yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S II SGH-I777] jazzboyrules:
That's crazy. Do you have to travel to work everyday or can you just work from home? What router do you use?

I have Microcell at home and D-Link DIR 655 router, and I travel an hour each way to work.

According to me, the drain/hour with screen on is equivalent to drain/hour while talking over phone while driving or listening to music.
[AT&T Samsung Galaxy S II SGH-I777] ryude:
I travel about 20 miles to work each way. Both home and work routers are Linksys, although the one at my house is a new dual-band model and the one at work is an old G router.

I don't have a microcell, but at home I get 1 bar 3g. At work I get around 3-4 bars 3g.

I've noticed that as soon as I turn on my alarms, I get a bad wake-lock. I left it overnight with sync on, data on, alarms on, and everything else off. You can see a huge yellow line in battery stats for awake. So I know that alarm clock causes bad wake-lock. As soon as I woke up I turned off my alarms and ever since then my standby drain is excellent and no more awake lines without screen on.

---------- Post added at 12:00 PM ---------- Previous post was at 11:39 AM ----------

Rom: UnOriginal 1.3.5

Kernel: Siyah 2.6.7

Modem: KH7

Battery: Stock
[AT&T Samsung Galaxy S II SGH-I777] gsrrr:
stock battery

UnNamed 2.2.1

Kernel and modem - the ones packaged with the ROM

ondemand - not over/under clocked

facebook not synced

1 - gmail account, contacts, calendar synced

1 - exchange email push

2 - hotmail accounts automatically checked once a day

-widgets-

fancy widget - weather refreshes every 6 hours

smooth calendar widget

I use Llama to turn wifi on/off according to locations I know has wifi. Droidwall to limit data for certain apps. Bloatware freezer and Titanium Backup to freeze/delete apps. The 2 big dips are because of game play and navigation. In the end I downloaded Go Launcher and Go Locker and was playing around with them. Used to see battery drain with the Microcell but I haven't experienced it recently.

EDIT// speak of the devil. Microcell battery drain came back this morning. unplugged from the charger and in 3 hours, it dropped down to ~76%
[AT&T Samsung Galaxy S II SGH-I777] ryude:
Rom: UnOriginal 1.3.5

Kernel: Siyah 2.6.7

Modem: KH7

I don't feel like waiting until 1%, so here it is at 27%. I test too much to just let my phone drain down lol.
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
As promised here are my results with checkrom v6 with siyah 2.6.9. No scripts. Stock battery.

Im kind of disappointed in the battery life but Im definetly going back to 2.6.7.
[AT&T Samsung Galaxy S II SGH-I777] Nosferatu.:
one of these days I'll play with seeing how much I can stretch the battery. I typically throw it on a charger every night but here's what happened one day I forgot to plug it in. I got too playful with it at the end as you can see it bottom'ed off quickly the last few hours.

UnNamed 1.3.1

Stock battery, kernel, etc. that comes with UnNamed.

24hrs ate 66% of the battery with decent usage.
[AT&T Samsung Galaxy S II SGH-I777] DefTaker:
Here's mine...light usage.

I have WiFi ON all the time (I don't bother to disable it); Bluetooth OFF (I'm not using it so no reason to have it on); GPS OFF; background data sync is ON (this includes gmail, currents, calendar, books, google+); Dropbox LAN sync is OFF; stock email app with refresh set to NEVER; Tweetcaster notifications OFF; Facebook app is installed with refresh set to NEVER -- however, I do get push notifications for events, friend requests, etc -- also, FB data is set to sync with existing contacts.

The is the stock i777 battery. Not running any scripts outside of what was included in the init.d with the rom. My config is in my sig below.

So far, so good.
[AT&T Samsung Galaxy S II SGH-I777] jsolares:
Quite happy with ICS via AOKP 3MAR2012 r2, been in front of the computer all day so very light usage.
[AT&T Samsung Galaxy S II SGH-I777] tekky610:
some of you guys need to use your phone more and stop worrying about getting 2-3 days on battery lol. Chargers were made for a reason... (:
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
Lol That's what im saying.
[AT&T Samsung Galaxy S II SGH-I777] :
Im about to break my battery in today. got my phone yesterday been on the charger since then. lets see how it does with really heavy usage. lol.
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
Lol. Yes. Please post the results
[AT&T Samsung Galaxy S II SGH-I777] :
I'm at 69. Lololololol 69......

Sent from Optimus-Prime's SGSII
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
Lmao. Drain it faster.
[AT&T Samsung Galaxy S II SGH-I777] Solkamman:
Right now I'm running SHOstock 1.9.4 with DD 03042012_B. I just got it set up yesterday so I'm still letting it settle in, but I should be in the 5 to 6 hour screen on range (under load, i don't cheat) no problem.

This ROM/kernel combo kicks major ass guys, i highly recommend both. Thanks to shoman and entropy for all of their hard work and responsiveness. You'd think it was their full-time job!

Will post pics once I get a solid run out of this setup.
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
Entropy's ICS. Stock everything.

Watched movies.
[AT&T Samsung Galaxy S II SGH-I777] jhermit:
Setup:

ShoStock 1.9.4

Siyah 2.6.7

WiFi - Always On

BlueTooth - Always On

Sync - On
[AT&T Samsung Galaxy S II SGH-I777] Captpt:
Over 5 hours of display time.. damn, set on AutoBrightness?? I've been using SHOstock for a long time including the present 1.9.4 and have toggled wifi, bluetooth off and sync off yet I'm not even in the same ballpark as your numbers. I don't think I ever came near 2 hours of display time compared to your 5 hrs+

Frustrating to say the least..
[AT&T Samsung Galaxy S II SGH-I777] shoman94:
I had multiple 6hr days I posted in my thread remember... :D
[AT&T Samsung Galaxy S II SGH-I777] ryude:
I've used shostock as wel and the most I got was 4 hours. Everyone's usage, area of coverage, router, etc is going to be different.
[AT&T Samsung Galaxy S II SGH-I777] Captpt:
Thats my point lol... We use the same ROM/Kernel yet the difference in battery is night and day... For the fun of it today I never turned on my wifi or Bluetooth and saw no difference in battery life so I guess I can cross that off the list as reasons for higher drain, tomorrow data will be off for the day and I'll see if thats the cause :)

Just fyi I have no notifiers installed, display is set to aprox 30-35% and Auto sync is off.
[AT&T Samsung Galaxy S II SGH-I777] jhermit:
The crazy thing is that for the first two months I had the phone, i could not get over 11 hours with two hours of screen time. When I got this kernel /ROM combo, it just took off.

BTW, this is stock battery.
[AT&T Samsung Galaxy S II SGH-I777] R6Blitz:
Not typical, but been under the weather and bored.

ICScrewD 2.1, init.doh , Seidio 3200 mah battery, siyah 2.6.13 build 120.
[AT&T Samsung Galaxy S II SGH-I777] ryude:
UnOriginal 1.4.0

DD 03/07

About an hour of Google Music streaming off 3g with screen off , lots of data usage (100mb+), auto-brightness, low signal area (1 bar), and a few reboots from testing.
[AT&T Samsung Galaxy S II SGH-I777] Jmorg83:
First post. Yay.

Running. Shostock 1. 9. 4

Entropy 3-7

Init. Doh for battery life

Stock battery

As you can see by the graph. Mild usage up to about 80% then from there had about 60 minutes of Pandora. Read xda about 30-45 minutes. Had around 150 or so texts and a few phone calls. Using voltage control. Not sure the settings. Think I read it on a Rom post. I can post the screenshots for that. Keep WiFi on all the time and have a weak signal where I am. Generally though even with heavy use I still get 8-10 hours of battery sometimes.
[AT&T Samsung Galaxy S II SGH-I777] lo-fi_engineer:
not waiting until 1%

8hrs and 23min for display...holy sh**!:eek: ...and I thought I was doing well with ~4hrs. I have you beat on total time alive though--almost 3 days with 17% left in the tank:D

Normal battery life is 2.5 days with moderate surfing, apps, calls, and texts. Network connection set to GPRS bc I don't utilized the HSPDA/UMTS.

KH7 stock 2.3.4 (patiently waiting for sourced ICS)

stock battery

no 3/4G data, only wifi

no Bluetooth, no GPS

no app/ battery managers or scripts; however, I do periodically clear inactive apps from RAM (~18/instance)...450MB-->320 b/c apparently they don't clear themselves...?
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
Thanks for all the posts guys. I'll have a link to all of the roms results in the op. Once again thank.
[AT&T Samsung Galaxy S II SGH-I777] mattdm:
Honestly, I don't understand why the manufacturers don't include larger batteries. So far, Motorola is the only one that has caught on to the need for more battery life...and the RAZR Maxx is fugly, so I'd never get it, even if I was on Verizon. Come on, Sammy, build us a beautiful phone that can go for 24+ hours with 6+hours of screen on time. It can be done without sacrificing the thinness of the device...Motorola proved that.
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
The Maxx can do much more than that. Lol
[AT&T Samsung Galaxy S II SGH-I777] mattdm:
Ok, 24+ hours with 10+ hours of screen on time.
[AT&T Samsung Galaxy S II SGH-I777] cwc3:
You will find a nice way to save battery is to set your brightness to the lowest you can, and/or with ExTweaks lower the min_bl & min_gamma. Boy will things look dark but you will at least crank out another hour of screen on time.
[AT&T Samsung Galaxy S II SGH-I777] jdbeitz:
Running Ultimatum 1.0

Entropy 3-7

Undervolted CPU and GPU
[AT&T Samsung Galaxy S II SGH-I777] ryude:
Can you give more info? I'm interested in why the battery life was so short.
[AT&T Samsung Galaxy S II SGH-I777] jdbeitz:
I was using my phone quite a bit at work. I also installed this rom last night so im sure it hasn't settled in yet. I typically get ~4 hours of screen on time.
[AT&T Samsung Galaxy S II SGH-I777] ryude:
UnOriginal 1.4.3

Everything stock
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
That's terrific. Adding this to the op.
[AT&T Samsung Galaxy S II SGH-I777] chvybeatsford:
Here are mine.. Completely stock no root. Something is killing mine when i get home. Will be fine till i get home and have wifi then drops fast. Also android os is high i think. Help ...
[AT&T Samsung Galaxy S II SGH-I777] dandrumheller:
Help for your problem exists in Entropy's known battery drainers thread. Time to start reading! :)
[AT&T Samsung Galaxy S II SGH-I777] chvybeatsford:
That i have been doing .. Very long thread.. Thanks ..
[AT&T Samsung Galaxy S II SGH-I777] ryude:
UnOriginal 1.4.4

Probably could have got better if I was around wifi and wasn't outside in the sun most of the time.
[AT&T Samsung Galaxy S II SGH-I777] mattdm:
F*@%ing 2.5 days?? And 4 hours of screen time??? I hate you, ryude; I'm on the same ROM and kernel as you, and I can't get more than 18 hours/3 hours of screen time.

Can you tell a little more about your setup? Do you use Tasker to automate anything? Do you undervolt or underclock? Do you keep data or wifi on all the time? Use Autostarts? Regularly kill processes you don't need?
[AT&T Samsung Galaxy S II SGH-I777] MaartenK:
Seems that your WIFI is constantly on. Go to advanced WIFI settings and select Sleep policy->"When screen turns off"
[AT&T Samsung Galaxy S II SGH-I777] ryude:
This. I don't use WiFi except when I really need to.
[AT&T Samsung Galaxy S II SGH-I777] chvybeatsford:
Yes it is.. Was eating to much data.. I turn off/on wifi when Im jot home. Leave it on when home. I get crap signal from att in my house and thought was best to leave it on. Ill try that..thanks
[AT&T Samsung Galaxy S II SGH-I777] mattdm:
Ok, I already don't do use wifi except when I need to. What about the other things I mentioned? There has to be some big difference between your setup and mine...there's like a 111% difference between your battery life and mine, and you're getting more screen on time! That's too much of a difference to be explained by hardware variability...
[AT&T Samsung Galaxy S II SGH-I777] ryude:
I don't use any other apps except the one included in the ROM, that's probably the reason. Either you have a rogue app which is draining battery or you have a ton of apps trying to sync data.
[AT&T Samsung Galaxy S II SGH-I777] mattdm:
I have no apps syncing data. I have autosync off, I have notifications turned off in the Market and the Amazon Appstore, I have facebook installed, but I have notifications turned off and chat offline. My weather widget is set to sync only every two hours.

The culprit must be Tasker...I originally installed it to replace JuiceDefender and save battery...but it may be doing the opposite now. I'll disable it and see what happens.
[AT&T Samsung Galaxy S II SGH-I777] ryude:
Oh yea, any app that is for saving battery always kills battery lol
[AT&T Samsung Galaxy S II SGH-I777] mattdm:
True, but I was mostly using it for other amazing things in the last few weeks. It saddens me to have to get rid of it....
[AT&T Samsung Galaxy S II SGH-I777] ryude:
Don't get rid of it just freeze it and see if your battery life improves.
[AT&T Samsung Galaxy S II SGH-I777] mattdm:
Well yeah, that's what I meant. It's frozen right now...we'll see.
[AT&T Samsung Galaxy S II SGH-I777] ryude:
Facebook is a known battery drainer, that would be my next guess.
[AT&T Samsung Galaxy S II SGH-I777] Nosferatu.:
I work in an ER and I've noticed (signal is horrible in there for any phone provider) if I leave the phone antenna on it'll suck the battery dry because it's going in and out of searching for a signal.

I keep the Wifi on while there and I have it set to always stay on whether the screen is off or not so it's on 100% of the time. I don't know how much having the wifi turn off when screen is off makes a significant difference.

I occasionally check up drugs and whatnot on the phone. Average drain is minimal. So far went from 100% to 90% and that was 11 hours ago ;) Screen time on 2 min 45 sec lol.

My main point as I don't know how much the wifi sleep policy effects the battery on the phone. Mine's stock settings except for UnNamed 1.3.1 ROM and I have SetCPU throttle the CPU to a max of 500Mhz when screen is turned off.
[AT&T Samsung Galaxy S II SGH-I777] cwc3:
I tried to push it to 4-5 days. But I had so much stuff I wanted to do that would require at LEAST a restart. So I gobbled up at least 3 hours screen on time in the last day (as you can see). You can also see with CPU Spy, I never restarted (SoD) once.

Currently on ICScrewD, Siyah 2.6.13, Init.Doh 0.4.6b.
[AT&T Samsung Galaxy S II SGH-I777] Alucardis666:
Holy ****! O_O
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
Im testing siyah 2.6.14 right now and will post results as soon as the battery is at 1 percent.

Also sorry for not adding Rom to the op in a while. It won't let me edit the post anymore. It says invalid topic id or something.
[AT&T Samsung Galaxy S II SGH-I777] Bethrezen1453:
Please tell me this results are not with stock battery, please!!!

I can't pass 2 days with 3500mah battery :mad:
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
Lol he is using the stock battery.
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
Checkrom revolution v6 with siyah 2.6.14. Stock battery. No scripts.

(i got a screen of death and had to reboot the phone and for some reason it set the time back 2 hours.)

Don't know why.
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
Op updated. Please post more results. :-P
[AT&T Samsung Galaxy S II SGH-I777] ryude:
I'm about to take pictures, what do you want me to take a pic of in better battery stats?
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
I just want to show people the apps you are using the most. Like in my post above. Just something like that. And thanks for reporting
[AT&T Samsung Galaxy S II SGH-I777] ryude:
UnOriginal 1.4.5 (Test build #2)

Entropy's DD 03/04

Stock battery

Init.d Script

#!/sbin/sh

MMC=`ls -d /sys/block/mmc*`

for i in $MMC; do
echo "cfq" > $i/queue/scheduler
echo "0" > $i/queue/rotational
echo "256" > $i/queue/read_ahead_kb
echo "1024" > $i/queue/nr_requests
echo "0" > $i/queue/iostats;
done

for k in $(busybox mount | grep relatime | cut -d " " -f3); do
busybox mount -o remount,noatime,nodiratime $k;
done;

sysctl -w net.ipv4.tcp_timestamps=0;
sysctl -w net.ipv4.tcp_tw_reuse=1;
sysctl -w net.ipv4.tcp_sack=1;
sysctl -w net.ipv4.tcp_dsack=1;
sysctl -w net.ipv4.tcp_tw_recycle=1;
sysctl -w net.ipv4.tcp_window_scaling=1;
sysctl -w net.ipv4.tcp_keepalive_probes=5;
sysctl -w net.ipv4.tcp_keepalive_intvl=30;
sysctl -w net.ipv4.tcp_fin_timeout=30;
sysctl -w net.ipv4.tcp_moderate_rcvbuf=1;

echo 90 > /sys/devices/system/cpu/cpufreq/conservative/up_threshold
echo 60 > /sys/devices/system/cpu/cpufreq/conservative/down_threshold
echo 40000 > /sys/devices/system/cpu/cpufreq/conservative/sampling_rate
echo 10 > /sys/devices/system/cpu/cpufreq/conservative/freq_step
echo 3 > /sys/module/cpuidle/parameters/enable_mask

CPU Settings

Min: 200Mhz

Max: 1000Mhz

Screen Off: 200Mhz-500Mhz

In-Call: 200Mhz-500Mhz

Voltages

200Mhz - 850mV

500Mhz - 925mV

800Mhz - 1025mV

1000Mhz - 1125mV

Misc Settings

Auto-Rotate: Off

Brightness: Auto

Haptic Feedback: On

Vibration Intensity: 2 (second to lowest setting)

Audible Selection: Off

Screen Mode: Film

Animation: All window animations are shown

Screen timeout: 30 seconds

Touch light key duration: Always off

Auto adjust screen power: On

Use wireless networks: Off

Use GPS satellites: Off

Background data: On

Auto-sync: Off

Motion activation: Off

Back up my data: Off

Automatic Date/time: Off

Wifi sleep policy: Never

I turned Airplane mode on when I went to sleep or entered a building I knew had no signal.
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
Absolutely amazing lol. I'll add it to the op
[AT&T Samsung Galaxy S II SGH-I777] ryude:
Yeah it's the best I ever had. I think the script made a big difference cause most of the other settings I used the last 3 battery pics I posted.

I'm going to try 2/15-C since a lot of people said good things about it.
[AT&T Samsung Galaxy S II SGH-I777] mattdm:
This is on UnOriginal 1.4.4, with autobrightness, mild undervolt, underclocked to 800mhz, and keeping data and wifi off when not in use. I also uninstalled the facebook app and deactivated tasker.
[AT&T Samsung Galaxy S II SGH-I777] ryude:
So it was tasker or Facebook? Cause that's awesome battery life :)
[AT&T Samsung Galaxy S II SGH-I777] sawah:
Stock rom with watchdog. 34% remaining.
[AT&T Samsung Galaxy S II SGH-I777] docskurlock:
Battery Life

This is on ultimatum. Best battery life I've ever had.
[AT&T Samsung Galaxy S II SGH-I777] votinh:
1. How much juice left in the tank?

2. Only 8% on Display? Obviously, you don't use much at all.

3. No Voice Calls?

With that much of usage, I usually get 2dXh and still, 30% left
[AT&T Samsung Galaxy S II SGH-I777] mattdm:
Well I'm not sure actually...I'm really hoping it was just Facebook. Tomorrow I'm gonna reactivate Tasker and see what the effect is.
[AT&T Samsung Galaxy S II SGH-I777] ryude:
Keep me posted.
[AT&T Samsung Galaxy S II SGH-I777] cwc3:
Tasker works wonders for me. The wakelocks are nothing. It takes care of my laziness. If I can pull 3+ days with 5+ hours screen, with tasker, I don't see a reason to uninstall it. It turns off my wifi/data with screen off. Turns on airplane mode at night time, and turns it off in the morning. Also turns off bluetooth/gps at night time just incase I forgot to.

Facebook has hidden autoruns. You can disable those and make it a "only if I have it open" app.
[Verizon Droid Incredible 2] hawknest:
So there's been some requests for this to be posted here

Just updated 2/19/2012

until I can get to my computer here is a link

http://themikmik.com/showthread.php?11223-Purple-MikRunny-Theme-Odex

Ill get the this thread fixed up tomorrow

There's also Red and Blue ones by Peanut475
[Verizon Droid Incredible 2] hawknest:
Reserved
[Verizon Droid Incredible 2] hawknest:
Last time
[Verizon Droid Incredible 2] hawknest:
Purple and black menus
[Verizon Droid Incredible 2] hawknest:
I need a tester for an update I changed quite a bit and want to fix what I can before releasing it

Pm me if interested
[Verizon Droid Incredible 2] hawknest:
New Black and Blue Ice theme up over at the MikMik
[Verizon Droid Incredible 2] zaidyou999:
nice theme

thanks
[Verizon Droid Incredible 2] hawknest:
Thank you, which one are you running?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] kr3w1337:
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?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ebatr8:
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.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] kr3w1337:
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.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] eagercrow:
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.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] kr3w1337:
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.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ebatr8:
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.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] kr3w1337:
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 :/