[Q] Port wifi calling from T-Mobile Z3 to Z2? - Xperia Z2 Q&A, Help & Troubleshooting

Is anyone thinking of attempting to try and see if a port would work? T-Mobile's wifi calling should work as it's just baked into the ROM. Just picked up a new Z2 off that ebay deal for $399 as I read that the bootloader on the T-Mobile Z3 is not unlockable.

A port should work as long as someone spends the time to do it. I'm gonna try to do it myself because it seems that the Z2 lacks US carrier support on the forums, so not likely going to see any of the current custom ROM makers do it for T-Mobile US.
I have WiFi Calling working perfectly on a Galaxy Note II AT&T version running a T-Mobile ROM (baseband still AT&T). So the usual rumor that only a T-Mobile branded phone can use WiFi Calling is simply not true. Any phone can use the feature as long as you have a T-Mobile SIM card plus a ROM that has the WiFi Calling feature embedded.

doraemon6688 said:
A port should work as long as someone spends the time to do it. I'm gonna try to do it myself because it seems that the Z2 lacks US carrier support on the forums, so not likely going to see any of the current custom ROM makers do it for T-Mobile US.
I have WiFi Calling working perfectly on a Galaxy Note II AT&T version running a T-Mobile ROM (baseband still AT&T). So the usual rumor that only a T-Mobile branded phone can use WiFi Calling is simply not true. Any phone can use the feature as long as you have a T-Mobile SIM card plus a ROM that has the WiFi Calling feature embedded.
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That's good to know. I'll keep an eye out to see what you come up with.

Bump with the hopes of someone doing this soon....

Related

SM-G850F and SM-850M what's the deal ?

Well I have 2 unopened Samsung Alphas sitting in front of me.
1. SM-G850F (International from Germany)
2. SM-G850M (Unknown Origin)
I have Many sim cards that i am using. But the main one i want to use is the T-mobile USA.
What i have gathered reading is the F has the custom recovery where as the rest A,W(QuadCore) Y(Asia ?) do not.
All of them seem to have Root.
Version A is tuned for AT&T
Version W is tuned for T-Mobile USA LTE (But is a Quad)
etc etc
But the info on the M Bands is very vague, as in the Band listing on the website is always different listed for the M.
So what are my advantage of picking one over the other (M of F) for T-Mobile USA ?
As far as i know every other version than the A has exynos chipset with the octa core cpu and the A has qualcomm with quad core cpu and thats why almost every other version has root and the A dont.
Sent from my SM-G850F
Why the hell are they doing this ...
So how different is the M from F ?
I cant find any info regarding the M having custom recovery also.
Germanese said:
Why the hell are they doing this ...
So how different is the M from F ?
I cant find any info regarding the M having custom recovery also.
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Havent really looked into it.
Sent from my SM-G850F
Well i just took a bite xD
SM-G850M on Tmobile USA
I have 4G Stable aka LTE
Very happy with my outdated discontinued phone hahahahahah
I agree the Bands Info on 850 M is vague or conflicting .
But it seems that you should have the
1700/ 2100 LTE Bands for Tmobile 4G LTE and the 1900 band for 3G
needed with the M Version.
Are you getting full performance on 3G , 4 G and LTE on your Alpha ? ?
Yes i am getting all bands 2g 3g 4g H+ LTE depending where i am at sometimes E. Though during a call i only get lte or h if non of those my data doeent work during a call
SM-G850M (Vodafone) = Branded
SM-G850F (Europe) = Non Branded
cqdiep said:
I upgraded to 5.02, then did factory reset. That fixed it and I'm getting LTE on ATT.
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Can you tell me if the G850M is carrier-branded in any way? I know the G850F isn't, and I was wondering if the same is true for the G850M. Basically, I would like to receive Android updates directly from Samsung without carriers getting in the way, and I would like free use of the Portable WiFi Hotspot/Tethering feature (even without having it as part of your plan). I know Nexus phones allow you to do this.
Thanks!
unif said:
Can you tell me if the G850M is carrier-branded in any way? I know the G850F isn't, and I was wondering if the same is true for the G850M. Basically, I would like to receive Android updates directly from Samsung without carriers getting in the way, and I would like free use of the Portable WiFi Hotspot/Tethering feature (even without having it as part of your plan). I know Nexus phones allow you to do this.
Thanks!
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850M is not carrier-branded...it's unlocked and sold by Vodafone. I rooted mine, so can't get updates through Samsung anymore.
I did use it to create a Wi-Fi hotspot to tether my laptop. It works well, and I do not pay extra for this feature on ATT.
cqdiep said:
850M is not carrier-branded...it's unlocked and sold by Vodafone. I rooted mine, so can't get updates through Samsung anymore.
I did use it to create a Wi-Fi hotspot to tether my laptop. It works well, and I do not pay extra for this feature on ATT.
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Thanks very much for your responses! I greatly appreciate it.
I found a 850M on eBay for $89.99 couldn't believe it, excellent condition like new. I rooted it, installed another XDA members 4.4.4 ROM but couldn't notice any difference from stock, works fine on Cricket (At&t) prepaid, 4G same speeds as my previous S5 Mini At&t version phone, around 8mbps down, 4mbps up, half that when on a call. I cannot find many 850M's on the market, it's amazing. I want to buy at least 1-2 more, these are one of the best phones Samsung produced, especially one of the last good phones with removable battery! There are more 850F's on eBay but may not have as fast data with At&t as they are EU version. After my experience with S5 mini on 5.1.1 ROM I noticed much faster battery drain and prefer 4.4.4 performance. Hope my post helps someone=) -Aje
ROM
newaje said:
I found a 850M on eBay for $89.99 couldn't believe it, excellent condition like new. I rooted it, installed another XDA members 4.4.4 ROM but couldn't notice any difference from stock, works fine on Cricket (At&t) prepaid, 4G same speeds as my previous S5 Mini At&t version phone, around 8mbps down, 4mbps up, half that when on a call. I cannot find many 850M's on the market, it's amazing. I want to buy at least 1-2 more, these are one of the best phones Samsung produced, especially one of the last good phones with removable battery! There are more 850F's on eBay but may not have as fast data with At&t as they are EU version. After my experience with S5 mini on 5.1.1 ROM I noticed much faster battery drain and prefer 4.4.4 performance. Hope my post helps someone=) -Aje
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Can you provide a link to the ROM you installed and instructions? Thanks!
---------- Post added at 06:16 AM ---------- Previous post was at 06:16 AM ----------
Can you provide a link to the ROM you installed and instructions? Thanks!
Here is the link to the ROM.
http://forum.xda-developers.com/gal...m-rom-lukrangelo-v1-brazil-zto-4-4-4-t3116098
However I didn't notice any difference from the stock ROM, was surprised to see the same original games included which I consider bloatware. Anyway the phone works great after rooting and uninstalling a lot of things, although it did suddenly crash and restart yesterday while on a phone call, first and only time in about a week I've had it. I love this phone and the size is perfect.
Really wanted to try this ROM but DL link is no longer working and no one is replying lately.
http://forum.xda-developers.com/gal...m-kf-rom-kk-v1-1-18-04-2015-sm-g850m-t3086594
CM for 850F works on other 850?
Probably not as they have different radio's and frequencies, I wouldn't try it. Still trying to get someone to share the slim rom for 850M.
newaje said:
Probably not as they have different radio's and frequencies, I wouldn't try it. Still trying to get someone to share the slim rom for 850M.
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It works! http://forum.xda-developers.com/galaxy-alpha/general/unified-exynos-g850f-m-thread-t3515138

SM-G965F/DS on MetroPCS

What is the best way to try to get working Wi-Fi Calling and VoLte on this model phone? Just ordered it yesterday so I don't have it yet
Thanks
I am not a developer but experienced user.
There is MUCH confusion about VOLTE .
To get VOLTE in the past on 99% of phones you needed 2 Things .
1] A VOLTE capable phone .
2] Network SOFTWARE on that phone to enable VOLTE ( and often WIFI calling ). This means you only get VOLTE on Tmobile , for example with a Tmobile BRANDED [ or Metro OCS phone ] with the preinstalled software from the Manufacturer for that specific NETWORK.
Android was supposedly going to ADD this into their system but I don't think it's possible technically or legally.
A friend as recently as a week ago on SPRINT had an S9 with a VOLTE On/OFF setting and when he engaged VOLTE is affected call quality negatively - I heard it.
This is one of the reasons Sprint is merging with TMO , IMO.
I have heard rumors of 'generic ' or AT&T Iphones having VOLTE on Metro PCS/Tmobile for example but real VOLTE stays on LTE always and you never lose Internet due to a call - simultaneous STABLE voice and data is the benefit - not some little trick on /off thing.
If the F/DS is an Exynos you may have issues however someone pointed out in another thread that the Exynos should work with T-Mo WiFi calling.
I am using the firmware for the 965U1, it is generic software for US Based Snapdragon phones. When I flashed and put my SIM in, it detected T-Mobile and set up WiFi calling automagically. The VoLTE also works with no adjustments or settings.
So I am thinking at a minimum you should be able to get WiFi calling. Hopefully.
Scott said:
If the F/DS is an Exynos you may have issues however someone pointed out in another thread that the Exynos should work with T-Mo WiFi calling.
I am using the firmware for the 965U1, it is generic software for US Based Snapdragon phones. When I flashed and put my SIM in, it detected T-Mobile and set up WiFi calling automagically. The VoLTE also works with no adjustments or settings.
So I am thinking at a minimum you should be able to get WiFi calling. Hopefully.
Click to expand...
Click to collapse
Can you link the other thread? I plan on buying Samsung Galaxy S9 Plus (SM-G965F/DS) for use with T-Mobile US
How was your experience with stock?

Getting WIFI calling from TMUS on the S9+ SM-G965F/DS

Hello - I've been trying to research how I can get Wifi calling enabled on my 965F but I get all kinds of twisted up with all the different model numbers and lingo of flashing ROM's so I'm hoping something might be willing to point me in the right direction. I have a brand new S9+ 965F model with the Exynos processor on T-Mobile US. The Wifi calling option is missing which I did not expect but after reading is not unusual. I keep reading about needing to flash a particular ROM in order for it to be enabled - something about XEU or U1 perhaps? I'm of course a bit worried about turning the phone into a brick but I'm willing to take a reasonable risk to get Wifi calling unlocked.
Can anyone help? I would really appreciate it!
I have an ATT one with snapdragon, looking for the same, enable WIFI calling mine is a G9650
Same issue
Hey Mate,
Have you find a solution for your problem? Got the same issue with my G965f/DS. Moved to US and Wifi Calling wont work on TM and ATT. I've even tested on smaller providers and still same problem. I travel a lot and need Wifi Calling when I'm abroad.
Please, let me know if you guys have any solution for this problem.
Thank you,
Unfortunately I ended up returning the phone. After hours of digging the bottom line I believe is that there is no carrier profile for US carriers in this version of the phone and then I think the next issue is it doesn't support the proper bands. I ended up getting the OnePlus 6T instead.
I read flashing a ROM from a country with VoLTE and Wifi calling enabled, lets you see the settings.
I have an s9+ from UAE and I'm waiting for Pie release on INS ROM (India) to flash it and see if it works in my country (Argentina)
Sent from S.G. S9+ Duos
I'm in the same boat, no knowledge of if or when WiFi calling will be available for unlocked phones. Just a shame that such an important feature that worked on my old iPhone 6 isn't available in a supposed "flagship" product. That's just really shoddy workmanship.

VoLTE support for the LG G5 US Unlocked model (RS988)

With the impending 3G network shutdowns by AT&T (on Feburary 2022) and T-Mobile (already done in January 2021; Sprint network will in Janurary 2022), I'm badly in need of another option. My current LG Nexus 5 (International version) won't enable me to survive these shutdowns, as it lacks the full LTE band support for the United States carriers.
After searching for another phone model with the criteria of removable battery, USB-C and unlockable bootloader, I settled on the following listing for a LG G5 (RS988): https://www.ebay.com/itm/LG-G5-RS98...M-Unlocked-Smartphone-8-10-18174/164707426461
The main thing I care about here is whether I can get VoLTE support at all, so that I can continue receiving cellular service beyond 2021. I currently use Cricket, an MVNO which uses AT&T as its network. Unfortunately, AT&T has a whitelist of devices that are allowed to use VoLTE on their network: https://www.att.com/ecms/dam/att/consumer/help/pdf/Devices-Working-on-ATT-Network.pdf. They do list the AT&T version of the LG G5 (H820), but it is bootloader locked. If I cannot use get this phone to work on AT&T, I will have no choice but to switch to T-Mobile or an MVNO using its network, such as MetroPCS. They have already shutdown their main 3G network, and also require VoLTE, but at least they don't have a whitelist that only allows me to use certain devices.
Looking at the custom ROMs, including LineageOS, it seems that none of them have VoLTE support, which is critical for me if I decide to switch to T-Mobile or one of their MNVOs. I could also see if there are any ROMs based on the stock ROM. If all else fails, I can resort to using the stock ROM/OS and then root it. However, this opens up another problem: I cannot tell if there exists a stock Android 8.1 Oreo ROM for the RS988; everything I read so far seems to indicate that I will only get up to Android 7.1 Nougat on this particular model.
As I have accepted an offer for $55 down from $64.99 in the above listing, and cannot decline to buy it, changing to another phone model is no longer an option for me in terms of keeping my cellular service working. Since I will be stuck with this RS988 for the next few years, can someone tell me what is the current situation about VoLTE support, whether for AT&T or T-Mobile, and which ROM I should stick on to gain this support? Losing my cellular service in 2022 is not going to end well for me if it does happen.
Worldblender said:
I will have no choice but to switch to T-Mobile or an MVNO using its network, such as MetroPCS. They have already shutdown their main 3G network, and also require VoLTE, but at least they don't have a whitelist that only allows me to use certain devices.
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DONT use MetroPCS I was with 'em for years but they have changed there policy's not like now. Simplemobile costs the same...
Worldblender said:
Looking at the custom ROMs, including LineageOS, it seems that none of them have VoLTE support, which is critical for me if I decide to switch to T-Mobile or one of their MNVOs. I could also see if there are any ROMs based on the stock ROM.
Click to expand...
Click to collapse
I'm up against the same VoLTE wall (had a Blackberry Passport 4 years) and right now only finding VoLTE in Nougat ROM... TBH, I don't want Oreo b/c of that "A-B parition" buisness
Worldblender said:
Losing my cellular service in 2022 is not going to end well for me if it does happen.
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I feel ya bro, right now I'm on a "burner" (LG-Stylo, for big screen) due to this concern. Did you ever find a ROM for RS988 with VoLTE?
virginwidow said:
I feel ya bro, right now I'm on a "burner" (LG-Stylo, for big screen) due to this concern. Did you ever find a ROM for RS988 with VoLTE?
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You came in a tad too late; by now, I ended up getting an entirely newer phone, a Motorola Moto G Power (2020) via Google Fi bill credit. Though its battery is not meant to be user-replaceable, at least it has support for VoLTE out of the box, which is what I care about more.

Question Locked AT&T S23U vs Unlocked S23U

Since the Galaxy S6 Edge days I've been getting AT&T branded Samsung phones. This time around due to initial perks of a trade in were better for the unlocked version of S23U, I went ahead and pre-ordered the unlocked version. Are there any drawbacks anyone has experienced with the unlocked version that would warrant me to cancel the order? Are there any AT&T features such as visual voicemail, personal hotspot or HD voice that isn't compatible with the unlocked, non carrier version? Any help would be appreciated as i believe I can still cancel the order.
Thank you.
With an unlocked phone, you cant call. But if you add a sim card into it you can do anything such as mobile data, call, hotspot, etc. An unlocked phone can work on any carrier. But it is still the same thing as an at&t version unless you add the sim card in it.
So I assumed if i insert my AT&T simcard it'll work just like an AT&T phone?
AeroSatan said:
So I assumed if i insert my AT&T simcard it'll work just like an AT&T phone?
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That's what I have done for every phone I have had since the S7 Edge on T-Mobile. Still using the same simcard since I started out with the (S7 Edge), then Note 8, S20U, S22U and now S23U and has worked fine with T-Mobile but without the carrier bloat. The only downside is Unlocked versions always get the updates last.
You can always flash U (carrier firmware) that is bit different from from U1 (factory unlocked) firmware. This way you'll get exactly the same experience as for the phone of any carrier directly. You can always switch back and forth with data wipe.
AeroSatan said:
So I assumed if i insert my AT&T simcard it'll work just like an AT&T phone?
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Click to collapse
yes. and sorry for the late reply.
irshansk said:
You can always flash U (carrier firmware) that is bit different from from U1 (factory unlocked) firmware. This way you'll get exactly the same experience as for the phone of any carrier directly. You can always switch back and forth with data wipe.
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First time Sammy user here, so possibly a stupid question but... from my search it appears that other than carrier bloatware you don't loose anything by going to U1 firmware and possibly gain faster updates. Is that a correct? Seems to be the case for WiFi calling but what about ATT wifi hotspots for example?
Unlocked phones were useful for sticking local SIMs in them for international travel but with the new international plans pricing is actually reasonable so it is not worth the hassle.
AeroSatan said:
Since the Galaxy S6 Edge days I've been getting AT&T branded Samsung phones. This time around due to initial perks of a trade in were better for the unlocked version of S23U, I went ahead and pre-ordered the unlocked version. Are there any drawbacks anyone has experienced with the unlocked version that would warrant me to cancel the order? Are there any AT&T features such as visual voicemail, personal hotspot or HD voice that isn't compatible with the unlocked, non carrier version? Any help would be appreciated as i believe I can still cancel the order.
Thank you.
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Click to collapse
I was in the same situation as you, and ordered the Unlocked version this time instead of the AT&T version. I am happy to report that everything is working. Visual Voicemail (Samsungs App), Personal Hotspot (aka Mobile Hotspot), HD Voice (VoLTE), and WiFi Calling.

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