Trouble with data connection when mobile - Google Pixel 3a Questions & Answers

Hi all,
Starting to get frustrated with my 3a and looking for avenues to address difficulty in maintaining a data connection when on the move. In all other ways this phone has been great.
When I am on the move - on the train, or in a car - my phone seems to lose data connectivity after a period of minutes. It seems to be an issue with maintaining a data connection when switching from tower to tower (at a guess). The phone does maintain mobile reception and I can be on a call without dropouts, but if for example watching a video, the video will stop, and eventually I will get the little cross in the reception icon to indicate no data connection.
No issues when not moving about, but am currently doing a lot of work on the fly, so hotspotting or conference calls are near impossible. This didn't always seem to be a problem, but due to Covid (and not moving around for a while), not sure exactly when it started. Have done some googling and tried a new sim card + changing private DNS settings with no luck. On the latest available update.
Is this a known issue with this phone? Any way I can diagnose or fix? Or am I looking at a new phone at this point?
Have rooted and switched ROMs on many previous phones, so quite happy to go down that path if need be.
cheers

I understand you say this only happens when you are moving but I would recommend checking with whatever carrier anyway maybe look on your carrier help site and write your same post here there and see if anyone else experiences the same. I would also save everything to USB or PC and flash factory image via fastboot and let it wipe not removing the fastboot -w in the./flash-all.sh. You could use an app like LTE discovery and set it to where you know exactly what it's doing and when it does it because you can set a small beep sound or wherever. What carrier do you use? Maybe update roaming , prl and profile, if you use a CDMA carrier. Also what type of case are you using? Just a few things that I thought of after reading your post here. You've probably already done all this but if not that's definitely what I would do. And last but certainly not least, are you using a custom rom or stock? Maybe check your/apns-conf.xml/ aka your apns and make sure they're correct and all for your carrier. I don't think you have to worry about apns unless you are using a custom rom in which case I would definitely check it out because sometimes they can be not right. I use Metro by T-Mobile and I'm located in the USA.
If you are on a custom rom you could try the old apn fix and just see if it's apn related... Wouldn't hurt anything.. Just save your current /apns-conf.xml/ and delete the apns-conf.xml file in your /system/etc/ and in /system/product/etc/ and replace the one in /system/product/etc/ with the one i link here and set permissions on it to 0644, then go to settings on your phone /networks and internet/ mobile networks/ scroll to bottom there and select access point names. Should be a lil three dot thing in top right and when you hit that select "reset to default" or "reset to default apn" and wait another 60 seconds or so then reboot. That will replace your apn configuration file. My file is recently copied from my last custom rom where everything worked fine and I had no issues. If this somehow is related to an apn outa wack then this will fix it. I learned this back years ago on another device forum from spaceminer here on xda. I've used this many times since and it's always worked. Again you don't need to do this on stock , only if you are using a custom rom. I believe stock is good.
my apns-conf.xml: is.gd/2MPL8W

Related

No Data Connection in the US?

I recently received my Touch Pro, and transferred everything from my other phone over. I also copied the GPRS/EDGE settings (T-Mobile USA) present on the other phone, in an attempt to get internet without the Wi-Fi over. Unfortunately, for some reason, no matter how I set it (I looked up 3 different ways to do it online) it returns an error.
I thought it might be a radio band issue, so I flashed Hard SPL and the Cingular radio stack. Even more unfortunately, after doing so, it was impossible to turn on the Data Connection at all. I backtracked and located the problem as the Hard SPL, since when I flashed the radio stack back to stock, the problem was still present, and when I flashed Stock SPL back, everything went back to working fine.
Since I'm new to the scene, I wasn't really sure what was going on, so I don't really understand what the problem is.
Anyone have anything to say about either of those problems (constructive advice)?
Thanks in advance.
How about the T-Mobile Wireless Configurizationalator?
http://tmobileuspublic.wdsglobal.com/
thanks,
i've tried that, using several different windows mobile devices listed under the HTC menu, but each different configuration that they offer yields the same results.
I don't know where you're based in, but I just had that problem too here in downtown Chicago. I tried it with my Hermes, and it didn't work either. I called T-Mobile and they said something about a "global disruption" to their data network. Not sure what exactly that meant but it works here in the Gold Coast, about 15 minutes north of downtown.
oh, i see.
well i guess i'll give them a call tomorrow, and see if i can get it to work with their help. thanks for the info, now i'm kind of relieved it's not something broken on my end. haha.
aymonius said:
oh, i see.
well i guess i'll give them a call tomorrow, and see if i can get it to work with their help. thanks for the info, now i'm kind of relieved it's not something broken on my end. haha.
Click to expand...
Click to collapse
Depending on what data plan you have ($5.99 T-Zones or $19.99 Total Internet) you may need to change your server and/or proxy settings. By default, the HTC Connection Wizard sets the "T-mobile Data" connection to wap.voicestream.com, so you may need to change that.
Log in to your my.t-mobile.com and check your services to see which one you're using. Then do a search here on XDA for your service (T-Zones or Total Internet) and you'll find the settings you need.
thanks. i looked all that up and it turns out that i was supposed to soft reset it after i set things up, which i did not know about, so i didn't do. i also found a cab file for the t-zone settings, which might have helped too. for some reason weather doesn't update with the edge network though, and i don't know why. any clue?
thanks again.

[Q] MIUI without data?

Hey everyone
i'm pretty new to the whole nexus s scene, as i've had this device for about a week now. I've rooted my phone successfully and i'm running MIUI's latest ROM..1.8.5 i believe. Now for the problem..
For some odd reason I'm unable to connect to my 3G network at all (yes, data is enabled in the settings, and set to 3g prefered/2g/only 3g..still nothing). Usually there'd be that green "3G" on top bar of my screen, but it doesn't show up. Now i rely on wifi to go online, which isnt a problem...but it feels like my money's being cheated if i dont use my data in occasional situations. I've tried flashing it again and again, but no results. I've flashed my phone to the Oxygen ROM, and the little 3G icon appeared, indicating that data is enabled (i forgot to actually check if it worked LOL). I haven't found anyone else experiencing this problem with MIUI, but i've found threads on them having some sort of difficulty with their data. If anyone could help me out, or direct me to a thread that has a possible solution, i would really appreciate it ~ thank you in advance.
Also, I'm on Fido.....if that helps.
I'm on the latest miui and I don't have that issue try toggling the airline mode to see if it will kick it in. If not really download the Tom and do a clean install see if that works.
Sent from my Nexus S 4G using XDA Premium App
hey, i've tried toggling the airline and it doesn't help. also, what do you mean by "the Tom"?
What happens when you try to connect with just 3G (what type of error do you receive)? Miui's stock 3G icon is white
Also, I think the other gentleman meant to spell ROM
Sent from my Nexus S 4G using Tapatalk
RawrBell said:
hey, i've tried toggling the airline and it doesn't help. also, what do you mean by "the Tom"?
Click to expand...
Click to collapse
He meant rom, auto correct changes the word rom, I think you need to wipe and reflash the rom.
hey, i've just tried reflashing the rom...and still no 3g ): !
also, when i enable data, and set it to 3g..there's no error. there's simply no "3g" icon on the top, and i can't connect.
Did u try manually inputting your apn? Sometimes providers don't push the settings to you
what exactly would i put in for my apn? sorry, total noob here :/
Go to menu>settings>system>mobile network setting>access point names. Do u have an entry there? You should. If not, you need to check with your network provider for the settings.
i've just tried putting in the APN settings (copied the stuff from the APN settings when 3g works on the oxygen ROM). is there anything else i havent filled in and should? cuz....it still doesnt work
Not really. Create it, fill it, save it, choose it and restart. Should work, it always did for me
How's the battery life on that rom
Seems ok to me. 3g uses alot of juice since the service is crappy in my country. Otherwise, best rom I tried
dang :/ still nothing... i've noticed something though. when im on my oxygen rom and search for networks..the option "Fido" pops up. when im on MIUI, the option "Rogers Wierless" pops up in the place of "Fido" .___." that may have something to do with it...
Same problem here on desire s.
When I try to change the apn setting I get a force close.
Cheers, Cor

Gold_C DFT Error reporting

Hey all;
I saw some DFT clutter on some other ROM threads. It was suggested to make a new thread. I have permission from Mwang to make an error reporting thread so... here it is. Also... for all those who don't have DFT's ROM for the Gold_C you can PM Mwang for download instructions. I am working on getting permission to put links and dl instructions on this thread as well so look for updates. Thank you.
Has a newer version of the DFT rom for GOLD_C been released? One major bug is that wifi mac address changes with every reboot.
Still a badass rom!
N_ZzZ said:
Hey all;
I saw some DFT clutter on some other ROM threads. It was suggested to make a new thread. I have permission from Mwang to make an error reporting thread so... here it is. Also... for all those who don't have DFT's ROM for the Gold_C you can PM Mwang for download instructions. I am working on getting permission to put links and dl instructions on this thread as well so look for updates. Thank you.
Click to expand...
Click to collapse
-Some programs you cant see well unless you have the theme on dark, I think I read somewhere that it was a common bug in his wp7 roms.
-Maybe not a bug but an issue (If Mwang used sprints rom as a base) the sms bug that limits you to 160 characters per text is present like in the sprint rom
It is soo much better than the the official sprint rom tho
I have been having data connection issues. I will have full service and my data connection on and apps will say I have no connection. I have tried to update my network connection and prl and this continues to be an issue. For whatever reason I can usually go into internet explorer and go to a website and that will work and then return to an app I was having issues with and then the connection works. Seems really strange to me. Anybody else else having similar problems? Any solutions out there?
Sent from my PC93100 using XDA Windows Phone 7 App
I can't connect with zune anymore. Two hard resets and two reflashes later my phone is still not recognized by zune software.
I've been having issues sending MMS quite often. To fix it every time I have to go to Settings -> Cellular -> Change Network Profile & Change PRL. That and I have had a handful of random freezes occur all while in the Messaging Hub.
Zero9930 said:
I've been having issues sending MMS quite often. To fix it every time I have to go to Settings -> Cellular -> Change Network Profile & Change PRL. That and I have had a handful of random freezes occur all while in the Messaging Hub.
Click to expand...
Click to collapse
I had issues with mms too a hard reset resolved those
Is a newer version coming out soon for the Gold C that corrects the wifi mac issue?
N_ZzZ said:
I have been having data connection issues. I will have full service and my data connection on and apps will say I have no connection. I have tried to update my network connection and prl and this continues to be an issue. For whatever reason I can usually go into internet explorer and go to a website and that will work and then return to an app I was having issues with and then the connection works. Seems really strange to me. Anybody else else having similar problems? Any solutions out there?
Sent from my PC93100 using XDA Windows Phone 7 App
Click to expand...
Click to collapse
I have had something similar, although I've found that the internet is working still but incredibly slow, even when connected to Wi-fi, it seems like even with Wi-fi on, the phone prefers to use the network connection. I've found that turning on airplane mode and then using Wi-fi makes the internet work fine and quick, but with both on it seems to go much slower (but not always). Other than that it seems to be working fine
HTC Arrive ROM ???/Issues
I love this ROM, much better then stock but when I am on a call and the computer voice says" press 1 for xxx press 2 for yyy" I press the buttons but the system doesn;t respond like I didn't press anything at all. Also the Speaker volume seems to be 1/2 as loud. Last but not least is there a GPS program I can d/l? I used navigator all the time but since this ROM doesn't come with it I don't know what to use.
Thanks for your time!
Q
quantum3 said:
I love this ROM, much better then stock but when I am on a call and the computer voice says" press 1 for xxx press 2 for yyy" I press the buttons but the system doesn;t respond like I didn't press anything at all. Also the Speaker volume seems to be 1/2 as loud. Last but not least is there a GPS program I can d/l? I used navigator all the time but since this ROM doesn't come with it I don't know what to use.
Thanks for your time!
Q
Click to expand...
Click to collapse
you can search for "TeleNav" in the market, "Waze" in the Bazaar, or you can search online for "Nokia Drive" xap where you would have to deploy from your computer. I'm not going to link to the Nokia Drive as I don't know how legal it is to do so.
quantum3 said:
I love this ROM, much better then stock but when I am on a call and the computer voice says" press 1 for xxx press 2 for yyy" I press the buttons but the system doesn;t respond like I didn't press anything at all. Also the Speaker volume seems to be 1/2 as loud. Last but not least is there a GPS program I can d/l? I used navigator all the time but since this ROM doesn't come with it I don't know what to use.
Thanks for your time!
Q
Click to expand...
Click to collapse
If you didn't yet, try a hard reset. That solved all my issues. I should have remembered that from the TP2 days...
I too am having issues with the internet speeds. My phone is constantly going into 1x. i can have full bars and it still goes 1x. even with Wifi on the phone still tries to use the cellular data and if that says 1x well its slow as hell. I have re flashed the rom and also done hard resets a few times, it didn't fix it for me, i mean it works great for a little while than the same problems persist.
According to what people are saying in ansar rom, it has the same problem with the connectivity. Hopefully there will be an update to fix this.
Another bug is that picture mail fails 95% of the time. i found that if you switch wifi off and than do a reset it usually works for a few times.
I wonder if we can fix our DATA issue if we input the APN settings into the rom. I used to run droid on my tp2 and we had to configure the APN for things to work as expected. I have searched around google and such and cannot find any working APN settings. Does anyone know of any that will work or have tried it?
Hey guys first off happy Easter to everyone! Secondly, I think I might have found a workaround for the WiFi cutting out on DFT sprint rom for the arrive. If you are on this rom and you have sprint well than you probably noticed the phone always going into 1x and than the WiFi taking forever to load. I had seen a post about shutting off cellular data and that was suppose to help. Well, I tried that and it worked for a little bit but than it stopped.
What I found is that if you change the network setting from automatic to home only that the WiFi no longer cuts out. The phone still says 1x but my WiFi hasn't cut one time and beforehand it was constantly working slow and or not working at all. Also, every picture mail that I have tried to send has went through without a single fail which it was a real pain in the butt to get one to send before. I haven't done too much testing as to whether the phone works better when not in WiFi but since I'm always in the office or at home, I'm always connected. But at least now it's working much much better!
Reg Settings for EVDO (3g is slow)
I have, like others, had similar issues. Also, after updating to the rom i noticed that the 3G speeds have dropped significantly (WIFI off).
I am clocking in at ~300k as opposed to 1.2Mb before even though the phone has 5 bars and EV.
I am not sure if this will provide any insight, or if I am even on the right track/know what i am talkin about, but if i browse the registry to
"HKLM\Comm\Cellular\DataSpeed"
There are settings for only 1xEVDO. Is this right?
What about EVDO rev A?
Thanks in advance for any input!
microfirmz said:
I have, like others, had similar issues. Also, after updating to the rom i noticed that the 3G speeds have dropped significantly (WIFI off).
I am clocking in at ~300k as opposed to 1.2Mb before even though the phone has 5 bars and EV.
I am not sure if this will provide any insight, or if I am even on the right track/know what i am talkin about, but if i browse the registry to
"HKLM\Comm\Cellular\DataSpeed"
There are settings for only 1xEVDO. Is this right?
What about EVDO rev A?
Thanks in advance for any input!
Click to expand...
Click to collapse
Doesn't seem like that's what that key is for according to this thread:
http://forum.xda-developers.com/showthread.php?t=907971&page=52

[FIX] ICS data drops for T-Mobile Users

Updated: instructions Aug-10
Updated: New file optimized for US T-Mobile New instructions - Aug-15
If you have data drops after this please communicate with me. I hate it when someone tells me this fix sucks and then never answers my troubleshooting questions.So as far as I know they have a separate issue!
This is a more public post of what has been going on in the Paranoidandroid developmet thread, but this fix works for all T-Mobile ICS ROM users.
The APN list I have provided here is a US T-Mobile APN list built from the original I pulled apart on the original T-Mobile ROM. Now...this means IT WILL NOT WORK for users on other carriers or in other countries. I might work for the Canada Wind Mobile users as well.
What this did for me and the other T-Mobile testers: It removed the data drops completely for myself and the original testers. This whole data drop thing (and why many others never see it) may be a issue with the "Simple" mobile APN in the default list. Simple uses the same towers as T-Mobile but with different authentication.
What that means is T-Mobile users get small drops as the phone tries to connect to the Simple (which looks like T-Mobile to the phone) towers and then fails because the SIM is not authorized on Simple. Then the next APN in the list "T-Mobile US" is used and connected.
This is an example for others with data drops: Seeing as I have no idea if non-T-Mobile users have ever experienced this problem, I have no idea if trimming down the APN list to include only your carrier APNs willl make any difference. But a smaller APN file could not hurt. The ROM builders must keep the larger file in thier builds to ensure all users everywhere can connect to their carrier. Bad thing is that most of this list is filled with carrier discontinued APNs (Mergers, acquisition, etc) but some may be needed to support older SIM cards.
I would love to have feedback though. Trimming the APN list and importing the settings from the original APN file was a little weird because it was from an older format, but you just use the same format as the new APN list. Even the new included default APN list does not follow the version 7 rules completely. Most important part is the type= identifier in each APN. This defines what functions the APN have. (Default, MMS, SUPL, DUN)
Instructions
CWM Flashable Download: https://dl.dropbox.com/u/14980920/tmobile_apnfix.zip
Step 1: download the zip to your SDcard and reboot into Recovery.
Step 2: install the zip and reboot
Step 3: Wipe Dalvik cache is not doing this while flashing a new ROM
Step 4: verify that "Simple" is not in your APN l list - System Settings > Wireless and Networks > More > Mobile Networks >Access Point Names (If it is then delete it)
Troubleshooting
Sudden horrible data connection issues: Verify the permissions on file "/etc/apns-conf.xml" are 644. Some have had the permissions randomly change on this file, not sure how or why.
The APN list this modifies is only a reference file to the APN function deeper in the phone. That is why Simple can reappear after the flash is applied if you did not apply this during a fresh install of a ROM.
Is there any way you could just post what specific changes you made so we don't have to use the flashable file?
Sent from my LG-P999 using xda premium
I find my data stays well using PA build5. I am watching new builds to see for changes that come!
Doesn't appear to "fix" the data drop for me on paranoid build 7, the data appears to kick back in faster but it still is dropping and leaving my GPS struggling to get a lock and messenger booting off due to the other known things to make the data drop
Sent from my LG-P999
xBkKx said:
Doesn't appear to "fix" the data drop for me on paranoid build 7, the data appears to kick back in faster but it still is dropping and leaving my GPS struggling to get a lock and messenger booting off due to the other known things to make the data drop
Sent from my LG-P999
Click to expand...
Click to collapse
Where are you getting data drops at, I mean what activities are you doing or what programs are you using when this happens? And does the bars change from blue/grey; or are you loosing the H/3/2 above the bars?
Sending MMS and anything that uses the GPS, both, goes gray and lose data icon
Sent from my LG-P999
So I flashed this and can see no discernible difference in my APN list. Simple is still there, and the T-Mobile APN appears unchanged. Also still experiencing the data drops at the same rate
Sent from my LG-P999 using xda premium
Likewise, still having data drop issues, not much of a difference from what I can tell
Sent from my LG-P999 using xda app-developers app
Ok, if the Simple APN still appears in your list it is a carry over from the previous settings. Just delete that APN from your list and it should not show up again. I think I remember that happening as well and forgot to mention some had to manually delete it. I will update the OP.
rtotheichie said:
Is there any way you could just post what specific changes you made so we don't have to use the flashable file?
Sent from my LG-P999 using xda premium
Click to expand...
Click to collapse
You can just open the apns-conf.xml file in the zip and see the changes. I'm not going to paste it here and clutter the post up
Just to make one thing clear, as I heard it before.
When the color of the icons change from blue to grey this does NOT mean that your data drops. Blue color indicates that it's connected to Googles servers. A data drop only occurred when there's no G/E/3G/H icon anymore.
Sent from my LG-P990 using xda app-developers app
xBkKx said:
Sending MMS and anything that uses the GPS, both, goes gray and lose data icon
Sent from my LG-P999
Click to expand...
Click to collapse
First, delete the Simple APN and retest, Simple does not show up to begin with when using this process: Flash ROM, Gapps, BBfixes if needed, APN fix if needed. Flashing the APN fix on an existing build may not clear the Simple APN from the phones memory at first reboot.
I was hoping to avoid explaining this but here is the thing with the grey/blue bars because the APN function was complicated as it is. Tonyp and a few others had discussed this offline. The blue/grey bar thing gives greater granularity to Google Services connectivity at the expense of making us think we may have lost cellular data.
My bars turn grey when in Google Maps and when sending/receiving MMS
In most ICS builds:
Blue Bars = Connected to Google services / cellular data is connected
Grey Bars = Not connected to Google services / data is still connected
This color changing thing never happened in my original ROM
My T-Mobile ROM never changed colors so I never would have know if or when Google servers lost connection. Don't know what to tell ya as I don't have anything else to go off of.
You are not really losing data because you will notice the data activity still happening in the signal bar overlay (the up/down arrows). The MMS still goes through and the Google maps application still updates the map data as you scroll around. If this is not the case for you, then something else is going on. Tonyp discovered a larger problem in the framework.apk that he ended up patching and I believe includes in the newest build, that resolved a GPS-data problem. The fix allowed the radio to recognize a data connectivity drop and reconnect. But if it reconnects to Simple first, then you still get a pause in connecting back to the TMobile APN until Simple fails.
I will have to add this to the already long OP.....now that I am out of breath.
Alright, so I flashed this, deleted Simple, and I will say it seems to have fixed a problem I had with receiving MMS. thanks for this!
Sent from my LG-P999 using xda premium
Thanks OP, tested and confirmed working. Props for putting the explanation up as well.
Sent from my LG-P999 using xda app-developers app
Simple isn't in my APN list, I flashed the zip from OP, my Data is dropping the same it just starts up a lot faster but it is still dropping. Maps will stop updating for a few seconds, no data or buffer, bars, arrows, and data icon go away. Instant Messenger always kicks accounts off.
Sent from my LG-P999
put genesis stable 1 on my phone to try this and it flashed fine, left simple listed as an APN so i deleted it
was able to download from the browser but when i went into the Play Store i couldnt download anything, even after clearing the app data. so i reflashed, installed this fix, same thing. did not check mms messages though, too put off about the play store not working
dodgefan67 said:
put genesis stable 1 on my phone to try this and it flashed fine, left simple listed as an APN so i deleted it
was able to download from the browser but when i went into the Play Store i couldnt download anything, even after clearing the app data. so i reflashed, installed this fix, same thing. did not check mms messages though, too put off about the play store not working
Click to expand...
Click to collapse
I'm back on Domination build 80. I wiped cache/dalvik, flashed the APN fix, fixed permissions, rebooted, deleted Simple, rebooted, wiped cache/dalvik again, and then rebooted. I went to the Play Store on my desktop browser, chose to install YouTube, it pushed to my phone just fine and it appears to be downloading with no issue (aside from the fact that phone signal at my job is so bad tha it's literally worse than dial up...). I haven't had a chance to try MMS because it's usually a headache trying to receive pictures while at work so I don't even want to try.
Man I am struggling trying to think what would be happening for you. I have blue bars off/on during maps...showing intense data usage...but always get map data. The Play Store, I have browsed all around it, watch videos, downloaded apps, updated apps...I don't get any drops. I'm going to have to ask for some logcats from the two of you here to try to help. What chat program are you using, maybe I'll try it and see what it does for me.
Please help me by providing the following also, as I really do want to figure this issue out for all users if possible...
Which baseband are you on?
What RIL are you on? ( Use getril in the store, I want to know if this could be a BB thing and if you have matching BB/RIL)
Thanks for the help!
Heads up, I have noticed that fixing permissions after applying this package can screw up the permissions on the /etc/anps-conf.xml file. This causes major data connection issues. Either apply the apn fix again, after fixing permissions, or change the permissions manually to 644.
Sent from my LG-P999 using xda app-developers app
New file available
From the few people that have given me feedback, thank you!!! As a result the OP has been updated with a new file to download. This should help the few that did not see improvements with my original posting.It also should work for Canada WIND users but I need tester feedback.

How to fix "No service" on T699?

Hello.
My T699 started to switch to EDGE, I couldn't make any call. Tried hardreset (wipe all data from recovery menu), it helped for a moment, but after that it got even worse (can't find any mobile network).
Please help. How do I fix this?
Tacis said:
Hello.
My T699 started to switch to EDGE, I couldn't make any call. Tried hardreset (wipe all data from recovery menu), it helped for a moment, but after that it got even worse (can't find any mobile network).
Please help. How do I fix this?
Click to expand...
Click to collapse
You didn't change SIM-card and/or location? Maybe your modem is dying.
Switched to GSM only. Seems to work that way for a month. But I would really like to get 3G back. Any suggestions?
I had a problem like that once after flashing a rom and messed with my access point names and I was able to get 3G/4G after that. I found the info via searching, I believe.
settings -> more settings -> mobile networks -> access point names
I made a new one and it worked for me. I looked up settings online and tried a different one than what was in there. I'm still using epc.tmobile.com but most of my searching told me to use fast.t-mobile.com, iirc. It's been a long time but I think making the epc one is what fixed my issue. It's worth a try.
It can be too complicated to search through the network access points. Take T Mobile for example. They have literally hundreds of available networks you may find listed, but they're quite different. Rather than trying to figure all that out, and it really sounds like matters got complicated for you, I would just flash in the original software. The firmware for any Galaxy S Relay I believe should currently be the same as T Mobiles version running Android 4.1.2. The Build number for that is, T699UVBOH1. You can find the firmware here, https://samsung-firmware.org/downlo...-T-Mobile-__/8k20/TMB/T699UVBOH1/T699TMBBOH1/
Take note that the firmware is listed as Android 6.0.1, which is incorrect. I have no idea why it's listed as such on an official Samsung page and have written to them about the error. Flash it to your device via Odin3. For this device I use Odin3.07 or 3.09.

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