How to get carrier config working? - Samsung Galaxy S10 Questions & Answers

Just got mine today, How does one enable carrier config? I got the U1 model and I assumed just like my S9 flashing the carrier U model and changing sims would result in getting the bloatware for whichever sim inserted but after flashing a regular U firmware its still XAA . Carrier bloat from flashing userdata is there, but CDMA calling doesnt work on Verizon only over VoLTE which is the reason I'm doing this. A lot of areas LTE is spotty and phones wil drop to 1X/CDMA 3G and the U1 firmware is not allowing CDMA calls. Which U1 firmware on my S9 wouldnt make calls over CDMA either until I flashed the normal U firmware.
Thanks!

Related

[Q] Would Flashing US Cellular Note 9 to Verizon Firmware Add Verizon CDMA/LTE Bands?

We finally made the switch to Verizon back on Monday due to inconsistencies with US Cellular's local coverage in our area. Inconveniently, I had just upgraded to the USCC variant of the Note 9 in early September, so when the Verizon agent initially tried to change the phone over, I was informed that it was the outstanding balance that prevented him from doing so (which made sense at the time). Under the impression that this was all that would be required, I just zoomed over to the US Cellular store next door to pay off that $800 or so remaining on the line, thinking I was in the clear. Of course, it would only be after this that the agent finally realized that compatibility wasn't quite as clear-cut as they had initially thought...
So I apologize in advance for what I feel may be a stupid question, but I haven't been able to find a solid answer on this:
I (now) know that the US carrier-specific models of the Note 9 tend to only come preloaded with the CDMA/LTE frequency bands they use in their respective networks, and that while there is some overlap and crossover, just swapping out one carrier's SIM for that of another still limits you to the original spectrums that came on the phone. However — will the process of flashing the firmware to the correct corresponding carrier for the new SIM also change the frequency bands so everything matches up, or is this something that's entirely hardware related that can't be bypassed?
And to avoid anyone breaking things if this does turn out to be a feasible option, I would assume this would still only work for those in my situation, i.e. trying to flash from an already comparable CDMA capable version of the phone to another CDMA capable version with otherwise equivalent hardware specs and processor (so no GSM-only to CDMA, no Snapdragon to Exynos, etc.).
As has been discussed many times here...ALL the US Note 9s are identical. Same exact hardware. They all support the same bands. The only difference is firmware. And actually with Pie, they will all run the same firmware, just like the Note 8.
You have two options:
1. Carrier branded firmware which will keep WiFi calling and VOLTE working.
2. Unbranded U1 firmware, which is a clean bloat free firmware, but no Wifi calling or VoLTE (unless you're on T-Mobile)
To change firmware, download thr most recent firmware of your choice using the SamFirm tool. Then flash it with patched ODIN 3.13.1. This will wipe your device, so make a backup.

Unlocked S10 on T-Mobile - What works and what doesn't?

Would like to know if anyone has confirmed what all works, and what doesn't when using tmobile's network on the unlocked s10.
I've heard things like 4x4 MIMO , VOLTE, carrier aggregation, etc may not work.. Also supposedly slower updates... But if someone can confirm this.
Also, would flashing tmobile's firmware onto the unlocked s10 enable all network features I would get on the tmobile model???
Thanks!
I am pretty sure the only missing item is T-mobile video calling in built-in phone dialer when you use unlocked US snapdragon variant(still bootloader locked) on T-mobile. WiFi calling, VoLTE, 4x4 MIMO, CA works just fine. Yes you can flash T-mobile's firmware if you want video calling (and bloat).
VICosPhi said:
I am pretty sure the only missing item is T-mobile video calling in built-in phone dialer when you use unlocked US snapdragon variant(still bootloader locked) on T-mobile. WiFi calling, VoLTE, 4x4 MIMO, CA works just fine. Yes you can flash T-mobile's firmware if you want video calling (and bloat).
Click to expand...
Click to collapse
Could you provide some basis on where you got this information? If you have some solid confirmation that would be great.
I have S9+ unlocked and this applies to it, so I am pretty sure the same will be the case for S10+.
Low_Key_Slaps said:
Could you provide some basis on where you got this information? If you have some solid confirmation that would be great.
Click to expand...
Click to collapse
Samsung has a compatibility table on their site, and it can corroborate part of VICosPhi's post. The bit about MIMO and CA (up to 5 or 7) is not written explicitly. Unofficially you will achieve these, however.
The phone also supports ALL LTE bands for T Mobile (minus 2 rare ones). 2, 4, 5, 12, LAA, 66, and 71. By flashing the TMO CP I think others restored RCS and video call, haven't really looked into it.
VICosPhi said:
I have S9+ unlocked and this applies to it, so I am pretty sure the same will be the case for S10+.
Click to expand...
Click to collapse
Yes. This is true from S8 onward.
This has beem covered before in this forum.
Radio-wise, side by side, 970U1 reception is not as robust as 970U firmware. YMMV per local radio deployment but it's pretty obvious here where I am (Alexandria VA, DC. metro). I have several 970U1 (Best Buy), but have flashed all of them with 970U because I prefer full T-mo functions and better reception. There's not that many TMo bloatware, and all can easily be disabled with PDP or AH3.
lost_ said:
This has beem covered before in this forum.
Radio-wise, side by side, 970U1 reception is not as robust as 970U firmware. YMMV per local radio deployment but it's pretty obvious here where I am (Alexandria VA, DC. metro). I have several 970U1 (Best Buy), but have flashed all of them with 970U because I prefer full T-mo functions and better reception. There's not that many TMo bloatware, and all can easily be disabled with PDP or AH3.
Click to expand...
Click to collapse
1) Did you flash full firmware(including USERDATA file)?
2) Also did you use CSC or HOME CSC?
3) Have you used regular/standard Odin or Patched 3B?
The reason for my questions is that I flashed my unlocked S10e with T-Mo firmware, but it didn't matter is I flashed userdata file and csc or home csc, there was no T-Mo bloatware. I do know that firmware did flash properly, as the phone did get built-in video calling, T-Mo RSC(advanced messaging), 4G LTE signal logo(didn't see T-Mobile Digits in the settings though)
remote rooting
Its posible to get remote rooting for a price..??? on galaxy s10 t-mobil version
laver23 said:
Its posible to get remote rooting for a price..??? on galaxy s10 t-mobil version
Click to expand...
Click to collapse
Yep, just go it done the other day for like 30 bucks. send me a message i will give you details.
remote rooting
galaxydreamer702 said:
Yep, just go it done the other day for like 30 bucks. send me a message i will give you details.
Click to expand...
Click to collapse
tell me the best time to get in contact, if you are available now ,just letme know it
scam!!!!
hello ,the person that you pointed me to get in contact with,,,Android Doctor after cahrged me the 29.98 dollars
after got the payment go on silence,,its really not fair...
Charkatak said:
1) Did you flash full firmware(including USERDATA file)?
2) Also did you use CSC or HOME CSC?
3) Have you used regular/standard Odin or Patched 3B?
The reason for my questions is that I flashed my unlocked S10e with T-Mo firmware, but it didn't matter is I flashed userdata file and csc or home csc, there was no T-Mo bloatware. I do know that firmware did flash properly, as the phone did get built-in video calling, T-Mo RSC(advanced messaging), 4G LTE signal logo(didn't see T-Mobile Digits in the settings though)
Click to expand...
Click to collapse
Were you able to activate the caller ID and spam protection feature in call settings?
tyrone1 said:
Were you able to activate the caller ID and spam protection feature in call settings?
Click to expand...
Click to collapse
When I go to phone app/dialer, there is no setting for Caller ID or Spam Protection. T-Mobile's Visual Voice Mail app has a setting to enable "Enhanced Caller Information" and I did enable it in the settings. My phone does show if it is a spam call or like today, it showed a call as "verified" when someone was calling me. I did check T-Mobile branded phone in the store and settings are the same as on my phone. There were no extra options that my phone was missing. Also as you may already know T-Mobile's S10 devices don't have "Multi-Line" settings which would support Digits option in the phone's dialer app and also no VVM that is built into the dialer as well. T-Mobile/Samsung might/might not bring these features in the future update
Charkatak said:
When I go to phone app/dialer, there is no setting for Caller ID or Spam Protection. T-Mobile's Visual Voice Mail app has a setting to enable "Enhanced Caller Information" and I did enable it in the settings. My phone does show if it is a spam call or like today, it showed a call as "verified" when someone was calling me. I did check T-Mobile branded phone in the store and settings are the same as on my phone. There were no extra options that my phone was missing. Also as you may already know T-Mobile's S10 devices don't have "Multi-Line" settings which would support Digits option in the phone's dialer app and also no VVM that is built into the dialer as well. T-Mobile/Samsung might/might not bring these features in the future update
Click to expand...
Click to collapse
Darn that caller id feature is only available in the u1 firmware. But at the same time the u1 firmware doesn't support hd voice.
tyrone1 said:
Darn that caller id feature is only available in the u1 firmware. But at the same time the u1 firmware doesn't support hd voice.
Click to expand...
Click to collapse
Before flashing my unlocked S10e, there was a setting in the dialer about caller id info. Carriers possibly remove these features as they do offer their own. For example when I access my T-Mobile account settings online, there is a toggle for some spam protection. The caller ID was or is paid service. As for the HD voice, I think unlocked U1 firmware has it, but just doesn't advertise it during call as T-Mobile firmware does. For example U1 firmware shows LTE and LTE+ on the status bar, but T-Mo firmware shows 4G LTE sign, but they both get same speed and connected to the same network. I remember there was a dial code that would show as some voice codecs that handset supported, something like *#0011#, *#1234#. Haven't played with those for a while as I was using Pixel phone
Charkatak said:
Before flashing my unlocked S10e, there was a setting in the dialer about caller id info. Carriers possibly remove these features as they do offer their own. For example when I access my T-Mobile account settings online, there is a toggle for some spam protection. The caller ID was or is paid service. As for the HD voice, I think unlocked U1 firmware has it, but just doesn't advertise it during call as T-Mobile firmware does. For example U1 firmware shows LTE and LTE+ on the status bar, but T-Mo firmware shows 4G LTE sign, but they both get same speed and connected to the same network. I remember there was a dial code that would show as some voice codecs that handset supported, something like *#0011#, *#1234#. Haven't played with those for a while as I was using Pixel phone
Click to expand...
Click to collapse
Thanks for the information..
The caller ID and spam protection is the smart call feature built in the phone. It's like free caller ID. Different than the one you talking about.
Definitely not hd voice I compare side by side my s10e exynos voice quality.
Wondering if possible to flash u1 firmware but flash userdata from tmobile? Or even TMobile baseband.
Edit so I was able to flash the latest U baseband on my u1 firmware. I was actually able to change the csc too in the phone using the *#272*imei# code to xaa/xxa/tmb and it stuck. But after I rebooted once I can't replicate that and it always goes back to tmb/tmb/tmb because of my t mobile sim card.
When I was in xaa/xaa/tmb I could see the volte toggle was on. Still didn't show the HD voice icon while in call.
tyrone1 said:
Thanks for the information..
The caller ID and spam protection is the smart call feature built in the phone. It's like free caller ID. Different than the one you talking about.
Definitely not hd voice I compare side by side my s10e exynos voice quality.
Wondering if possible to flash u1 firmware but flash userdata from tmobile? Or even TMobile baseband.
Edit so I was able to flash the latest U baseband on my u1 firmware. I was actually able to change the csc too in the phone using the *#272*imei# code to xaa/xxa/tmb and it stuck. But after I rebooted once I can't replicate that and it always goes back to tmb/tmb/tmb because of my t mobile sim card.
When I was in xaa/xaa/tmb I could see the volte toggle was on. Still didn't show the HD voice icon while in call.
Click to expand...
Click to collapse
So my S10e at the moment is TMB/TMB/XAA. It shows HD+ icon during calls. You won't find VoLTE toggle (as on U1 XAA firmware), but VoLTE is always on in T-Mobile firmware
Charkatak said:
So my S10e at the moment is TMB/TMB/XAA. It shows HD+ icon during calls. You won't find VoLTE toggle (as on U1 XAA firmware), but VoLTE is always on in T-Mobile firmware
Click to expand...
Click to collapse
So on the u1 firmware you get volte toggle?
Can you change your phone to xaa/xaa/xaa with a tmobole sim card in it?
tyrone1 said:
So on the u1 firmware you get volte toggle?
Can you change your phone to xaa/xaa/xaa with a tmobole sim card in it?
Click to expand...
Click to collapse
Yes, U1 firmware had the toggle, but T-MO firmware doesn't, but I do know that VoLTE is always on.
Before I put my sim card into the U1 phone, it was XAA, but when you put T-Mo sim card, the phone gets some carrier info and restarts. After that it becomes TMB/TMB/XAA even without flashing. If I wouldn't flash my phone with U firmware the Video calling, T-Mobile boot logo, HD+ voice icon and 4G LTE icon, Advanced Messaging(T-Mobile's proprietary RCS) won't be present with standard U1 firmware
Charkatak said:
Yes, U1 firmware had the toggle, but T-MO firmware doesn't, but I do know that VoLTE is always on.
Before I put my sim card into the U1 phone, it was XAA, but when you put T-Mo sim card, the phone gets some carrier info and restarts. After that it becomes TMB/TMB/XAA even without flashing. If I wouldn't flash my phone with U firmware the Video calling, T-Mobile boot logo, HD+ voice icon and 4G LTE icon, Advanced Messaging(T-Mobile's proprietary RCS) won't be present with standard U1 firmware
Click to expand...
Click to collapse
Is there a way to get xaa/xaa/tmb with a TMobile sim card in it?

T-Mobile to Verizon Wifi Calling

Hello all,
I have a T-Mobile variant of the S10. I desperately need wifi calling and the option is not there since I switched to Verizon (same T-Mobile variant S10). I'm assuming this is a software limitation and I need the Verizon bloatware. Anybody know if flashing Verizon will work? I'm assuming I just use Odin and the stock rom. Been awhile since I've messed with all this stuff. Is there a good tutorial to look at? Thanks for any help!
Flashing the Verizon firmware will probably do it, if it has wifi calling. I know the AT&T firmware has wifi calling because I am on it. You have to have a snapdragon though, flashing to an exynos variant won't work.

US Note 9 Carrier-Specific vs. US Unlocked Firmware Observations & Theories

Observations:
For any particular build generation:
1. Between the U and U1, none of the firmware files are the same, not AP, BL, CP or CSC.
2. Between the U firmwares, only the USERDATA changes. The others have the same name and SHA-512.
3. Between the U1 firmwares, ALL of the files have the same and SHA-512. This indicates SamMobile's different zip files for XAA, VZW, TMB, TMK, etc. are an "exercise". U1s are sold by non-carrier outlets who have no idea where the phone will be used.
4. Flash file size differences between the U and U1 are as follows:
AP - The Unlocked U1 flash is more than a gig larger than for the carrier U flash.
BL - They are very close to same size with the carrier version being 41K larger.
CP - They are very close to the same size with the carrier version being 327K larger.
CSC - The carrier U flash is about 20 megs larger than the Unlocked U1.
USERDATA - T-Mobile is 1.35 GB, Verizon: 1.76 GB. The US UNLOCKED U1 doesn't have a USERDATA flash file.
My Theory:
There are many theories swirling about that center on carriers restricting services when you don't buy your phone from them. My theory is much simpler. With all of the U carrier firmware, you will see a gig plus USERDATA flash file. The U1's firmware doesn't have a USERDATA flash file, but the U1's AP flash file is a gig plus larger than U's AP flash file. I also work in the UNIX world. Applications that are installed at the same time you install the operating system will be installed in the operating system area. If you install those same apps later, they will be installed in the user software area. My theory about the Note 9's firmware is that the U1 Firmware is Android+Samsung-specific software+Samsung specific hardware drivers+standards-based wireless network drivers+Samsung basic apps. Samsung gives wireless providers the same with standards-based wireless network drivers+Samsung basic apps in separate install. This could explain how the gig plus moved from the U1's APP to the U's USERDATA. It would also enable a consistent user interface for the same service across all wireless providers who may be providing the service using entirely different methods. This would explain why running the carrier-specific the U firmware vendors all support capabilities such as Wi-Fi calling and Video Calling, while when the same phones are running US Unlocked firmware, only some do. That would mean those with the services available have deployed them in a standards-compliant way. For instanced, for T-Mobile, Voice over LTE(VoLTE) and Voice over Wi-Fi(VoWiFi) work but USCC roaming doesn't. On Verizon, Voice over LTE(VoLTE) and Carrier Aggregation works, but NOT Voice over Wi-Fi(VoWiFi). With AT&T, neither work. So that likely means the Verizon does not support VoWiFi on their network while AT&T doesn't support VoLTE nor VoWiFi, and have proprietary implementations on their network that are only available if your flash their carrier-specific firmware. This would also explain why when a phone is running the US Unlocked U1 software with a Verizon SIM installed you will not have Wi-Fi calling available, and when you simply swap to the T-Mobile SIM, it will magically show up. This seems to me to simply be the U1 firmware responding to what it finds. It hasn't been that long since our phones would only work on one network. It hasn't been that long since the critical mass existed to migrate to the new LTE standard. The T-Mobile build-out only increased rapidly, and Sprint may not even be finished rolling out VoLTE yet, thus much less likely to have non-compliant systems in place. You could extend this reasoning to other wireless technologies as well. It also makes sense why the mechanism to prevent firmware upgrades to not be present in the U carrier-specific firmware, while it is present in the the standards-compliant U1 firmware. The U1 path adds support for new standards as it goes. The U path must replace proprietary methods for advantage or regulatory reasons. If this theory is correct, you would be better off with U1 firmware when traveling abroad. The name US Unlocked may have little to do with US, and a lot more to do with being standards-based, which is more likely what you would encounter in other countries where widespread deployment occurred later. The SM-N960U* already supports more bands than any phone I've found, and with US Unlocked U1 firmware, it may be the best world phone as well.
Why I believe this:
In an environment of democracy and capitalism, companies are free to make decisions that benefit themselves the most, and those who are stockholders appoint CEOs who know how to make that happen. They would get fired for not using other people's equipment and networks for free if they could. If they could make more money by getting rid of non-VoLTE devices to free up bands, they will, and the FCC is forcing it to happen. The fact that VoLTE is not controllable by the user interface, does not indicate it is not being used. Why would you give a user the option control VoLTE, Carrier Aggregation, etc.? Voice Over Wi-Fi VoWiFi employs SIP/VOIP technology, which predates smart phones. Towers and equipment are often not owned by the wireless providers because they are co-location sites that must be approved by local authorities. Standards-based equipment means it would be cheaper, you need less of it, you have more options with regard to inter-carrier agreements of which some are mandated by the FCC. Moreover, investments in non-standard methods and equipment devalues the company, and even determines how much they can leverage money. Holding out on people who do not buy their phones from them doesn't make sense because they are not denying these services to BYOD pre-pay users, or anyone who flashes their phones to their firmware. The FCC already forces them to unlock their phones before they are paid for, so it doesn't make sense to put themselves at a competitive disadvantage when it comes to acquiring users from other carriers. If carrier salesmen posts are true, they don't make much on phones anyway, and phones are more a vehicle to sell their services and accessories. They know that you know they don't have you over a barrel anymore and implementing interoperability is their new reality, and the reality of any maturing technology.
Surprises and Mysteries:
After I paid my premium membership for a month and went to SamMobile to download US Unlocked U1 firmware, I was surprised to find files for all different wireless network providers. Puzzled, I downloaded them all. SamMobile shows TMK as USA, so believing that I was getting US Unlocked, I downloaded it and flashed it. Booting up I got the Samsung Logo, which also made sense. I learned later that SamMobile has things mislabeled. TMK is MetroPCS, and XAA is the US Unlocked I should have flashed. However, then I noticed after the U1 files were unzipped that the flash files all had the same name. Then I tested their SHA-512 numbers and they were exactly the same, which means they are the same files. So, if they are the same files, why do they list the different wireless providers and put them in separate zip files with the carrier's extension on them? There isn't even an expectation of a difference because when they sell a U1 phone, they don't know which network it will be used on. What I do know is the Phone INFO app shows:
Firmware's CSC Code: XAA (I never flashed the XAA zip file. I flashed the TMK zip file, but since I found the flash files were the same for every U1 firmware zip file, seeing the US Unlocked code of XAA was not shocking.)
Active CSC Code: VZW (SIM installed)
Future
Great discussion .... Thanks
I've been down several roads with this including an S9 Exynos and then an S10
I then tried a One Plus 7 Pro and even switched to TMO because I couldn't get WiFi Calling with AT&T.
Currently am experimenting with a Note 9 that I believe was original sim locked to At&T but now unlocked and now with the most recent U1 firmware
Calling features work fine with TMO including WiFi Calling, but I'm looking to try AT&T as well (my reception is much better in my rural areas with att vs TMO).
Do you know if the calling features will work with the U1 firmware and ATT? ( If I get IMEI compatibility issues squared away with att)
Or do I have to flash U firmware?
I'm awaiting a Note 10 that is unlocked. Wondering if I can get ATT calling features to work on it?
jcrompton said:
Do you know if the calling features will work with the U1 firmware and ATT? ( If I get IMEI compatibility issues squared away with att) Or do I have to flash U firmware? I'm awaiting a Note 10 that is unlocked. Wondering if I can get ATT calling features to work on it?
Click to expand...
Click to collapse
I do not use AT&T. From what I've read, is no advanced features work with U1 on AT&T. With Verizon, VoLTE and Carrier Aggregation works fine, but ViLTE and VoWiFi does not.
I live in a T-Mobile fringe area that uses B71 exclusively (at least at my house). My experience with U vs U1 is that even though the signal is relatively weak, -118 dBm, the T-mobile branded U firmware holds the LTE signal fine. On the unlocked U1 firmware the signal is a tad weaker, plus it will drop the signal entirely and give me a no network error and/or it will roam on AT&T hspa. So clearly the Tmo software has optimizations for B71 at least over the unlocked U1.
I also have used a Pixel 3XL, an iPhone XR and a Moto G7 power in the same area. They do occasionally roam but I don't experience the loss of signal that I get with the Note 9 and the unlocked firmware.
BladeRunner said:
I live in a T-Mobile fringe area that uses B71 exclusively (at least at my house). My experience with U vs U1 is that even though the signal is relatively weak, -118 dBm, the T-mobile branded U firmware holds the LTE signal fine. On the unlocked U1 firmware the signal is a tad weaker, plus it will drop the signal entirely and give me a no network error and/or it will roam on AT&T hspa. So clearly the Tmo software has optimizations for B71 at least over the unlocked U1. I also have used a Pixel 3XL, an iPhone XR and a Moto G7 power in the same area. They do occasionally roam but I don't experience the loss of signal that I get with the Note 9 and the unlocked firmware.
Click to expand...
Click to collapse
This is very valuable information for a guy on the fence like me.
Thanks TONS!!!
BladeRunner said:
I live in a T-Mobile fringe area that uses B71 exclusively (at least at my house). My experience with U vs U1 is that even though the signal is relatively weak, -118 dBm, the T-mobile branded U firmware holds the LTE signal fine. On the unlocked U1 firmware the signal is a tad weaker, plus it will drop the signal entirely and give me a no network error and/or it will roam on AT&T hspa. So clearly the Tmo software has optimizations for B71 at least over the unlocked U1.
I also have used a Pixel 3XL, an iPhone XR and a Moto G7 power in the same area. They do occasionally roam but I don't experience the loss of signal that I get with the Note 9 and the unlocked firmware.
Click to expand...
Click to collapse
on U1 firmware, when you go to the phones dialer and dial:
*#2263#
do you get a hidden service mode menu like attached picture? if so then just force band 71 so that it dosen't switch. you can also disable other bands and leave only the ones you know work best so that device dosent try to switch to other weaker ones that you know will drop. also by setting to forcefully stay on LTE by selecting menu 4 in band selection and specifying the bands it should stop from reverting to hspa. but also might cause no signal. but again by selecting only the bands you know work i believe it should help. i have done many tests and what i do is to force bands one by one and check strength in a place where i know signal is poor. this way you weed out the bad bands. write it down somewhere and then go reactiavte all of them. then go to the disable band menu and remove everything except the ones listed previously and be left with only the stronger ones and stop fone from attempting to connect to random weaker ones.

Question U1 firmware and U HOME_CSC

I notice that with AT&T phones, there are posts about flashing HOME_CSC for AT&T to U1 firmware to enable AT&T functions. Is this just for AT&T, since they don't make their U firmware publicly available? I was wondering how well it worked and if it worked on other firmwares. In my case, I use Xfinity, and either I can have U1 firmware with it's superior call screening but visual voicemail that doesn't work right, or flash the U firmware and get voicemail working and lose the call screening of the U1 firmware, and I was wondering if I could somehow get both working. I've also noticed that Xfinity started updating their voicemail app again that I could use, but from what I remember about that app a few years back, it was incredibly slow, and it also changes the voice mail box in a way that prevents the normal Voicemail app from working at all.
I ended up flashing my unlocked U1 with the ATT software since I had switched from Tmobile to ATT, and everything works correctly, the visual voicemail, wifi calling and I liked the looks of ATT data icons better, and I still get OTA updates.
I have an unlocked ATT device which I am using overseas, do you know if I can flash a U1 firmware to be able to get OTA updates to this device? Currently I'm not getting any.....

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