into the settings to enable/disable data. Is there a widget in the market that does that?
Good question.
How would a 3G switch function differently than enabling Airplane mode?
Curious as well...
bishop72 said:
I always hate going into the settings to enable/disable data. Is there a widget in the market that does that?
Click to expand...
Click to collapse
Kinda but no. Switchpro widget has both airplane and 3g on/off switches. As of right now only the airplane part works.
http://www.androlib.com/android.application.alei-switchpro-CFBF.aspx
bishop72 said:
I always hate going into the settings to enable/disable data. Is there a widget in the market that does that?
Click to expand...
Click to collapse
Yes! Theres an app for free called Widgetsoid in the Market. I just found out about it today in the 'post your homescreens' thread. Works great!
SV
So what is the difference between Airplane mode and turning off 3G?
I am pretty sure airplane mode kills wifi and bluetooth as well, thou you can turn wifi back on.
Sent from my Xoom using XDA App
I use Widgetoid (think thats it). Turn on Airplane mode and you're all good. Just need to switch back on WiFi.
Lars1967 said:
So what is the difference between Airplane mode and turning off 3G?
Click to expand...
Click to collapse
There is no officially supported way to disable 3G besides Airplane Mode. Airplane Mode disables the 3G radio, while widgets just change the APN to something that doesn't work.
nindoja said:
There is no officially supported way to disable 3G besides Airplane Mode. Airplane Mode disables the 3G radio, while widgets just change the APN to something that doesn't work.
Click to expand...
Click to collapse
You can disable 3G from mobile network settings. Just uncheck data enabled.
sangreal06 said:
You can disable 3G from mobile network settings. Just uncheck data enabled.
Click to expand...
Click to collapse
Sangreal, What benefit (or not) would this have over engaging Airplane mode?
Lars1967 said:
Sangreal, What benefit (or not) would this have over engaging Airplane mode?
Click to expand...
Click to collapse
Airplane mode disables all of the radios, and you have to re-enable them each time you power the device on.
sangreal06 said:
Airplane mode disables all of the radios, and you have to re-enable them each time you power the device on.
Click to expand...
Click to collapse
I've noticed that unchecking that doesn't actually power down the 3G radio. It will still show up in the power monitor under settings. I'm aslo curious if there is a way without using airplane mode to have the tablet not bug about activation every time it starts up.
Thank you!
sangreal06 said:
You can disable 3G from mobile network settings. Just uncheck data enabled.
Click to expand...
Click to collapse
True, but I meant from a programming standpoint, so a widget could do it. Maybe it's been added in the 3.0 SDK but I haven't heard about it. I know google took out the ability to turn on and off the 3G with a program because it can cost users money.

[Q] Can i setup my T-mobile Galaxy Tab to use wifi only?

Im trying to make my tab use wifi only becuase i don't have t-mobile service anymore. Is there anyway to get it to stop saying "searching" all the time? I have factory reset my tab but unlike other devices, there is no initial setup so i can choose WIFI only. Anyone have any ideas?
I use;
https://market.android.com/details?id=myc.phone.PhoneInfo&feature=search_result
then turn off the radio.
(also popped the sim out as I was getting occasional SIM Detached messages and reboots, so figured it was simpler to just take the SIM out and turn off the radio)
jadamson145 said:
Im trying to make my tab use wifi only becuase i don't have t-mobile service anymore. Is there anyway to get it to stop saying "searching" all the time? I have factory reset my tab but unlike other devices, there is no initial setup so i can choose WIFI only. Anyone have any ideas?
Click to expand...
Click to collapse
Go into Airplane mode, and then turn on the wifi.
Thats what I do. It uses less battery.
Also deactiveate "Data network mode"
captirwin said:
Go into Airplane mode, and then turn on the wifi.
Thats what I do. It uses less battery.
Also deactiveate "Data network mode"
Click to expand...
Click to collapse
Me too, same as above, but then bluetooth headsets, printers, and keyboards won't work.
rangercaptain said:
Me too, same as above, but then bluetooth headsets, printers, and keyboards won't work.
Click to expand...
Click to collapse
Rangercaptain...where do you think I got the idea from? YOU.
THANKS.
Well, thanks for sharing! You have a good answer!
I disconnect my data plan and using tab as phone. join wifi at work and home and enjoy phone and tab same time lol.
jadamson145 said:
Im trying to make my tab use wifi only becuase i don't have t-mobile service anymore. Is there anyway to get it to stop saying "searching" all the time? I have factory reset my tab but unlike other devices, there is no initial setup so i can choose WIFI only. Anyone have any ideas?
Click to expand...
Click to collapse
Just flash overcome! Then follow simple instructions to turn off radio.. I its really simple.
Edit:
(copy/pasted directly from Overcome tweaks guide)
"Turning the 3G-based Tab into a "Wi-Fi only" device (Disabling the GSM Radio!)
To disable the GSM Radio:
- Bring up your Phone/Dialer program
- Enter: *#*#4636#*#*
- Select Device Information
- Scroll to the bottom
- Tap the "Turn Off Radio"
This will disable all Cell/GSM/EDGE connections – should only be used for those who do not subscribe to a data/cell package. This will leave Bluetooth/Wi-Fi (I think) on so you can still connect Bluetooth devices etc., as opposed to switching to Airplane mode which turns everything off! "
Thanks team Overcome. I have done this on two tabs and this works perfectly. Hope it helps?
Sent from my GT-P1000 using XDA Premium App
I use this:
https://market.android.com/details?id=net.geekherd.airplanemode
You can turn off the radio, use wifi and I believe it allows you to use bluetooth as well.
Sorry to dig up an old thread, but I wanted to offer an alternative solution for anybody still trying to find a persistent solution to creating a Wifi only Galaxy Tab. I use Llama to set up a start up event that turns Airplane mode on, waits 1 minute, and enables Wifi. It has worked well for me for the past several months. Here's the run down of my Llama configuration:
Event Name > Start Up
Conditions -
Phone reboot > After start up
Actions -
Toggle Airplane Mode > Airplane Mode On
Queue Another Event >
Event Name > WiFi On
Event delay > 1 minute
Actions -
Toggle WiFi > WiFi On
I hope this helps someone out.

3g/H packet data problem - N7000

Hi there! would like to seek your help regarding my galaxy note, I encounter packet data on/ff and cannot connect to mobile data (internet) but my sim card is working (can send sms and call). i just put my phone yesterday to flight mode and after that it cannot able to connect to internet. I did factory reset and some wipe of cache.. is there any advice? my phone is rooted already with franco kernel (stock ICS rom only). Please help Sir.
Please do not "FACTORY RESET" , You could potentially brick your phone.
1. Try to see if you have your "DATA" on. With DATA off 3g/h/h+ will not work only wifi would.
2. Worst case scenario, take out your SIMCARD and put it back again.
hackerboi said:
Please do not "FACTORY RESET" , You could potentially brick your phone.
1. Try to see if you have your "DATA" on. With DATA off 3g/h/h+ will not work only wifi would.
2. Worst case scenario, take out your SIMCARD and put it back again.
Click to expand...
Click to collapse
Hi, Thanks for the reply,
I already did some of the basic steps, It just so happen that the history of this problem was because after I put my phone to "flight mode for about 5 hours" and the the packet data icon "3g/H" were no "DOWN arrow" color orange where as I know is a sign of good connection. but the icon only lit the "UP arrow" please help
May also be a issue with having incorrect APN information (Some carriers do not Automatically push out the right details)
Under settings> Wireless And Networks > Mobile Networks > Access Point Names
Check the listings are correct for your network.
Ranger58 said:
May also be a issue with having incorrect APN information (Some carriers do not Automatically push out the right details)
Under settings> Wireless And Networks > Mobile Networks > Access Point Names
Check the listings are correct for your network.
Click to expand...
Click to collapse
Hi, Actually my phone's packet data was working well before I put it in "flight mode" meaning my APN settings is OK. for reference here are some of my screen shots which I edit to see the ICONS status,,thanks for the help!.
Don't know what still seems like a apn issue. Only because I would expect atleast one reply from the network during the connection discussions.
The fact that the orange arrow never lights up to me indicates that the network never gets the sent packets.
Have you tried anything like the apn on/off alps from the the playstore.
Otherwise I cannot see why having airplane mode on for a while would permanently ruin your data connection
Sent from my GT-N7000 using Tapatalk 2
Ranger58 said:
Don't know what still seems like a apn issue. Only because I would expect atleast one reply from the network during the connection discussions.
The fact that the orange arrow never lights up to me indicates that the network never gets the sent packets.
Have you tried anything like the apn on/off alps from the the playstore.
Otherwise I cannot see why having airplane mode on for a while would permanently ruin your data connection
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
Hi, yup but as you know some apn tweatering app is no longer feasible with ICS,
Yes, I am also not convince about after flight mode / airplane mode activation that causes my phone not to connect to the internet. I guess this is related to root bug, this was my 1st time to enable flight mode under rooted condition so I wonder that this might be the root caused. Can anyone suggest to unroot? Please advice, Thanks and Mabuhay!
Bump
Sorry to be bumping this old thready but was the OP able to ressolve the problem? I have been having exactly the same issue but only intermitantly, if I reset my phone everything is fine for a while and then all of a sudden I loose the orange arrow and will only see green.
I am unable to recieve calls or make them, no internet etc. I am on Tmobile UK now EE, have gone through the standard error checking with tmobile but no luck, first they said it was the network being down and no they say it's my phone but I don't see how it's been fine for ages and all of a sudden I have this problem.
It's totally random, I have decent reception so I have say 3g or h+ with 2 or 3 bars but no orange arrow
Any ideas?

Pixel 5 wi-fi calling on 3UK

Hi,
I'm seriously considering getting a good refurbished Pixel 5, but I would like to know if it's possible to set wi-fi calling preferences on 3UK.
To explain, I live in an area with very spotty cellular coverage so WiFi calling is a must have, but unless I can set the phone to prefer WiFi calling over cellular calling, I have to put my phone into airplane mode in my house because there is just enough cellular signal strength to prevent the phone from automatically using wi-fi for calls. Failure to use airplane mode results in many dropped calls because the signal isn't strong enough to support the call.
Any assistance gratefully received.
Thanks
stooby said:
Hi,
I'm seriously considering getting a good refurbished Pixel 5, but I would like to know if it's possible to set wi-fi calling preferences on 3UK.
To explain, I live in an area with very spotty cellular coverage so WiFi calling is a must have, but unless I can set the phone to prefer WiFi calling over cellular calling, I have to put my phone into airplane mode in my house because there is just enough cellular signal strength to prevent the phone from automatically using wi-fi for calls. Failure to use airplane mode results in many dropped calls because the signal isn't strong enough to support the call.
Any assistance gratefully received.
Thanks
Click to expand...
Click to collapse
Works
dlb134 said:
Works
Click to expand...
Click to collapse
So it's possible to set the preferences to use Wi-fi calling whenever there's a wi-fi connection, even if there's a weak cellular signal?
This is on the UK 3 network?
Thanks
stooby said:
So it's possible to set the preferences to use Wi-fi calling whenever there's a wi-fi connection, even if there's a weak cellular signal?
This is on the UK 3 network?
Thanks
Click to expand...
Click to collapse
It'll give you the option whether there's WiFi or not. It's either on or off.
Yes, 3uk
Thanks, but I don't think I explained my question very well.
What I'm wondering is, when you turn wi-fi calling on, is there another setting to prefer calling via wi-fi, or calling via cellular?
Cheers for your help.
stooby said:
Thanks, but I don't think I explained my question very well.
What I'm wondering is, when you turn wi-fi calling on, is there another setting to prefer calling via wi-fi, or calling via cellular?
Cheers for your help.
Click to expand...
Click to collapse
I know this may not be what you're looking for but it may help..
I am on Pixel 5 Android 12L stock ROM
When turning WIFI Calling on, you get this menu option.
I'm imagining if have WIFI Calling options, then the menus would be the same, being the same phone/firmware.
But I obviously can't confirm.
Thanks!
That's exactly what I was looking for.
Which network are you on?
stooby said:
Thanks!
That's exactly what I was looking for.
Which network are you on?
Click to expand...
Click to collapse
Shoot sorry, meant to include it in my post I'm sorry. I know I'm in the US, and I'm on AT&T, but I hope it does some helping!
andybones said:
Shoot sorry, meant to include it in my post I'm sorry. I know I'm in the US, and I'm on AT&T, but I hope it does some helping!
Click to expand...
Click to collapse
Thanks for your help.
stooby said:
Thanks for your help.
Click to expand...
Click to collapse
Just a shot in the dark, but changing your default language to US English might work. Here in Canada I had to do that to get "Hold for Me" working
xunholyx said:
Just a shot in the dark, but changing your default language to US English might work. Here in Canada I had to do that to get "Hold for Me" working
Click to expand...
Click to collapse
Thanks for the suggestion but I think the availability of the wi-fi calling preferences options are based on the mobile network.
I'm currently using a Samsung Galaxy S20FE because it has Bixby Routines, which lets me disable the cellular radios when the phone connects to my home WiFi network. Obviously, this isn't as elegant as allowing me to set a wi-fi calling preference.
The point is that this is a dual SIM phone - I've noticed that it offers wi-fi calling preferences for my O2 UK SIM but not for my 3UK SIM.
I don't think I'm going to get any luck with this unless I change network.
Thanks to all for your assistance.
stooby said:
Thanks for the suggestion but I think the availability of the wi-fi calling preferences options are based on the mobile network.
I'm currently using a Samsung Galaxy S20FE because it has Bixby Routines, which lets me disable the cellular radios when the phone connects to my home WiFi network. Obviously, this isn't as elegant as allowing me to set a wi-fi calling preference.
The point is that this is a dual SIM phone - I've noticed that it offers wi-fi calling preferences for my O2 UK SIM but not for my 3UK SIM.
I don't think I'm going to get any luck with this unless I change network.
Thanks to all for your assistance.
Click to expand...
Click to collapse
Very interesting.
Now I don't use it, I should start looking into it, but I just don't have any uses off the top of my head, like what I foresee could work to your advantage.
Instead of Bixby, why not give tasker a try? It should be able to allow you to do what Bixby does and probably more.
You should def. be able to set up a Tasker "Routine" that allow you to disable the cellular radio when you connect to WIFI network, and maybe even a Tasker for setting the WIFI calling preference?
I wish you the best of luck with everything!
andybones said:
Very interesting.
Now I don't use it, I should start looking into it, but I just don't have any uses off the top of my head, like what I foresee could work to your advantage.
Instead of Bixby, why not give tasker a try? It should be able to allow you to do what Bixby does and probably more.
You should def. be able to set up a Tasker "Routine" that allow you to disable the cellular radio when you connect to WIFI network, and maybe even a Tasker for setting the WIFI calling preference?
I wish you the best of luck with everything!
Click to expand...
Click to collapse
I actually tried Tasker first (I've used it many times over the years) but it isn't able to toggle Airplane mode without having to either root the phone or grant specific permissions via ADB (each time the phone is rebooted).
In case you are wondering, I have configured Airplane mode to leave WiFi and Bluetooth untouched, so it actually only toggles the cellular radio on and off.
Since Bixby Routines are "baked in" on Galaxy devices, it has no restrictions on setting Airplane mode on/off. Obviously, this solution is only available on Galaxy devices, which is why I'm using this S20FE 5G as my daily driver at the moment.
With any other devices, I have to remember to turn airplane mode on when I'm at home to force wi-fi calling. The problem is that I often forget to turn airplane mode off again when I'm out and about.
Thanks again to everyone for your help and suggestions.
stooby said:
I actually tried Tasker first (I've used it many times over the years) but it isn't able to toggle Airplane mode without having to either root the phone or grant specific permissions via ADB (each time the phone is rebooted).
In case you are wondering, I have configured Airplane mode to leave WiFi and Bluetooth untouched, so it actually only toggles the cellular radio on and off.
Since Bixby Routines are "baked in" on Galaxy devices, it has no restrictions on setting Airplane mode on/off. Obviously, this solution is only available on Galaxy devices, which is why I'm using this S20FE 5G as my daily driver at the moment.
With any other devices, I have to remember to turn airplane mode on when I'm at home to force wi-fi calling. The problem is that I often forget to turn airplane mode off again when I'm out and about.
Thanks again to everyone for your help and suggestions.
Click to expand...
Click to collapse
Very interesting.
I'm not familiar with Bixby but it sounds awesome! Great feature.

Question Wifi calls

Can anyone tell me if the radio has to be on in order to make wifi calls. When I'm in airplane mode and connected to a wireless network I get a message to turn airplane mode off. I have really bad cell service where I am and making calls is hit and miss.
jd1639 said:
Can anyone tell me if the radio has to be on in order to make wifi calls. When I'm in airplane mode and connected to a wireless network I get a message to turn airplane mode off. I have really bad cell service where I am and making calls is hit and miss.
Click to expand...
Click to collapse
I keep my radio off all the time (unless I leave my house) wifi on, airplane mode off and make and receive calls just fine.
LeoD said:
I keep my radio off all the time (unless I leave my house) wifi on, airplane mode off and make and receive calls just fine.
Click to expand...
Click to collapse
If you have airplane mode off how are you turning the radio off? That's what I'm using to turn it on or off.
jd1639 said:
If you have airplane mode off how are you turning the radio off? That's what I'm using to turn it on or off.
Click to expand...
Click to collapse
Mobile data always active in developer options set to off and I toggle mobile data off in Internet options. Unless I'm misunderstanding that should accomplish what your trying to do. For me this gives me wifi calling and receiving while I'm home (cause like you I have terrible reception) but when I leave my home and can pick up a signal I will still get calls etc
I must be missing something. I've turned off mobile data always active off in developer options and mobile data off in internet options. Right now I have no cell service, because it's so crappy here, am connected to my network but I still can't make calls. When I try I get a "mobile network is not available" error.
jd1639 said:
I must be missing something. I've turned off mobile data always active off in developer options and mobile data off in internet options. Right now I have no cell service, because it's so crappy here, am connected to my network but I still can't make calls. When I try I get a "mobile network is not available" error.
Click to expand...
Click to collapse
Check out under Network & internet, then internet. Your mobile network should be listed on top. ( I use google fi and it is listed) click the setting and make sure wifi calls is turned on. If it isn't there for you I would look around or check with your provider and make sure they allow wifi calling?
Or maybe someone else that uses the same provider as you can chime in here.
LeoD said:
Check out under Network & internet, then internet. Your mobile network should be listed on top. ( I use google fi and it is listed) click the setting and make sure wifi calls is turned on. If it isn't there for you I would look around or check with your provider and make sure they allow wifi calling?
Or maybe someone else that uses the same provider as you can chime in here.
Click to expand...
Click to collapse
Thanks for helping me on this. Wifi calling is turned on. My carrier is Verizon. Could you look on your phone and tell me what it says below wifi calling, the smaller text, under Network & Internet, internet. Mine says "Call over mobile network" when wifi calling is enabled and "Off" when it's disabled. The call over mobile network seems to imply to be that wifi calling isn't active.
jd1639 said:
Thanks for helping me on this. Wifi calling is turned on. My carrier is Verizon. Could you look on your phone and tell me what it says below wifi calling, the smaller text, under Network & Internet, internet. Mine says "Call over mobile network" when wifi calling is enabled and "Off" when it's disabled. The call over mobile network seems to imply to be that wifi calling isn't active.
Click to expand...
Click to collapse
Yeah seems so. Mine says mobile data won't auto connect.
I'm unsure if it will help you however can't hurt to check or try. Under my provider (google fi) I click on the gear and my settings are mobile data, roaming, w+ connections and allow 2g are toggled off. My preferred network type is fixed on LTE and off course wi-fi calling under calling.
I checked under verizon and it should allow the wifi calling however it isn't very clear if it only allows it as a fall back option.

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