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[Q] G2X on AT&T data issues?

Sorry if this is redundant folks, but a friend of my stepfather has been having some issues. He recently purchased a G2X, used it for a month or 2 on T-Mobile, but now wants to switch to AT&T with his girlfriend. He's gotten pretty far, getting the IMEI from T-Mo and getting it actually unlocked. He's now got Calls and Texts up and running on AT&T's network, but he can't get any data to work. We know that 3G won't work on it, but we assumed EDGE would.
Any help here? I'm sure it something reasonably simple.
Please and thanks, XDA!

There's a thread in the SGS2 dev section with AT&T's APN settings. They probably need to be changed in the phone.

Mine is unlocked and I tried my wife's at&t sim and had no issues connecting to internet. Not that that helps you, just wanted to throw in my experience. I wonder if it makes a difference which type of rate/data plan the at&t sim is on.
G2X CM7

Thanks Barry, I found that thread and sent him the APN settings. I'll post back tomorrow with results.
And thanks for your input phburks. The reason why yours worked may be that you're running CM. Our g2x is running stock Android.
Sent from my PC36100 using XDA App

WiFi Calling on i727R

You guys may or may not know that Rogers offers a WiFi Calling service, same as T-mobile (they charge though, assholes).
Basically on the i727 ROMs, this isn't an option however if you flash a T989 ROM, you get the option but it doesn't right off the bat obviously. So I found the Rogers wifi calling apk from the Evo 3D, found here.
Now when I get the app into /system/app, it force closes and nothing else, even if I rename it to WiFiCalling.apk, replacing the original t-mo one. With the standard t-mo one, I just get a ER:05 Invalid SIM which I think this is because it is trying to connect to t-mo servers.
Any way to get this working with the i727R with a combination of things from similar devices?

The error is from the sim card tmobile uses a special sim card. There is no way to get wifi calling unless you use voip calls with third party apps. The point of tmobiles wifi calling is solely to make calls in areas with low coverage so they go through tmobiles network through wifi, even if you got it working how would you expect your calls to even work.
Sent from my SGH-T989 using Tapatalk

ebatr8 said:
The error is from the sim card tmobile uses a special sim card. There is no way to get wifi calling unless you use voip calls with third party apps. The point of tmobiles wifi calling is solely to make calls in areas with low coverage so they go through tmobiles network through wifi, even if you got it working how would you expect your calls to even work.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
Rogers is using UMA now as well (like 2 years now). The SIM error I think it's coming from the fact that the rogers SIM is connecting to a t-mobile server rather than the rogers server.
The technology is the same and keep in mind I'm talking about UMA, this isn't the same as VoIP. I think the calls can work if we match up the libraries from the evo and use the right apk, he evo has the same chipset as us also.
Sent from my SGH-T989 using Tapatalk

If I remember correctly when I had t-mo the wifi calling still used your minutes. So the call was routed through their servers. There is no way you are going to get it to work without an active t-mo account.

eagercrow said:
If I remember correctly when I had t-mo the wifi calling still used your minutes. So the call was routed through their servers. There is no way you are going to get it to work without an active t-mo account.
Click to expand...
Click to collapse
Dude there's more companies in the world offering the same service. Such as rogers. If we get the files for Rogers then I'm very sure that we can get it working.
You are right about wifi calling using your minutes but that's nothing new, other carriers have that as well. Do you know how they route calls through their servers? Wificalling.apk from the ROM using the wifi calling feature in the ROM.
Sent from my SGH-T989 using Tapatalk

kr3w1337 said:
Rogers is using UMA now as well (like 2 years now). The SIM error I think it's coming from the fact that the rogers SIM is connecting to a t-mobile server rather than the rogers server.
The technology is the same and keep in mind I'm talking about UMA, this isn't the same as VoIP. I think the calls can work if we match up the libraries from the evo and use the right apk, he evo has the same chipset as us also.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
No error is solely from the wrong sim card, new t-mobile sim cards have something built into them to communicate with tmobiles network when uma calls are made. The sgs2 and amaze 4g were tmobiles first devices to have wifi calling changed in the way they route. I dont think ive ever seen a phone have wifi calling ported to it from another carrier. Since uma is tied to the network there is no way that calls would work when trying to use uma on an unsupported network. Calls will always have to go through some type of service such as skype, wifi calling, google voice etc... So you cant just make wifi calls work on a network that doesnt support it as there is no provider to service those calls.
Sent from my SGH-T989 using Tapatalk

ebatr8 said:
No error is solely from the wrong sim card, new t-mobile sim cards have something built into them to communicate with tmobiles network when uma calls are made. The sgs2 and amaze 4g were tmobiles first devices to have wifi calling changed in the way they route. I dont think ive ever seen a phone have wifi calling ported to it from another carrier. Since uma is tied to the network there is no way that calls would work when trying to use uma on an unsupported network. Calls will always have to go through some type of service such as skype, wifi calling, google voice etc... So you cant just make wifi calls work on a network that doesnt support it as there is no provider to service those calls.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
Did you even read the OP? If Rogers didn't support it on their network, why are they selling it? Rogers doesn't support the phone (didn't install the apk and libraries on the phone), they do however support the service.
The SIM error is because the t-mobile wifi calling apk is looking for a SIM card, I'm wondering if someone can port the rogers wifi calling apk from the evo 3d to read the rogers SIM card. The libraries for wifi calling are already on the phone because of t-mobile having wifi calling. I'm not sure if they need to be modified or not but I know there's someone here that would know that. That person just has to run across this thread :/

First of all, T-Mobile doesn't charge for Wi-Fi Calling. Get your facts straight.
Second of all, you will never be able to "modify" another carrier's Wi-Fi calling and expect it to work on AT&T. It doesn't work that way. AT&T must support it.
Sent from my SGH-T989 using XDA App

Most people are assuming you want this to work on at&t, the op doesnt specify. That would obviously never work, it seems like you want it to work on rogers. Its more complicated then what your making it seems when the t989 released it didnt have wifi calling and it wasnt ported over so easily because for tmobile at least it works differently then past devices thats why the sim error is important, its looking for a tmobile sim card and specifically the newer tmobile sim cards even the older ones get that error. That being said it might work differently for rogers but if its the same porting it over wont be that easy as installing the apk and lib files. There are more components then that to tmobiles wifi calling so you may want to ask in the evo forums for all the components to make wifi calling work on the evo.
Sent from my SGH-T989 using Tapatalk

ebatr8 said:
Most people are assuming you want this to work on at&t, the op doesnt specify. That would obviously never work, it seems like you want it to work on rogers. Its more complicated then what your making it seems when the t989 released it didnt have wifi calling and it wasnt ported over so easily because for tmobile at least it works differently then past devices thats why the sim error is important, its looking for a tmobile sim card and specifically the newer tmobile sim cards even the older ones get that error. That being said it might work differently for rogers but if its the same porting it over wont be that easy as installing the apk and lib files. There are more components then that to tmobiles wifi calling so you may want to ask in the evo forums for all the components to make wifi calling work on the evo.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
Thanks, probably the most helpful direction yet. Although I would like to point out that I wanna get it working for i727R, not i727... If I went through the bother of putting the extra R in there, I would expect people to notice it. The i727R is Rogers. I wanna get this working on Rogers, the post describes Rogers as offering the service and the entire time I only mention Rogers rather than AT&T, I don't see how most people would assume I wanna get this working on AT&T.
Unless most people don't actually read or like to post just to get their post count up regardless of how useless the post was.
I'll start checking out the EVO forums to find out how this thing works a bit more in detail tonight.
Sent from my SGH-T989 using Tapatalk

got it to work on htc sensation with older rom
kr3w1337 said:
You guys may or may not know that Rogers offers a WiFi Calling service, same as T-mobile (they charge though, assholes).
Basically on the i727 ROMs, this isn't an option however if you flash a T989 ROM, you get the option but it doesn't right off the bat obviously. So I found the Rogers wifi calling apk from the Evo 3D, found here.
Now when I get the app into /system/app, it force closes and nothing else, even if I rename it to WiFiCalling.apk, replacing the original t-mo one. With the standard t-mo one, I just get a ER:05 Invalid SIM which I think this is because it is trying to connect to t-mo servers.
Any way to get this working with the i727R with a combination of things from similar devices?
Click to expand...
Click to collapse
I had it worked out on older ROM on my HTC sensation, you can chek out my post at:
http://forum.xda-developers.com/showthread.php?t=1359107
the files that makes it work are coming from kineto package (one company that makes it works for all providers).
this is why all apk(s) for WiFi calling look the same but the one for T-mobile wont work for Rogers (invalid SIM error message, or force close)
Unfortunately as I've upgraded to ICS the older lib libhtc_ril.so is no longer working, so if you have access to EVO from Rogers with latest ROm we could make it work again

on T mobile? help please

can someone please help me as i dont know if i should buy this cellphone.
is $300 a good price?
would it work on t mobile 3g/4g?
can it please be a samsung stock rom?
with touchwiz? i come from a lg g2x and i really like the looking of touchwiz.
i wonder if should buy this phone?
second whats the best modem/radio for t mobile?
one that works with a stock samsung rom with touchwiz.
does this phone has ice cream sandwicch by samsung?
it has touchwiz?
sorrry im a newbie
i really want to use this phone on t mobile with 3g/4g and a samsung ics with touchwiz.
i hope i can have the answer of my questions here. thank you

Use the 989 its the same phone made for tmo
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2

Illnevertell said:
Use the 989 its the same phone made for tmo
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
Click to expand...
Click to collapse
lol they are selling me this one. unlocked the skyrocket soo i guess

shadowpr2007 said:
can someone please help me as i dont know if i should buy this cellphone.
is $300 a good price?
would it work on t mobile 3g/4g?
can it please be a samsung stock rom?
with touchwiz? i come from a lg g2x and i really like the looking of touchwiz.
i wonder if should buy this phone?
second whats the best modem/radio for t mobile?
one that works with a stock samsung rom with touchwiz.
does this phone has ice cream sandwicch by samsung?
it has touchwiz?
sorrry im a newbie
i really want to use this phone on t mobile with 3g/4g and a samsung ics with touchwiz.
i hope i can have the answer of my questions here. thank you
Click to expand...
Click to collapse
I'm running the skyrocket on tmobile's faux-g network. It took about a month and a half to settle on the config, as noted in my sig. Hope this helps a bit.

dca1200 said:
I'm running the skyrocket on tmobile's faux-g network. It took about a month and a half to settle on the config, as noted in my sig. Hope this helps a bit.
Click to expand...
Click to collapse
ergh i hope this works, i been trying so many things, so many radios.. learned we are cross compatible with the I727 (naturally), I727R, T989, T989D, and even the T879 radios >.> .. yet the only time I ever got ANY data (even EDGE which is all we get here) is on a Gingerbread ROM.. ugh. Glad I haven't canceled AT&T yet..
edit: big fat nope for data still *sigh*
edit2: finally got EDGE.

zefie said:
ergh i hope this works, i been trying so many things, so many radios.. learned we are cross compatible with the I727 (naturally), I727R, T989, T989D, and even the T879 radios >.> .. yet the only time I ever got ANY data (even EDGE which is all we get here) is on a Gingerbread ROM.. ugh. Glad I haven't canceled AT&T yet..
edit: big fat nope for data still *sigh*
edit2: finally got EDGE.
Click to expand...
Click to collapse
Maybe I'll try the radio in your sig instead

My skyrocket is running on T-Mobile 4g!!!!
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

Here you go buddy and have fun! Use the VK1 radio...
http://forum.xda-developers.com/showthread.php?t=1507825
Sent from my SAMSUNG-SGH-I727 using xda app-developers app

dca1200 said:
Maybe I'll try the radio in your sig instead
Click to expand...
Click to collapse
I chose this radio because T989 users were saying they got better signal on this than even on Blaze radios. Or something like that. I'd link it but I spent like 7 hours fighting with it, way past my normal bed time, so I hardly remember anything. Here is a screenshot of my phone running the radio to prove it isn't a brick-maker. I also do not know if this supports 3G/4G, because as you can see my tower is EDGE :/

zefie said:
I chose this radio because T989 users were saying they got better signal on this than even on Blaze radios. Or something like that. I'd link it but I spent like 7 hours fighting with it, way past my normal bed time, so I hardly remember anything. Here is a screenshot of my phone running the radio to prove it isn't a brick-maker. I also do not know if this supports 3G/4G, because as you can see my tower is EDGE :/
Click to expand...
Click to collapse
I'm gonna test it here in Vegas as soon it's done charging and nandroid backup. Hopefully, you get 3g/faux-g soon.
Yep can confirm that this radio works with faux-g here in Vegas. It's a little slow right now in the part of town where I'm living but workable. To the OP, radios are important for the type of ROM you want to be using. For example, a GB ROM depends on a GB radio and the same goes for ICS/JB ROMS.

dca1200 said:
I'm gonna test it here in Vegas as soon it's done charging and nandroid backup. Hopefully, you get 3g/faux-g soon.
Click to expand...
Click to collapse
I'd be content with reliable 2G. According to mapping apps there is a whole 1 tower here, 2G, and barely usable. Many times it will show 1 bar and still say 'Emergency Calls Only' >.>
I flashed a T989 ROM to enable Wifi Calling, but I need a new SIM card from T-Mobile (a 'GBA SIM'). It took a while with a bunch of phone tag across T-Mo departments, but I think I finally have a 'GBA SIM' coming at the cost of $0.99. Will report.

zefie said:
I'd be content with reliable 2G. According to mapping apps there is a whole 1 tower here, 2G, and barely usable. Many times it will show 1 bar and still say 'Emergency Calls Only' >.>
I flashed a T989 ROM to enable Wifi Calling, but I need a new SIM card from T-Mobile (a 'GBA SIM'). It took a while with a bunch of phone tag across T-Mo departments, but I think I finally have a 'GBA SIM' coming at the cost of $0.99. Will report.
Click to expand...
Click to collapse
Zefie im using the same rom and radio and kernel as you are and i cannot get to connect to hspa+ sincei only get 1mb of speed or less.
and internet its always slow

Perhaps I may help a bit. Is it showing 4g in the status bar? Also, are you in a 4g area?
i727 is watching you.

shadowpr2007 said:
Zefie im using the same rom and radio and kernel as you are and i cannot get to connect to hspa+ sincei only get 1mb of speed or less.
and internet its always slow
Click to expand...
Click to collapse
dca1200 said:
Perhaps I may help a bit. Is it showing 4g in the status bar? Also, are you in a 4g area?
i727 is watching you.
Click to expand...
Click to collapse
My phone reports that the mobile network type is "EDGE:2". I've assumed that this means I am not in a 3G area. The T-Mo coverage map shows the majority of my area as 2G. There is one small light green spot (assumingly 3g?) over my house, but I think this is just an error on the map. Therefore I am unable to properly test for 3G/4G connectivity.
I've also asked T-Mo if there was any plans to upgrade our tower to 3G, and unlike AT&T who would quickly counter with "but we have 3G in your area!", T-Mo sent me to some activist page to start a local rally to convince local officials to upgrade coverage. I guess this is their way of admitting it is, in fact, a 2g tower.
I've also changed my radio back to T989. I'm not sure if it was a radio issue or what but it seems after a few hours the phone would lose service completely. I'm still testing stuff.

zefie said:
I've also changed my radio back to T989. I'm not sure if it was a radio issue or what but it seems after a few hours the phone would lose service completely. I'm still testing stuff.
Click to expand...
Click to collapse
What is the average signal strength that you usually get? Also , if I read correctly, you are now using the stock t989 radio on the skyrocket? Which would mean GB?
i727 is watching you.

dca1200 said:
What is the average signal strength that you usually get? Also , if I read correctly, you are now using the stock t989 radio on the skyrocket? Which would mean GB?
i727 is watching you.
Click to expand...
Click to collapse
this radio (UVLH1, 4.0.4 ICS latest T989 radio) is also doing the same thing as the note radio. After a while (3-5 hours) the status bar will show service (2-3 bars, even fluctuate) but the system is "Searching" and calls and txts are missed. Need a stable radio...
edit 2: I guess technically I could just ust the original AT&T radio since I only get 2G here anyway, and T-Mobile is re-farming so 3G will eventually work on 1900mhz., the 1700/2100 is going to LTE like it should, thus our skyrockets on AT&T radio should technically be able to get T-Mobile 4G LTE when its available
edit 3: rogers (I727TR) radio probably better than AT&T for the sake of rat unlocked
edit 4: removed edit 1, just gonna use I727R UCLD2

OK. Sorry that the radios didn't really work out. I do encounter some network disconnects here but not a total dealbreaker. I guess we'll have to wait for T-Mobile. On a sidenote, I am finding I have better coverage with this radio.
i727 is watching you.

dca1200 said:
OK. Sorry that the radios didn't really work out. I do encounter some network disconnects here but not a total dealbreaker. I guess we'll have to wait for T-Mobile. On a sidenote, I am finding I have better coverage with this radio.
i727 is watching you.
Click to expand...
Click to collapse
I do like T-Mobile but I will watch from StraightTalk (AT&T Sim) and try again when they grow some more here. I need mobile data to work. I wouldn't mind 30kB/s but I only accomplished that once. Heck I'd even take 5kB/s if it didn't take over 2 minutes to establish one connection. I can't even use MMS most the time because it seems to require 4+ (-90) bars of service before EDGE will even establish a connection.
Edit: Got my 'GBA SIM' today for Wifi Calling. Works great on this ROM combo. I just wish I had mobile internet. I may do some tests as I am secretly hoping this GBA SIM has 3G/4G and maybe my old SIM was a 2G sim.
For archival reference in case I go back to AT&T ROMs, and my sig changes, Wifi calling for T-Mobile works on our Skyrockets using Faux123 ICS T989 Kernel for I727 MOD v001 and SGH-T989 UVLE1 Infamous Resurrection ROM

Zefie thank you for moding faux kernel as i use the rom on your signature and the kernel and Telus modded radio for t898d nd im getting awssome hspa+ speeds today i gotted 10mb download and 2mb up.

shadowpr2007 said:
can someone please help me as i dont know if i should buy this cellphone.
is $300 a good price?
would it work on t mobile 3g/4g?
can it please be a samsung stock rom?
with touchwiz? i come from a lg g2x and i really like the looking of touchwiz.
i wonder if should buy this phone?
second whats the best modem/radio for t mobile?
one that works with a stock samsung rom with touchwiz.
does this phone has ice cream sandwicch by samsung?
it has touchwiz?
sorrry im a newbie
i really want to use this phone on t mobile with 3g/4g and a samsung ics with touchwiz.
i hope i can have the answer of my questions here. thank you
Click to expand...
Click to collapse
Buy a Samsung Galaxy Nexus from the Google Playstore for only 349.00. Its unlocked and works with both ATT and TMobile 4G.
That's what I did for my wife and using a Flashed Skyrocket on T-Moile 4G has been flaky at best.

[Q] [HELP] Galaxy S3 Problems

Hello,
I have a Verizon Samsung Galaxy S3. I have rooted it about a month ago, and just yesterday switched to the AOKP rom. Everything was working well, except I have run into a couple issues.
1. Won't connect to 4G. I have a 4G data plan, and when I am out somewhere, it won't connect to 4G. Anyone know what to do?
2. I can send picture messages, but when I get them, it says "Download". I click Download, and it just loads with 0% and won't download them.
The biggest issue is the data plan not working, so I really need help with that. Thanks to whoever can help! Majorly appreciated!
-John

Can anyone help? I'm leaving for a trip soon and really need it fixed.

What modem are you running? I had data problems too until I upgraded my modem. I can't post a link yet because of my post count but if you google "verizon galaxy s3 modem" you'll find download links to flashable modems. I'm currently getting the best results with I535VRLK3 in my area. You'll just have to see which one works the best for you personally.

Also check what network you're on (I'm on a TW rom right now, so this might not be the right place to look, but... )
Settings - Wireless and Network - More Settings - Mobile Network. Make sure you're on CDMA/LTE
Sent from my SCH-I535 using xda app-developers app

Also in Access Point Names make sure that you have LTE selected and not EHRPD. Some time it auto switches from LTE to EHRPD. If you notice that you are mostly in 3G it probably switched from LTE to EHRPD, at least that is my experience
Sent from my SCH-I535 using xda app-developers app

[Q] T-Mobile wifi calling on Nexus 5?

I recently switched from my T-Mobile Galaxy S3 to a new Nexus 5, but sadly I didn't realize "wifi calling" was a t-mobile post-installed mod only on their branded devices; so Nexus 5 doesn't have that.
Are there any ROMs that contain the T-Mobile wi-fi calling patch? (or something to that effect, though I really appreciate the ability to connect to wifi anywhere in the world and use the phone as if I was in the US)
Thanks!

elwood_j_blues said:
I recently switched from my T-Mobile Galaxy S3 to a new Nexus 5, but sadly I didn't realize "wifi calling" was a t-mobile post-installed mod only on their branded devices; so Nexus 5 doesn't have that.
Are there any ROMs that contain the T-Mobile wi-fi calling patch? (or something to that effect, though I really appreciate the ability to connect to wifi anywhere in the world and use the phone as if I was in the US)
Thanks!
Click to expand...
Click to collapse
I believe from what I read that the Tmobile wifi calling app has to be included with the system as there extra files that can't be simply thrown into an APK. If i recall, it had to do with the modems. I ran a rom on my gs2 that didnt have the wifi calling and spent hours searching for it and found all that info out. Basically if the ROM doesn't come from T-Mobile and is AOSP it's not gonna have wifi calling, and it's not as simple as throwing it all in an APK.
Since the Nexus 5 didn't come with it, you can pretty well give up sadly. I'm just as upset as you are, trust me

ptarrant said:
I believe from what I read that the Tmobile wifi calling app has to be included with the system as there extra files that can't be simply thrown into an APK. If i recall, it had to do with the modems. I ran a rom on my gs2 that didnt have the wifi calling and spent hours searching for it and found all that info out. Basically if the ROM doesn't come from T-Mobile and is AOSP it's not gonna have wifi calling, and it's not as simple as throwing it all in an APK.
Since the Nexus 5 didn't come with it, you can pretty well give up sadly. I'm just as upset as you are, trust me
Click to expand...
Click to collapse
This is working for me
http://forum.xda-developers.com/showthread.php?t=2035720

timothyjok said:
This is working for me
http://forum.xda-developers.com/showthread.php?t=2035720
Click to expand...
Click to collapse
Thats a cool work around, i've seen it done for a over a year, however, google voice is dropping SIP support soon from what I heard. There are an app in the market that does this for you. I can't remember exactly what it's called. A buddy of mine showed it to me a few months back. There was a huge notice under the app that said that google voice was dropping support for this setup soon. /rumormill.

TMobile Settings for SIP Accounts?
I noticed in the new KitKat dialer application has settings for Internet calling (SIP) accounts. I hope, in the near future, TMobile will simply publish those settings so Wifi calling will be easily accessible in the system settings (vs trying bake it into the system settings separately for 4.x and newer or that app for 2.x and below).
I know I watched this thread for over a year when I was on my Nexus4 and it never happened:
http://forum.xda-developers.com/showthread.php?t=2012468

timothyjok said:
This is working for me
http://forum.xda-developers.com/showthread.php?t=2035720
Click to expand...
Click to collapse
that is not the same thing. please do not assume they are.

sf_smith said:
I noticed in the new KitKat dialer application has settings for Internet calling (SIP) accounts. I hope, in the near future, TMobile will simply publish those settings so Wifi calling will be easily accessible in the system settings (vs trying bake it into the system settings separately for 4.x and newer or that app for 2.x and below).
I know I watched this thread for over a year when I was on my Nexus4 and it never happened:
http://forum.xda-developers.com/showthread.php?t=2012468
Click to expand...
Click to collapse
Yea I have been watching that thread for a while, but I noticed tmo has improved the towers around my house, so I can make phone calls at least lol

ptarrant said:
I believe from what I read that the Tmobile wifi calling app has to be included with the system as there extra files that can't be simply thrown into an APK. If i recall, it had to do with the modems. I ran a rom on my gs2 that didnt have the wifi calling and spent hours searching for it and found all that info out. Basically if the ROM doesn't come from T-Mobile and is AOSP it's not gonna have wifi calling, and it's not as simple as throwing it all in an APK.
Since the Nexus 5 didn't come with it, you can pretty well give up sadly. I'm just as upset as you are, trust me
Click to expand...
Click to collapse
This was true with the original version of T-Mobile WiFi Calling, called UMA (Unlicensed Mobile Access). T-Mobile WiFi Calling now uses IMS, which they actually released into the open-source world. Unfortunately no developer has stepped forward to take this open-source information and incorporate it into an N5 rom
https://code.google.com/p/the-ims-open-source-project-for-android/

PaisanNYC said:
This was true with the original version of T-Mobile WiFi Calling, called UMA (Unlicensed Mobile Access). T-Mobile WiFi Calling now uses IMS, which they actually released into the open-source world. Unfortunately no developer has stepped forward to take this open-source information and incorporate it into an N5 rom
https://code.google.com/p/the-ims-open-source-project-for-android/
Click to expand...
Click to collapse
now that is some good news! Hopefully a dev can pick it up. <strike>I almost wanna try it</strike> Although i'd rather let someone else more experienced give it a shot. Between the 2 year old child, college, and work...i'm a little too stacked ATM to attempt this.
**Update, after looking at the code um.....no...I won't be doing that one **

PaisanNYC said:
This was true with the original version of T-Mobile WiFi Calling, called UMA (Unlicensed Mobile Access). T-Mobile WiFi Calling now uses IMS, which they actually released into the open-source world. Unfortunately no developer has stepped forward to take this open-source information and incorporate it into an N5 rom
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This is very useful thank you. Not as awesome an answer as I was hoping but close. I'll search a bit and see what the status is there. Sadly, it doesn't look promising. It appears that code has been released for 2 years now and I haven't seen anyone bundle it into a ROM yet.

elwood_j_blues said:
I recently switched from my T-Mobile Galaxy S3 to a new Nexus 5, but sadly I didn't realize "wifi calling" was a t-mobile post-installed mod only on their branded devices; so Nexus 5 doesn't have that.
Are there any ROMs that contain the T-Mobile wi-fi calling patch? (or something to that effect, though I really appreciate the ability to connect to wifi anywhere in the world and use the phone as if I was in the US)
Thanks!
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New to T-mo so I don't know if this is what you are looking for but if you go into the setting in the phone apk, there is an option for wifi calling. haven't tried it, but thought i'd put it out there.

How would you set up a sip acct to do this?
sent from my hammerhead

ilanzo82 said:
New to T-mo so I don't know if this is what you are looking for but if you go into the setting in the phone apk, there is an option for wifi calling. haven't tried it, but thought i'd put it out there.
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There's Internet Calling, not Wifi. Internet means using a SIP account, like Magicjack or some other VOIP service.

OneMoreBrick said:
There's Internet Calling, not Wifi. Internet means using a SIP account, like Magicjack or some other VOIP service.
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Got it, thanks for clarifying.