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I have a SM-G955N Korean model I bought from eBay. Everything works except Mobile Data. I call ATT (my service) got connected with their Advance Division, and they not did help.
We tried setup a new connect under Access Point Names with no luck. I did notice that more ATT type APNs did add to the list of APNs, I tried each and powered off the phone each time, no luck.
My Wi-Fi works just not the Mobile Data. I typed in the Service Mode code which I got from another thread *#2683662#,(thanks XDA Developers), what I got looks like this:
MAIN MENU
[1] Protocol
[2] UE Setting & Information
[3] ETC
MOBILE: null
MOBILE_IMS: null
When I access The 1,2,3 pages I always get the MOBILE: null and MOBILE_IMS: null at the bottom of every page. My guess these are error codes.
Any help or ideas would be great.
Thank you.
Same here with 955n, null also but I have mobile data running. Lte it says instead of 4g i had on my 955f.
Sent from my SM-G955N using Tapatalk
---------- Post added at 06:34 PM ---------- Previous post was at 06:32 PM ----------
Lte instead of 4ghttp://cloud.tapatalk.com/s/5925d2414e052/Screenshot_20170524-213318.png?
Sent from my SM-G955N using Tapatalk
So yours works, Mobile Data, but you are seeing the MOBILE: null and MOBILE_IMS: null Both or just one?
I read that the seller of a Korean phone has to start it up with a Korean sim card and make a call for 5 minutes or the phone will not work out of their country.
I wonder if this is what happens? No Mobile Data connection.
same for EU phones - if you bought from EU you'd have to 'unlock' it first with an EU sim else it won't work
This guy can help:
Look at this on eBay http://www.ebay.com/itm/322518132661
He switched my S8+ from Tracfone to T-Mobile with all bands working w/ 4G LTE to the point one can't even tell this phone belonged to a different carrier than T-Mobile.
P.S. I had the same issue to where I could connect & surf the Internet with 4G but I was unable to make calls/texts. After he did his magic, which was remotely by the way, my phone got a new life. I bought his service four days ago and my phone is working phenomenally well so far. Give it a try guys.
Does anyone know of a way to unlock the T-Mobile bands on this phone? - the SM-G955N, Can it be done?
There are no clickable options when I access the service menu.
skyprotocol99 said:
Does anyone know of a way to unlock the T-Mobile bands on this phone? - the SM-G955N, Can it be done?
There are no clickable options when I access the service menu.
Click to expand...
Click to collapse
Try Doctorsim
State.of.mind said:
Try Doctorsim
Click to expand...
Click to collapse
Thank you for the recommendation, I'm glad I tried this.
Unfortunately, they DoctorSim was unable to help me as my phone is on the t-moblie network but is not prompting an unlock code.
When I enter this code
*#2683662#
ServiceMode
Not supported
Mobile: null
Mobile_IMS: null
skyprotocol99 said:
Thank you for the recommendation, I'm glad I tried this.
Unfortunately, they DoctorSim was unable to help me as my phone is on the t-moblie network but is not prompting an unlock code.
When I enter this code
*#2683662#
ServiceMode
Not supported
Mobile: null
Mobile_IMS: null
Click to expand...
Click to collapse
No problem. Hmm maybe you will have to do it through T Mobile? I recall that Doctorsim took a long time to work, but it was guaranteed for the phone to be unlocked. Also, did you purchase the premium?
Try
Support.t-mobile.com/docs/DOC-27772
---------- Post added at 03:14 PM ---------- Previous post was at 03:09 PM ----------
On second thought maybe it cannot be done. I pulled this from a previous XDA thread. Source: https://forum.xda-developers.com/galaxy-s8+/help/ive-korean-model-s8-questions-t3590720
"*Since September 2013, Samsung has implemented a 'region lock' on all new stock.
For correct operation, this handset should be activated inside one of these countries with a SIM card issued for use there. The device will then be able to accept SIM cards from outside of these countries.
Activation requires turning the device on for the first time & completing set-up with the SIM installed, then completing at least 5 minutes of voice call(s) with this SIM.
Without activation you may still use the device outside of these countries when 'roaming' - using a SIM card from the listed countries.
If this activation procedure is not followed then the device will lock when first attempted to be used with a SIM card from outside of these regions. Local Samsung support may provide a code to unlock such handsets.
**All member states of the E.E.A and the following additional territories: Albania, Andorra, Bosnia and Herzegovina, Former Yugoslav Republic of Macedonia (F.Y.R.O.M), Monaco, Montenegro, San Marino, Serbia and Vatican City.
From what i understand you might need a sim from Korea to activate it once activated it will work worldwide with any sim card. i could be wrong but that’s how i think it works!"
Another user stated that "Confirmed I had to have my SM-955N unlocked and used in Korea before shipping. Also have the KT logo. Back is actually less busy than other versions without all the FCC, CE etc logos."
Thanks for the help with this!
I am considering mailing the phone to Korea to have someone there do the sim card activation.
But before I do this I want to make sure I understand the lock issue.
The phone does not actually give me a "LOCKED" message, and it partially works T-Mobile, it just does not pickup all the LTE bands, so it only has a connection about 50% of the time. Tmobile recently changed their bands, a month and a half ago it was working perfectly. The main goal is to turn on the locked bands.
If I'm understanding correctly if I take the phone to Korea, use a sim card from there on it, and make calls, then I go back to T-Mobile it will trigger the unlock mesage, which will allow me to access the LTE bands in *#2683662#??
Have you solved this yet?
skyprotocol99 said:
Thanks for the help with this!
I am considering mailing the phone to Korea to have someone there do the sim card activation.
But before I do this I want to make sure I understand the lock issue.
The phone does not actually give me a "LOCKED" message, and it partially works T-Mobile, it just does not pickup all the LTE bands, so it only has a connection about 50% of the time. Tmobile recently changed their bands, a month and a half ago it was working perfectly. The main goal is to turn on the locked bands.
If I'm understanding correctly if I take the phone to Korea, use a sim card from there on it, and make calls, then I go back to T-Mobile it will trigger the unlock mesage, which will allow me to access the LTE bands in *#2683662#??
Click to expand...
Click to collapse
Just curious if you found a solution to this yet?
I read all the posts about how a phone branded and bought in Korea needs to be on a Korean simcard for at least 5 min or so before it will accept any other (non-Korean) simcards.
So since I was based in Korea I bought the S8+ (SM-G955N - 128GB/6GB version) in Korea as soon as it was launched in April 2017 and used it with my Korean telecom provider (KT Telecom) for over half a year. In that period, while travelling outside Korea, roaming on LTE in different countries was never a problem.
Recently, I have moved from Korea (to Europe) and got a local simcard (Vodafone - NL). I can get on my provider's network, receive/send calls/sms, etc. No problem, but no LTE! Only some 3G/Edge!
I tried the 'service menu' with *#2683662#, access is possible but it gave back the same:
ServiceMode
Not supported
Mobile: null
Mobile_IMS: null
So first I thought it was related to KT Telecom how their GiGA LTE technology is somehow dependent on the use of a KT Telecom simcard with the KT Telecom network and basically without the KT Telecom simcard, basic LTE functionality would stop.
So I am reading through the different internet forums and advice from other users, but as far as I can tell, I don't think there is any other solution for me then to flash my phone with a less 'Korean-ized' stock firmware and hope this will resolve my problem.
Since, technically my phone is still under warranty, I am a bit taken back with all the extensive 'liability waivers' and step-by-step instructions. Rooting and flashing my phone is my last resort option.
I am just wondering if there are any other SM-G955N users out there who encountered the same problem and made some progress in any other way. Any feedback or comment is mostly appreciated.
I picked up a Korean G930S that had Chinese CSC, and I put an F ROM onto it. The CSC did not change. Here in the US the Chinese CSC worked just fine on the AT&T service getting 4G/LTE. I flashed an XAA CSC (probably not the correct one now that I think about it), which would not connect up.
I restored the phone back to the F ROM/Chinese CSC setup and don't worry about it at this point.
As I understand so far, what ever phone 'ROM version' you have is the CSC you will need to flash, meaning if you have an F ROM for example,you'd need to flash a CSC package that is 'made' for F ROM's. My 8+ went from an International 8+ 955F to look like and ROM function as a Note 8,so I needed a Note 8 CSC if I cared to have that 'match' more specifically to my local carrier, AT&T.
I can't say that the XAA Note 8 CSC works any better than the original 955F International CSC with AT&T, or not.
For my 8+ F, I flashed a Note 8 ROM, and wanted to find a Note 8 CSC (US) package for the phone, as I wanted the CSC to match where I live.
It wasn't really necessary, as the phone had an F (International unlocked CSC sorta thing stock on it) whick worked just fine here in the US. Never the less, I found the correct Note 8 CSC and set that up correctly with an XAA CSC, and it works just fine, as well.
test
Hodori75 said:
I read all the posts about how a phone branded and bought in Korea needs to be on a Korean simcard for at least 5 min or so before it will accept any other (non-Korean) simcards.
So since I was based in Korea I bought the S8+ (SM-G955N - 128GB/6GB version) in Korea as soon as it was launched in April 2017 and used it with my Korean telecom provider (KT Telecom) for over half a year. In that period, while travelling outside Korea, roaming on LTE in different countries was never a problem.
Recently, I have moved from Korea (to Europe) and got a local simcard (Vodafone - NL). I can get on my provider's network, receive/send calls/sms, etc. No problem, but no LTE! Only some 3G/Edge!
I tried the 'service menu' with *#2683662#, access is possible but it gave back the same:
ServiceMode
Not supported
Mobile: null
Mobile_IMS: null
So first I thought it was related to KT Telecom how their GiGA LTE technology is somehow dependent on the use of a KT Telecom simcard with the KT Telecom network and basically without the KT Telecom simcard, basic LTE functionality would stop.
So I am reading through the different internet forums and advice from other users, but as far as I can tell, I don't think there is any other solution for me then to flash my phone with a less 'Korean-ized' stock firmware and hope this will resolve my problem.
Since, technically my phone is still under warranty, I am a bit taken back with all the extensive 'liability waivers' and step-by-step instructions. Rooting and flashing my phone is my last resort option.
I am just wondering if there are any other SM-G955N users out there who encountered the same problem and made some progress in any other way. Any feedback or comment is mostly appreciated.
Click to expand...
Click to collapse
I have family members visiting from Korea, and they have the same phones. I was trying to set them up with US Mobile which is a T-Mobile's MVNO. So initially, I've faced the same issue as you, where I was only getting the voice calls working and no data. I was able to download an app called Force 4G LTE from the app store that let me change the radio network setting to LTE Only (or other options that include the LTE band). That fixed the data issue and I was getting LTE from that point.
The next problem I ran into, however, was the voice. When LTE is on and working I was no longer getting voice calls (both outbound and inbound). And when I switch it to some non-LTE radio band to turn on the 'Edge' signal back, voice worked again. I chatted with a US Mobile's service representative for a while to try to fix the issue -- in the process also tried turning off HD Voice / VoLTE option -- VoLTE wasn't working for me anyways since I am not using T-mobile's service directly. But that didn't resolve the issue either. After many different tries -- I had to eventually just give up and tell the family member to stick to internet calling for their duration of the visit.
The problem seemed to be that the phone couldn't simultaneously use LTE for data and Edge for voice and was connecting to either LTE or Edge for both.
I'm curious about this as my Korean Note 8 did not need local activation, and with all the research I found Korean models are never SIM or carrier locked and do not require regional SIM activation like the F variants.
As far as using a 935N on tmobile in the USA as long as it supports LTE bands 2,4 and 12 it should work fine. Out of the box my Note 950N worked on LTE and by manually enabling IMS and RCS in the IMS Settings app, VoLTE worked too.
I have since created a CSC patch that changes the CSC to T-mobile to make the phone features more applicable, and add T-mobile's wifi calling but I'm fairly sure the S8+ is basically the same hardware as a Note 8 so if all you need is LTE data and voice calling you shouldn't need to flash anything.
To correct a misinformation about CSC per device, they are not platform specific. My T-mobile patch uses a mostly stock 950U T-mobile CSC base, and I can tell you that there is nothing in the CSCs themselves that has anything to do with Exynos or Snapdragon.
I have the same problem
I have the same problem
Vicious_jm said:
I have a SM-G955N Korean model I bought from eBay. Everything works except Mobile Data. I call ATT (my service) got connected with their Advance Division, and they not did help.
We tried setup a new connect under Access Point Names with no luck. I did notice that more ATT type APNs did add to the list of APNs, I tried each and powered off the phone each time, no luck.
My Wi-Fi works just not the Mobile Data. I typed in the Service Mode code which I got from another thread *#2683662#,(thanks XDA Developers), what I got looks like this:
MAIN MENU
[1] Protocol
[2] UE Setting & Information
[3] ETC
MOBILE: null
MOBILE_IMS: null
When I access The 1,2,3 pages I always get the MOBILE: null and MOBILE_IMS: null at the bottom of every page. My guess these are error codes.
Any help or ideas would be great.
Thank you.
Click to expand...
Click to collapse
Here's some more information about this issue.
https://forum.xda-developers.com/showpost.php?p=81262805&postcount=18
Hello everyone, im new here kept searching everywhere for solution for my problem without any success. In may 10 i bought SM-G955N KT module, it was working great with 2g / 3g / 4g / LTE / LTE+, i went out of usa for almost 3 month and when i came back my phone doesn't work well with tmobile, i can send msgs use lte internet but i cant do calls at some areas, some times i have full lte bar and when i try to make a call it goes to 0 signal bar, i called tmobile many times about the issue but no solution i found out that they did upgrades to their towers in the period i was out of usa from may to august, right now i cant use the phone as any normal person its been a month that i cant use the phone at my house and some areas, i can make calls sometimes if im at different tower locations. Question is, is there any solution for this problem since tmobile did those tower upgrades its screwed up everything..... should move out to att or verizon or what should i do. I really need help with this problem its been a month, any solution would be welcome if it requires root or not i dont care i just want to find a solution for this,
Thank you.
Have you tried resetting your network settings and/or getting a new sim card?
Its not the sim card i already changed it to a new one also i tried it on a iphone 7s plus and it works fine, my phone is bone stock no root no custom software alsi its the korean version when i looked around i found that tmobile did some network upgrades from may to aug and thats when my phone got screwed up, i was albe to play with the ims setting and i got the phone to recive calls but i cant make calls, does my phone screwed up because it has the korean csc and the stock firmware or whats going on here
I'm not quite sure I understand your experience. From what I am reading, you went to Korea, got the G955N (which I bought for both myself and my wife), and then came back to the states and can't get it to work with T-Mobile?
I tried to get mine to work with T-Mobile and have experimented extensively with different CSCs and ROMs.
I eventually went over to AT&T
I've also had a rather extensive experience of how to get 4GLTE working here in the states with AT&T.
Feel free to reply here or DM me if you wish.
caniswesley said:
I'm not quite sure I understand your experience. From what I am reading, you went to Korea, got the G955N (which I bought for both myself and my wife), and then came back to the states and can't get it to work with T-Mobile?
I tried to get mine to work with T-Mobile and have experimented extensively with different CSCs and ROMs.
I eventually went over to AT&T
I've also had a rather extensive experience of how to get 4GLTE working here in the states with AT&T.
Feel free to reply here or DM me if you wish.
Click to expand...
Click to collapse
Hello thanks for your input, actually i bought the phone in the box brand new from amazon, it came here on may 10 i used it for 7 days 4G LTE 3G works great then i had to go out of country for 3 month i came back at the end of august to find that tmobile did a huge tower upgrades in my area, since i came back i wasnt able to do calls and receive calls, i was only able to text and use LTE internet but not calls, i went to different towers area and i actually was able to make calls but not in every area because some times my signal bar goes down to 0 or even 1 signal and i cant make calls still but my other friends who owns iphones or usa version of android works fine except me. Yesterday i edited the IMS setting im still on stock fw and i enabled every single feature there and i was able to receive calls in my area but still i cant do calls, i wanted to make sure if im gonna follow the steps here in this guide i will be able to use TMOBILE CSC with the korean stock firmware and get the features of tmobile as VOLTE and WIFI CALLING etc with the right CSC for sure and without tripping knox
Thank you
Hi, I did some extensive searching and was not able to find a solution for this.
I've got the SM-G955N, and ran into the same issues as other users in this thread with T-Mobile, has anyone found a workaround to unlock the LTE bands necessary to make the SM-G955N work with T-Mobile?
I didnt find solution yet too, i dont know what to do i gave up i tried everything on the official software no root.
androw3349 said:
Its not the sim card i already changed it to a new one also i tried it on a iphone 7s plus and it works fine, my phone is bone stock no root no custom software alsi its the korean version when i looked around i found that tmobile did some network upgrades from may to aug and thats when my phone got screwed up, i was albe to play with the ims setting and i got the phone to recive calls but i cant make calls, does my phone screwed up because it has the korean csc and the stock firmware or whats going on here
Click to expand...
Click to collapse
I had a phone with the Korean CSC as well, N phone as well. I left the CSC alone and it worked with T-Mobile and ATT here in the US just fine, last fall.
I later changed the CSC to XXA, and still works well. Just tested it this week with T-Mobile, and it's working. I have to say, that locally, T-Mobile has much poorer spot area service than ATT. Kinda puzzling, but that is the way it is.
My phone is rooted, so it make things a bit more handy to mess about and return to my previous setups.
Hi, I got a Samsung Galaxy J7 Prime off Amazon, problem is that I am currently in the USA & using a T-Mobile USA line, the device is unable to detect the carrier's 4G LTE or 3G Networks, it only picks up 2G (Edge) networks. I have switched sims a few times & toggled the 4G/3G/2G & 3G/2G auto connect options, but nothing seems to work. I was informed that perhaps the device is not compatible with this carrier. Does anyone have any experience with this issue? As I need fast internet on my phone & can't afford to purchase a new phone at this point.
Thank you
According to this Samsung SM-G610F Galaxy J7 Prime TD-LTE Compatibility on T-Mobile (United States) Mobile Network
you should be able to at least access 3g.
I don't know if its possible to change the LTE frequency band on the J7 Prime via Service Mode / Secrets Codes
Something like this Change Network Bands on Any Samsung Phone Without Root
*#0011*#, key input: Q 0000
Then navigate through the menus and look for bands and find t mobile bands
Hi, unfortunately, this didn't work, can you explain a bit more how I should do this?
Thanks.
fullofhell said:
*#0011*#, key input: Q 0000
Then navigate through the menus and look for bands and find t mobile bands
Click to expand...
Click to collapse
If the codes don't work straight away, you'll need to enter Service mode.
How to do this on the J7 Prime?
Sent from my SM-J700F using Tapatalk
chijoks said:
Hi, unfortunately, this didn't work, can you explain a bit more how I should do this?
Thanks.
Click to expand...
Click to collapse
Sorry for the delay, final projects for school are a pain.. I would start trying in a trial and error fashion, any and all dialer codes for your phone. BUT, u must be on stock for any to work. Find a guide and start punching buttons. Once you get into service mode, u will need to locate service bands and switch them to LTE that are within t mobiles service structure. Usually around 800 and up. I hope that helps. And good luck, I tried this for 2 months with a note 4 and couldn't get very far. If it's unlocked, sim and Carrier unlock, it should be easier. Also make sure the imei isn't blacklisted. Swappa allows u to check. All of these things must be done concurrently with the proper band selection. Good luck and just stick with it.i actually got mine switched from a sprint device to a t mobile, but unfortunately the device only works for 2 min increments due to a device financing block the previous owner had still. So it's sitting in my drawer of a smart phone graveyard
If you have root try this app
Phone INFO ★Samsung★ on PlayStore
Just received my S9+ 256GB Korean Variant SM-G965N. This is going to be my experience with this particular variant and its compatibility with the T-Mobile network. Currently it shows I'm connected to Band 2 LTE but the speeds I'm my area are very slow. Withing the next couple days I'm am going to test the network throughout my area in Cali and test speeds and connectivity and report back. Unfortunately the build of Samsung pay is customized for S.korea only and not compatible here in the US.
Current build after first update is G965NKOU1ARC7
Baseband versions G965NKOU1ARC4
I have some data speeds this afternoon while out driving. The long screenshot is from my G965 and the short list of from a T-Mobile variant S7 . Connection to the network itself has been stable with no notice of dead spots or issues switching towers, if anything I'd say the switch is faster from what I've notice between devices.
Excellent...a lot of us have been waiting for this...thanks for testing...
I was curious about this. I have a G965U1(S9+ Unlocked North America variant).
I have a second phone with Ting GSM(T-Mobile), and I tried a few speed test. The phone configured it self to send calls over wifi when ever I connect to wifi. I found that peering with Sprint appears to be an issue.
Test 1:
http://www.speedtest.net/my-result/a/3760631925
Test 2:
http://www.speedtest.net/my-result/a/3760634735
Test 3:
http://www.speedtest.net/my-result/a/3760638116
These are all from the same location.
https://imgur.com/a/mYrqj
clockedtouch said:
Just received my S9+ 256GB Korean Variant SM-G965N. This is going to be my experience with this particular variant and its compatibility with the T-Mobile network. Currently it shows I'm connected to Band 2 LTE but the speeds I'm my area are very slow. Withing the next couple days I'm am going to test the network throughout my area in Cali and test speeds and connectivity and report back. Unfortunately the build of Samsung pay is customized for S.korea only and not compatible here in the US.
Current build after first update is G965NKOU1ARC7
Baseband versions G965NKOU1ARC4
Click to expand...
Click to collapse
Yo im one jealous F*** right now.... Lucky effen you, where did you order from?
Also, Samsung Pay is still force closing on most Oreo Builds, have been,....
Hey guys,
I also got an international S9+ (SM-G965F) but from Germany Unlocked (DBT). So far the signal seems to be great. Will post some Speedtests later. The only downside is that wifi calling and VoLTE is not there. It was working with my German sim. Other than that it's been great.
clockedtouch said:
Just received my S9+ 256GB Korean Variant SM-G965N. This is going to be my experience with this particular variant and its compatibility with the T-Mobile network. Currently it shows I'm connected to Band 2 LTE but the speeds I'm my area are very slow. Withing the next couple days I'm am going to test the network throughout my area in Cali and test speeds and connectivity and report back. Unfortunately the build of Samsung pay is customized for S.korea only and not compatible here in the US.
Current build after first update is G965NKOU1ARC7
Baseband versions G965NKOU1ARC4
Click to expand...
Click to collapse
Have you flashed T-Mobile CSC? I assume you have to root and make a custom zip to flash the files. If the phone thinks it's a legitimate T-Mobile phone then it give you full speeds.
Also is the Korean phone a duos? Dual SIM?
Psyscope said:
Have you flashed T-Mobile CSC? I assume you have to root and make a custom zip to flash the files. If the phone thinks it's a legitimate T-Mobile phone then it give you full speeds.
Also is the Korean phone a duos? Dual SIM?
Click to expand...
Click to collapse
I dont think that is possible. Isn't the Korean version run on Exynos? Flashing a Snapdragon CSC for TMB would be wonderful but I think would mess lots of thinks up. Hopefully someone will be able to change the CSC to work on the exynos processor.
Okay so the weirdest thing happened to me. I tried to use Samsung pay a few days ago. I used app cloner to copy the working version of my note 8 snapdragon and sent it to my S9+. It didn't work and gave me the connection error. Now I was just on the phone and out of boredom I tried to open Samsung pay again while on the phone and it magically worked. It asked me for my Iris and fingerprint and I was able to add my cards again. Again, this is on exynos DBT from Germany without any modifications or OEM unlock.
Hope this will help at least with Samsung pay.
Psyscope said:
Have you flashed T-Mobile CSC? I assume you have to root and make a custom zip to flash the files. If the phone thinks it's a legitimate T-Mobile phone then it give you full speeds.
Also is the Korean phone a duos? Dual SIM?
Click to expand...
Click to collapse
Yes am looking into seeing how I can configure the CSC to achieve full T-Mobile speeds. The Korean variant in not a duos.
AndroidDevices said:
Yo im one jealous F*** right now.... Lucky effen you, where did you order from?
Also, Samsung Pay is still force closing on most Oreo Builds, have been,....
Click to expand...
Click to collapse
I have a friend that works at Sammy S. Korea that picked it up for me, as for Samsung pay the apk is specifically built for the Korean market and has a different activation process which requires a text from one of the local carrier networks which I cant bypass.
Sunnyschlecht said:
Okay so the weirdest thing happened to me. I tried to use Samsung pay a few days ago. I used app cloner to copy the working version of my note 8 snapdragon and sent it to my S9+. It didn't work and gave me the connection error. Now I was just on the phone and out of boredom I tried to open Samsung pay again while on the phone and it magically worked. It asked me for my Iris and fingerprint and I was able to add my cards again. Again, this is on exynos DBT from Germany without any modifications or OEM unlock.
Hope this will help at least with Samsung pay.
Click to expand...
Click to collapse
The build is completely different and won't work because of the region and coding in this software build. I am not ready to root yet so I'm going to tinker with software that's official and see what I can get working, improve on for now.
Sunnyschlecht said:
Hey guys,
I also got an international S9+ (SM-G965F) but from Germany Unlocked (DBT). So far the signal seems to be great. Will post some Speedtests later. The only downside is that wifi calling and VoLTE is not there. It was working with my German sim. Other than that it's been great.
Click to expand...
Click to collapse
What operator do you use, I am at T-Mobile with a 695F and it does not connect at 4G.
Anyone has a clue?
titoh said:
What operator do you use, I am at T-Mobile with a 695F and it does not connect at 4G.
Anyone has a clue?
Click to expand...
Click to collapse
Not really. I'm also on T-Mobile USA and have the German exynos. The apn settings were loaded correctly. Maybe check them in the settings and make sure it's set correctly. The only thing that is not working is VoLTE and wifi calling.
Samsung pay finally works with the credit cards but the membership doesn't work.
Gesendet von meinem SM-G965F mit Tapatalk
titoh said:
What operator do you use, I am at T-Mobile with a 695F and it does not connect at 4G.
Anyone has a clue?
Click to expand...
Click to collapse
ow did you do the initial setup with or without the T-Mobile sim inserted ? I noticed when I originally set my Korean variant up without the sim, for some reason I did not connect to LTE in my area and after oem unlock and restart/ full wipe it connected perfectly since.
I've got the same model, I'm with ATT, speed test shows 31m down and 10m up, but actual downland from play store is less than 2m...
Hi do you receive benefits in your samsung members app?
Yes if we can get T-Mobile CSC settings to enable VoLTE and Wifi calling then I will root.
I am recently realizing Samsung Pay is not everything it's cracked up to be. It doesn't seem like they have many 3rd party companies registered, so I made a custom loyalty with the barcode, but it doesn't work when it's scanned at checkout. Funnily enough, I have the loyalty in GPay as well, and it works just fine. Also SPay doesn't seem to work in gas station cc readers where you stick the card in and pull it out instead of swipe. Unfortunately it just doesn't seem like the technology is there yet where we can ditch traditional cards.
snooyy said:
I've got the same model, I'm with ATT, speed test shows 31m down and 10m up, but actual downland from play store is less than 2m...
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ill trade u lol
@clockedtouch, a few months later now, are you still on the 965F & TMo US? Any update wrt VoLTE?
EDIT: nm, thanks to @TEKHD N8/S8x/S9x OREO USA T-Mobile EFS-CSC DETONATOR v2.2 INT TEKHD
Hello and hope you guys are well, and I apologize if my post is lacking any info or in any way as I'm still new here.
I have an SM-S908U1 with XAA/XAA CSC code, I hope someone can help me with which CSC should I patch it with to fix poor network issue (poor quality call, poor network signal and barely working LTE/4G).
To give more context, I live in Morocco, my phone used to work fine, I'm not sure what CSC code it has before as I only learned a bit about what CSC is after the research I've done when I had this issue a couple weeks ago.
I travelled to Turkey and used a Turkish SIM card there, it worked fine. I also installed the official January update while I was there.
I came back home on January 23rd, and put back my Moroccan SIM card and noticed the network issues right after, used different SIM cards from different operators, all with the same issue.
I tried all the possible fixes, from resetting network settings to factory resetting my phone, and I even downgraded android to November's security patch version (using ODIN and a ROM for SM-S908U1 XAA) in case the issue was caused by the newest update. None of those worked. I just updated the phone the normal way to January version again.
After a lot of research online, I now think the guy I purchased the phone from maybe patched the phone but whatever he did was overwritten while I was abroad and/or maybe with the software update.
Now I wish someone can point me towards what CSC code should I patch (if any), Morocco's CSC is MWD but it's for SM-S908E with Exynos and I'm worried patching my phone with that one wouldn't work. And I have no idea if any of the other CSC codes for SM-S908U1 would solve the issue or if I have to do something else other than changing CSC.
Thank you for reading all of this even if you have no clue about it, and I'd so appreciate any help pointing me to in the right direction.
You cannot flash Morocco or European CSC on US S22U. However, you can unlock all LTE & 5G bands using the service menu which should help with your connection issues outside US. See this guide.
peacey8 said:
You cannot flash Morocco or European CSC on US S22U. However, you can unlock all LTE & 5G bands using the service menu which should help with your connection issues outside US. See this guide.
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Thank you very much, that sounds like it would solve my issue, I'm going to try that today and post an update later.
peacey8 said:
You cannot flash Morocco or European CSC on US S22U. However, you can unlock all LTE & 5G bands using the service menu which should help with your connection issues outside US. See this guide.
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I did all the steps in that guide and unlocked all LTE and 5G bands, I can now see LTE+ (instead of just LTE before) but the network issue is still present, even with LTE+, internet is very slow (slow ping and 1~2Mb/s speed compared to 40Mb/s on other phones in same location), call quality is also still bad, hope you and someone has a clue what might be the problem.
Hi @peacey8, sorry to bug you again. I followed your guide and enabled all bands and still have the poor network issue, when I compared my list of bands to your screenshot, the only thing that is different is that on yours it's showing: CDMA: w HDR, on mine it's CDMA: w/o HDR, I wonder if that could be the reason.
If I go to CDMA band preference to activate With HDR, it says "NOT SUPP".
Thank you in advance and please let me know if you have any ideas.