After using an Unlocked S8 U1 on AT&T for the past few years, I decided to get the S9+ (since I don't care for the S10).
I order two S9+ (renewed) from Amazon: the AT&T S9+ model (G965U) and the Unlocked Model (G965U1), since I wanted to see if VoLTE and WiFi Calling would work on my Pre-Paid plan.
The AT&T G965U does work fine with VoLTE and WiFi Calling, but the unit has some nasty fall marks on it, and the volume buttons don't work well, so it's going back.
The Unlocked G965U1 only has a few minor screen scratches, but overall is in better condition than the AT&T G965U, but VoLTE and WiFi Calling doesn't work.
So I'm not sure what to do.
I can clearly hear the difference in Call Quality between the model with VoLTE and without (HSPA calls).
It's too bad AT&T still won't allow VoLTE on non-AT&T Branded Samsung phones.
I have read countless posts on S9/S9+ Firmware and CSC flashing with ODIN (which I'm familiar using) but I can't find a definite answer on if there's way to take an Unlocked S9+ U1 and flash it so that VoLTE will work. I know WiFi Calling won't work, since the IMEI has to be on AT&T Whitelist.
As of right now, the S9+ is on the latest firmware G965U1UEU7CSJ3.
Just to give an update. I was able to flash the S9 Plus G965U1 Unlocked model with the AT&T CSI5 firmware as shown in the Guides section. After that, the S9+ was able to use VoLTE and WiFI Calling on my AT&T Prepaid plan.
I had also ordered a (used/renewed) Note 9, and when I got it, it had Verizon firmware on it. So with it I had to flash the Note 9 first to the U1 Unlocked firmware and then to the AT&T U firmware.
So with both the S9+ and Note 9, I can get VoLTE and WiFi Calling to work.
Now I just have to decide which one I want to keep, as the S9+ was $348 and the Note 9 was $390.
I like the S9+ since it's not as heavy and more comfortable to hold, and it seems like the (smaller 3500mAh) battery lasts longer (not sure why). But I like the features of the Note 9 (S Pen) since I had the Note 2/3/4/5 years ago and miss those features.
I have an unlocked S9 and am on AT&T Prepaid.
I am playing a video about Odin right now.
Related
Guys, my cousin got me a new brand sprint s8+, unlocked of course and I'm from Tunisia.
However I've got some questions about it:
I'm using Tunisia's carrier mi Sim not Sprint, but I've noticed that 4G is not perfect as it should be, had A7 2017 before and the 4G in the A7 worked perfectly, but in s8+, sometimes I strugle with the 4G and it says on top, "LTE" not 4G like the one in A7, wondering why ? maybe cause I'm not using sprint carrier ?
I wanted to instal a stock firmware of s8+, the international stock one not sprint firmware, is it possible ? cause some applications and some service are from sprint that I'm not using them and useless to me that take up my the RAM memory and even drains battery, so where to get that firmware and is it possible to instal it in my phone ? g955u model
Thanks
Pros/Cons?
Pro: No AT&T preinstalled bloat
I'm using an Essential PH-1 unlocked with AT&T. No problems.
Used a Mate 9 unlocked on ATT with no problem. Most US unlocked phones should work without any problems on ATT
VoLTE or HD calling as AT&T calls it might work on an unlocked phone if they will provision your line for the service. They did it for my Pixel 2 and it worked after I got a new sim. I don't think wifi calling will work on any phone except an AT&T device. I would make good use of this service so I'm opting for the AT&T version. If I find wifi calling works on an unlocked model I may switch but I don't think it will. We do some vacationing at a place with wifi but no cell service. My wife's AT&T iphone has it and it's pretty cool.
If the unlocked version is snapdragon then it will work just fine and lock to USA AT&T. With the S8 phones they were unlocked until you put a SIM in it and then it locks to that carrier. I'm curious is the unlocked version the exynos or the Snapdragon?
highaltitude said:
If the unlocked version is snapdragon then it will work just fine and lock to USA AT&T. With the S8 phones they were unlocked until you put a SIM in it and then it locks to that carrier. I'm curious is the unlocked version the exynos or the Snapdragon?
Click to expand...
Click to collapse
The snapdragon is the only processor sold in the usa whether you are unlocked or carrier specific.
Having issues with SM-G965F on AT&T LTE
I just activated my SM-G965F and I'm only getting 3G and 3.5G (H+). No LTE. If I change the mobile networks settings to nxtgenphone, it connects to LTE, then drops and I get no data. I can only use the 'phone' version. My AT&T account has a grayed out device for my account. Checking compatibility with the IMEI checker for AT&T says it cannot determine if it is compatible. the 2nd SIM slot IMEI number is considered invalid!
Heading to the AT&T store at the mall later... not expecting much help.
I have the Note 8 and it was a PITA to get it full working on AT&T. Only thing that interest me was the Volte for talking on the phone and data at the same time, never got it working 100%. Had AT&T provision with new chip still not working good, so I sold the unlocked and got an AT&T model and had it unlocked and all is working well.
Sent from my SM-G965U using Tapatalk
[Resolved] Having issues with SM-G965F on AT&T LTE
poodull said:
I just activated my SM-G965F and I'm only getting 3G and 3.5G (H+). No LTE. If I change the mobile networks settings to nxtgenphone, it connects to LTE, then drops and I get no data. I can only use the 'phone' version. My AT&T account has a grayed out device for my account. Checking compatibility with the IMEI checker for AT&T says it cannot determine if it is compatible. the 2nd SIM slot IMEI number is considered invalid!
Heading to the AT&T store at the mall later... not expecting much help.
Click to expand...
Click to collapse
It was not the APN settings, entirely. It was that myAT&T would not recognize my IMEI number as a 9+. So, working with a store clerk at the local mall, she suggested to punch in a fake(last number altered) IMEI number using the in-store SM-G965U models. Since this has nothing to do with actually logging in or SIM verification, it worked. The SIM does its job and my account has an S9 (not a plus) on it, so when I changed to the 'nxtgenphone' APN settings, it is 'allowed' to log in (that's my best guess, anyway).
There is no other reason why the SM-G965F would NOT work on AT&T LTE since it has 3 of the 4 LTE bands (band30 is not included, but is only used in new, dense environments to alleviate network congestion -- my understanding).
dmb219 said:
The snapdragon is the only processor sold in the usa whether you are unlocked or carrier specific.
Click to expand...
Click to collapse
So if I buy and ship an unlocked Galaxy S9 from Samsung website, it will have Snapdragon and not Exynos? I'm in a US territory.
I'm getting a good deal off their website with accessories and whatnot buying unlocked but I prefer Exynos
I'd rather not post and make a new thread. If someone else can confirm, I'd be much obliged
Yep it does. Just make sure it's on Snapdragon.
Wondering if anyone has had the issue where unlocked ATT S9+ can not access T-Mobile's VOLTE? data works flawlessly. T-Mobile has no Edge or wcdma in my areas calls fail. Never seen this issue on an unlocked att device before they always have worked on tmobilesVOLTE
since yesterday I've had my at&t s9+ on tmobiles network, and have full functionality. Advanced messaging, VoLTE, wifi calling and video calling all work fine. Started with at&t, unlocked, flashed g965u1 firmware, flashed back to g965u stock tmobile with home_csc and omitted userdata. haven't tried at&t on tmo before, and I guess my process was a bit convoluted but I also wanted to debloat and unbrand.
imgur.com/a/fffT7DH for screenshots of phone info showing tmb/tmb/att and radioinfo showing volte provisioned
Okay so I plan on switching to T-Mobile Within a week from now and I want to get a new phone when I switch. I want to get the international version of the S9 Plus but I'm not sure how compatible it is with the T-Mobile network. Will the international version of the S9 Plus work with the T-Mobile network? And also I want it to be able to root the phone because I know the Snapdragon version of the S9 Plus has a locked bootloader. Any advice?
ayo2001 said:
Okay so I plan on switching to T-Mobile Within a week from now and I want to get a new phone when I switch. I want to get the international version of the S9 Plus but I'm not sure how compatible it is with the T-Mobile network. Will the international version of the S9 Plus work with the T-Mobile network? And also I want it to be able to root the phone because I know the Snapdragon version of the S9 Plus has a locked bootloader. Any advice?
Click to expand...
Click to collapse
all USA model Galaxy phones with snapdragon processors have locked bootloaders. The F variant is what you want and yes, they work just fine on t-mobile. at&t too.
I was wondering if anybody is using the international T865 on T-Mobile, and if so, how is the LTE signal? I know this model doesn't have all of the T-Mobile LTE bands, but I believe it has a couple of the important ones? I ran an international Tab S2 on T-Mobile, and it worked pretty much just fine in Los Angeles. I was kind of curious how this might work now, if the network has changed since then or whatnot, and then how the merger with Sprint might affect it in the near future. Any info is appreciated!
YrrchSebor said:
I was wondering if anybody is using the international T865 on T-Mobile, and if so, how is the LTE signal? I know this model doesn't have all of the T-Mobile LTE bands, but I believe it has a couple of the important ones? I ran an international Tab S2 on T-Mobile, and it worked pretty much just fine in Los Angeles. I was kind of curious how this might work now, if the network has changed since then or whatnot, and then how the merger with Sprint might affect it in the near future. Any info is appreciated!
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Click to collapse
I attempted to flash the international T865 on my unlocked T-Mobile S6 LTE with Odin and a Patched Odin but in each case it failed.
rfb813 said:
I attempted to flash the international T865 on my unlocked T-Mobile S6 LTE with Odin and a Patched Odin but in each case it failed.
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Click to collapse
Yeah I don't think that works. Have you tried putting a smartphone sim in your T-Mobile S6? I'm sure the system will recognize it as a tablet and not a phone. That's why I want to order an 865 international model. But then again I guess I might look into how much it costs just to add some tablet data to my plan.
YrrchSebor said:
Yeah I don't think that works. Have you tried putting a smartphone sim in your T-Mobile S6? I'm sure the system will recognize it as a tablet and not a phone. That's why I want to order an 865 international model. But then again I guess I might look into how much it costs just to add some tablet data to my plan.
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Click to collapse
I have a smartphone sim (no difference than an normal sim) and get mobile data which allows me to use the phone when WiFi is not available (I don't want to use my phone as a hotspot). The T-Mobile LTE tablet cannot make phone calls or text but can use the text and call on other devices option on Samsung phones which allows you to use the Tablet using your phone number.
On other samsung devices the US models use the Snapdragon chip while the international model uses the exynos chip which can easily unlock the bootloader and root the phone or tablet. I understand that the S6 LTE tablet is using only the Snapdragon chip worldwide so rooting may be much more difficult. However the international version should have the OEM unlock available so the bootloader can be unlocked. Normally I only get the international versions and root, but if is getting more difficult each year to root the Samsung devices. I bought a used S6 LTE and am happy with my tablet.
rfb813 said:
I have a smartphone sim (no difference than an normal sim) and get mobile data which allows me to use the phone when WiFi is not available (I don't want to use my phone as a hotspot). The T-Mobile LTE tablet cannot make phone calls or text but can use the text and call on other devices option on Samsung phones which allows you to use the Tablet using your phone number.
On other samsung devices the US models use the Snapdragon chip while the international model uses the exynos chip which can easily unlock the bootloader and root the phone or tablet. I understand that the S6 LTE tablet is using only the Snapdragon chip worldwide so rooting may be much more difficult. However the international version should have the OEM unlock available so the bootloader can be unlocked. Normally I only get the international versions and root, but if is getting more difficult each year to root the Samsung devices. I bought a used S6 LTE and am happy with my tablet.
Click to expand...
Click to collapse
So you have a smartphone sim in your T-Mobile Tab S6 LTE, and can get unlimited data? Is it a T-Mobile SIM or another carrier? I tried that some years ago with a different tablet and it didn't work because the system recognized it as a tablet and not a smartphone. That would be cool if it works though, I don't care that much about calling and texting, but unlimited data would be cool.
I like the international models too because they can be used like huge phones lol, but they don't have all of the T-Mobile LTE bands, but I think they have enough that it works okay.