Anyone having a data roaming issue with Oreo? - Samsung Galaxy S7 Active Questions & Answers

Hey all, I'm a Canadian truck driver that has an (unlocked) S7 Active (on T-Mobile) that I've recently upgraded to Oreo via Odin. The phone works better than ever except now when I'm in Canada, network data no longer works properly. I say properly because every once in a while it will connect long enough to receive a few emails then will disconnect again. But most of the time it just doesn't connect. The data roaming worked perfectly on Nougat (BRA7).
Here's what i've done so far:
Clean install of Oreo (CRE7) via Odin 3.13.1
Factory reset via recovery
Cleared Cache via recovery
Data doesn't connect properly.
Downloaded CRE7 again in case it was a bad download.
Repeated the flashing, factory reset, and clearing of the cache just in case something went wrong.
Data still not working properly.
Updated from CRE7 to CRH1
Updated from CRH1 to CRJ1
Cleared cache
Restarted phone, cycled airplane mode, #766#
Data still not working properly
Bought a new SIM thinking that may be the problem. But no change with the data.
And yes mobile data and international data are turned on in the phone.
When I flashed the phone I was at home in Canada. So I thought maybe it would have to connect to a T-Mobile tower to get the proper network settings. So on my next trip to the US, the data worked perfectly in the US once it connected to a T-mobile tower. But once back in Canada it stopped working again.
When I manually try to switch to a Canadian network (Bell, Telus or Rogers), I will get the message "Disconnect Network... Unable to search for networks while data service is in use. Stop using current data service and search for other available networks?" Which I find strange because the phone isn't connected to data.
I have found a temp solution to getting the LTE to work by opening an app that requires location data (in my case it was Weigh My Truck), and that seems to force the phone to connect to the LTE network.
I've bought a 2nd s7 active to have as a spare phone and won't be updating it until Oreo is 100% stable on the S7 active.
Does anyone else have this issue? Is there a permanent fix?

Related

No Mobile Data - Help please!

Hi All,
I got my Note 2 today, and have run into a problem already
Mobile data (HSPA+) was working when I first got the phone and used it between the shop and the way home.
When I got home, I switched over to wifi to download things.
I then flashed CWM from the cwm-root-note2.tar.md5 file in Dr Ketan's guide using PC Odin.
Then, I flashed Omega v3 via CWM.
All went without a problem.
I was still on wifi and downloading and installing all of my apps.
After a while I turned off wifi and I noticed that I wasn't getting any mobile data connection. I was getting 3 or 4 bars of mobile signal, but no 3G, H or H+ symbol to indicate mobile data.
I messaged a nearby friend on the same carrier and he said his was working fine. So, I figured I must have messed up the mobile network settings,
I checked the APN settings and they were blank, so I put them back in manually.
Still no data connection,
I went into CWM and wiped cache, dalvik and user data.
Still no good.
I downloaded the stock XXALJ1 ROM for Thailand (where I am) and flashed that, did another 3 wipes, but still no luck.
I tried doing a factory reset from the settings menu. But still no joy.
I put the SIM card into my Note 1 and it got a H+ straight away and data was working fine.(when the shop cut it down, they made a nice neat job of it, so the excess makes a decent micro sim holder). So, the network and SIM card are OK.
I noticed that when I first got the phone, the boot screen said "N7100" under "Galaxy Note II".
Now, it doesn't. I'm not sure when it changed.
I also noticed that when I do the under/factory resets, there are still some settings that aren't reset, For example, I set it to WCDMA only to see if that helped and then when I did a factory reset, it was still set like that, rather than the default "auto" that it originally comes with.
Unfortunately I didn't do a nandroid backup, as my phone came with XXALIH (without the multiscreen), so I figured I'd updated to LJ1 first.
Does anyone have any suggestions of what I can do?
Is there a full wipe ROM, or a way to reflash the bootloader and ROM?
It's 3am now, so I need to go to sleep, but this is annoying the hell out of me.
Thanks,
Rich
Carrier please?
wonsanim said:
Carrier please?
Click to expand...
Click to collapse
True Move H in Thailand.
I don't think it's a carrier issue, as I can put the SIM into my Note 1 and get H or H+ data connection straight away.
Also, I compared the APN settings and I have the exact same settings in the Note 2 and Note 1.
Mobile data was working on the Note 2 when I first got it.
Thanks,
Rich
Turn mobile data on in settings/data usage.
I doubt that his data is turned off in the settings is the problem since he already stated that he tried resetting to factory settings.
I'd suggest simply using odin to reflash J1 onto the phone and start from scratch again. This is why the devs always remind people to do a nandroid backup. In case of situations like this.
Sent from my GT-N7100 using Tapatalk 2
Thanks. Yes, Mobile data is ticked. I tried toggling that early on in case it just wasn't connecting properly or something.
I've tried flashing the stock J1 a few ties, but no joy.
It doesn't seem to do a full install, as the circle battery mod I installed previously is still there after flashing stock J1...
I'm downloading a stock XXALIE for Thailand at the moment and will try that.
It's still got 30 mins to go, and I have to leave for work soon! So, I might have to spend the day relying on wifi when I can get it
I'm wondering if the change in boot loader has anything to do with it. (Originally had "N7100" on the boot screen and now I don't, just "Galaxy Note II")
maybe APN settings are wrong? I'm from sri lanka, and I had to add an apn for mobile data to work.
OK, I finally fixed it. Here is what I did (in case anyone else has a similar problem)
Flashed stock LJ1 via odin
Downloaded Galaxy S/S2/S3 CSC
Reset my CSC to THL
Now when it restarted it picked up mobile data signal without me doing anything to the mobile network settings.
I reflashed Omega 3 and lost mobile data again. I tried the Galaxy CSC app, but it says there is only 1 CSC.
So, I went back to stock Thai LJ1.
This time I got an OTA update straight away. After that installed I noticed the boot screen had changed back to showing GT-N7100 again.
ROM is now XXALJ3 and the modem is DXALJ1
Flashed CWM and reinstalled most of my apps from Titanium Backup.
Everything is still OK.
So, it looks like I can't use Omega ROM because it changes the CSC and I can't change it back to THL.
Is there any way to install the CSC separately after flashing Omega?

[Q] Note 2 LTE cellular data dropping out

Last couple of days have noticed the cellular data drops out and have to deactivate data and reactivate for it to work again. It still shows there is 3g/4g etc and there is signal but try to connect to anything times out.
Annoying this used to happen with my S2 with Telstra as well. I am on stock Telstra rooted with CF Auto Root. Tried wiping cache / dalvik cache still an issue. Phone has never done that since I have had it. Only thing I can think is there has been a fair few updates to the Super SU app recently and the binary but that shouldn't affect the modem.
Any ideas? Cheers

Showing no service though sim is detected

I unlocked bootloader and installed purenexus on my friends N5X.
It all went good for 2 week then the phone was not connecting to 3G,though 2G was okay.I thought it was a temporary network problem.
Then after a day I wiped Data then 3G was back,but then after an hour It showed 2G again and then lost all network connection.
I saw that the IMEI and Baseband is okay so no problem there.
Things I did:
-wiped data cache.
-Flashed ROM again.
-Flashed latest vendor and latest ROM.
-Tried different SIM.
Still no network.
Any help would be appreciated.
Check current APN setting and edit to appropriate input. I personally delete other APNs my phone does not need. I'm throwing a random guess, but maybe it could be from the phone automatically setting APNs upon phone restarts.

Pixel 2 XL cellular data issue with any custom ROM

Recently i have entered some state in which mobile data is busted on my phone. I have tested multiple android pie roms to find the same thing in each. When i flash the latest stock android (PQ1A.181205.002), mobile data is fine. In this broken state i can see the signal bars with a little 'R' by them (notification on lost mobile data connection Data roaming is turned off. tap to turn on). Every time i navigate into Settings> Network & internet > Mobile Network > Advanced > Carrier Settings. The screen will flash and take me back to Mobile Network, this happens with every custom rom tested. The app SprintDM tries to set up the phone 5 times and then fails. Phone codes seem to have no effect. the code 4636 will allow me to view current info in which it says mobile data disconnected. It doesn't appear to matter if i connect to wifi and allow the basic stock apps to update first. Reboots do not help. I even tried flashing the modem and radio for PQ1A.181105.017.A1 and OPM4.171019.021.R1. I can also say the phone app shows a message "This device is not supported and phone calls may not work correctly". Phone calls work fine. Previously i was running LiquidRemix (10.0.2) just fine, everything working. Randomly mobile data died so i tried a update to LiquidRemix (10.0.3) and still busted. Tested multiple other PIE roms to find the same. And again if i flash any stock firmware mobile data is fine. Anyone else see this or have an idea of how to fix this for custom roms?
I rooted my pixel2xl yesterday and installed Havoc OS.
Today I was out with my family and was trying to navigate via Google maps and it continuously displayed error "try again"
Status bar was showing lte connection then I tried opening chrome and was unable to use mobile data even if it being on and active.
I am planning to move to Stock again tomorrow
vipulkarkar said:
I rooted my pixel2xl yesterday and installed Havoc OS.
Today I was out with my family and was trying to navigate via Google maps and it continuously displayed error "try again"
Status bar was showing lte connection then I tried opening chrome and was unable to use mobile data even if it being on and active.
I am planning to move to Stock again tomorrow
Click to expand...
Click to collapse
vipulkarkar, did you find out any other additional info on this? I went back to stock and everything is fine but would very much rather be running a custom rom.
Just seeing this post, fortunately, I've not run into this issue on stock or custom roms ... What I do run into, on stock or custom roms, is when I leave my house, with a T-Mobile CellSpot, I tend to switch to 3G or H+ in an LTE area. I sometimes have to cycle airport mode a couple times to get LTE back.. So odd and annoying!
Is there something we Sprint users could do to help the devs include Sprint connectivity in their roms? Like provide a nandroid backup of our device or ?

Internet connectivity issue after updating to Android 10

(Sorry I initially posted in the wrong forum S10)
I have this issue: No mobile data connection since updating to Android 10 on 12/31/2019. WiFi is working fine. Tried wiping the cache partition, restarting, resetting network. Tried calling carrier (Redpocket/Verizon) who did provisioning and taking out SIM card and reinserting/restarting. When switching SIM card to another phone (Galaxy S8+ using Android 9), no issue (Internet worked just fine). But another SIM card on my cell phone (Note 10+) didn't work either. So clearly the issue is with my phone (after the software update), not carrier.
Took the phone to local Samsung store on 1/2/2020. Was told I was the first one reporting this since the Android 10 roll-out. They suggested a "flash factory reset" (remove everything and install from scratch) which I was very hesitant to do. Then they suggested waiting for a patch to be released, if there will be one ever.
Now that I have tried to backed up everything on my own. I did "factory reset". Voice call and texting are working. But mobile data is still not working. Plan to take it back to Samsung for their "flash factory reset". It is 3 hours drive to the closest Samsung authorized repair store, now I have relocated to another area. Any advice?

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