4G problems after lollipop upgrade sm-g900a - AT&T Samsung Galaxy S 5

I recently upgraded my AT&T Galaxy S5 SM-G900A (using it on Metro PCS) from stock 4.4.2 to 5.0 using Odin. Everything seems to be fine (besides the fact my dumbass didn't backup my phone prior to the upgrade, thus resulting in the loss of all my texts, voicemails, notes and memos, and locally stored photos, but that's a different problem) except that my 4G will no longer stay connected for very long. In order to activate my 4G, I have to make a call and wait until the 4G symbol appears before hanging up. I then have use of 4G, but it only stays for a few minutes and always goes away when I lock my phone. Playing with airplane mode does nothing, and yes I've done the wipe partition cache, ensured mobile networks are enabled, rebooted the phone several times, removed and replaced the sim card several times, did a system restore, and even reinstalled 5.0 via Odin, all with the same results. I've also tried downgrading back to kit kat, but odin fails the downgrade every time. Any ideas?

Smack it a couple of times with a ball peen hammer... worked for me! :cyclops:

A ball peen isn't covered under warranty, but thanks anyway.

Related

data drop, at&t

Funny thing happened on Friday 10am (14:00utc time), International note, stock 4.04 with the hardcore speedmod k3-15 kernal
I had used my phone for email, couple phone calls, checking a few websites then all of a sudden, I noticed a fail to send an email,
then I couldn't get any websites to respond. Tried everything I knew of to fix it.
When connected to wi-fi, everything web related worked, just not on the HSPA+, 3G, or 2G radio. Phone, texting worked without
any issues. Pulled battery, Sim, SD card, let it search for networks...nothing worked.
Stopped by an at&t store....first thing the drone said was "it's not an at&t phone"....told him it worked perfectly for the 11 months
I've had it. He popped the back cover, pulled the sim, said "here's your problem, this is an old outdated sim card (old blue one with
the orange 3g logo), he installed a new one (which I knew wouldn't fix it) and it still didn't solve it. He looked at my account and said
the IMEI numbers on the account didn't match the phone, so he changed it on the account. Still no good.
He called and had them "re-provision" the phone...still no good. He gave up, told me to call 611.
Well, after telling the surprisingly pleasant dude on the phone yes I know it isn't an at&t phone, yes it is unlocked, yes I got it
off Amazon...he tried a few things & gave up. He said someone would call me later after he checked to see if there were any
issues with Android & their system today.
I turned the data off on the phone, since it was trying to connect all the time, running my battery down and just did without data
the rest of the day. Around quitting time for work, I turned the data back on and now everything is running normally.
Ok, now that I've gone through all of that....any guess as to what happened to cause it to work one minute, then just stop data,
then work hours later?
I had heard that the carriers were banding together, to stop stolen phones from working, and wondered if maybe since my phone
isn't a "carrier phone", and, since my IMEI number on their system was still set for the old Dell Streak, perhaps my phone got
caught up in their blocking pool of numbers?

[Q] HELP: Lost cellular data and service

Anyone have a fix for this? On Verizon and after almost 4 weeks I have lost my cellular service and data. I noticed when I went to check up on my phone right now that it was finishing a boot-up screen and then never had any bars at the top. Dug deeper and found no service at all. Wiped dalvik and cache and seemed to be bars for under a second and then gone. I am on sensei kernel and am thinking about doing a factory reset and reverting to stock kernel. But I really don't want to lose the benefits it came with.
rmx36 said:
Anyone have a fix for this? On Verizon and after almost 4 weeks I have lost my cellular service and data. I noticed when I went to check up on my phone right now that it was finishing a boot-up screen and then never had any bars at the top. Dug deeper and found no service at all. Wiped dalvik and cache and seemed to be bars for under a second and then gone. I am on sensei kernel and am thinking about doing a factory reset and reverting to stock kernel. But I really don't want to lose the benefits it came with.
Click to expand...
Click to collapse
Well, this is odd. After a month of perfect service, I suddenly cannot get LTE, only 3G. Even nandroids of prior ROM's will not boot into LTE. Is VZW LTE down or should I do a total clean reformat? i do have factory images and everything is backed up. Just a pain.
Very strange. I was flashing various ROM's (CM 12 based - am testing for someone) and at one point pulled out SIM and replaced it. I checked to make sure it is seated right since then. Again, no longer get LTE.
Was on Sensei kernel as well. Let me try flashing stock kernel from ROM first. EDIT: NOPE! Flashing the stock kernel from the ROM did not do it. Looks like total reformat/flash is next!
markwebb said:
Well, this is odd. After a month of perfect service, I suddenly cannot get LTE, only 3G. Even nandroids of prior ROM's will not boot into LTE. Is VZW LTE down or should I do a total clean reformat? i do have factory images and everything is backed up. Just a pain.
Very strange. I was flashing various ROM's (CM 12 based - am testing for someone) and at one point pulled out SIM and replaced it. I checked to make sure it is seated right since then. Again, no longer get LTE.
Was on Sensei kernel as well. Let me try flashing stock kernel from ROM first.
Click to expand...
Click to collapse
I just got my Nexus 6 and I am also on Verizon and had the cell coverage drop too. I backed up my apps with titanium backup and did a factory reset and signal came back. I only had it for a day and went to Canada and on my way back to the US I noticed the cell bars were gone. I was just rooted and boot loader unlocked and otherwise stock. I read online that others had this issue when they got to places in the US that had little or no signal. I also noticed that under cellular network settings it loads up with Global under the preferred network type even though it has an option for "LTE (recommended)" and if you choose LTE, global is never an option again until you do a factory reset and it loads with it pre selected. With global selected it works perfectly with calls and LTE, so not sure what that means or if my selecting LTE made it drop the signal after going back from Canada.
Yep, total flash of factory image fixed it. Sigh. Early enough in the day for me to get everything set up again.
Same. About to do it too... I've done too many factory resets with this already. Kind of annoying.
I am in the same boat. Had no problems until I flashed bliss 1.5 then was stuck on 3g. Tried a clean flash of Slim and still stuck on 3g. I will try a stock rom but I am not very hopeful at this point. It's looking a like a reformat here as well :/
Ended up having to format everything and start from scratch again. I'm running a stock ROM now and in weary to try another cm ROM
Don't know if it'll help, but try LTE Discovery app in the Play Store. I use it from time to time to reset my data connection.
Having the same issue, running CM12 daily, have been for a week or so. Midday today it drops LTE, 3g data was working, then a few minutes later to no data. I didn't change anything, nothing new installed. I did reboot the phone at some point before this but that is all...
My only fix was to backup via trwp, restore stock rom, factory reset, reboot & let sim activate, then restore cm12 via twrp... it's a 20-30 min fix all said and done.... pita
Maybe its something Verizon is doing, because I didn't change anything and then next thing you know no data. I hope it's a simple fix for CM12 but I see this popping up more the last few days. Hopefully someone will figure it out. I like CM and prefer it over stock but I am not going to do this multiple times a day just to keep CM...
lohonda said:
...and if you choose LTE, global is never an option again until you do a factory reset and it loads with it pre selected.
Click to expand...
Click to collapse
I just checked and global is still an option for me. I've bounced back and forth, looking to see if anything changes..
Same thing has happened to me last night, lost connection to VZW cell and data. Looking at the field test menus, it seems like the SIM/device understand GSM but NOT CDMA anymore. So I believe the issue has something to do with that. Tried everything, but will nuke and repave most likely....also lost Global as well. and LTE Discovery shows GSM stuff nothing for CDMA
Tried the SIM in another device and it works so its not the SIM.
OK I tried a world of things to recover like some of you may have....its something in Userdata because if I flash everything but userdata it wont work. I am going to try and recover from the backup I had before this happened to see if that works....otherwise rebuild from scratch
will post back
UPDATE: So restoring a backup seems to be ok once you get the SIM back.
Having the same issue over here as well... After a month or AI of having the 6, now I randomly drop service where I would normally have full LTE. I almost NEVER get LTE now and am at most on H with a couple bars then it drops out again. Have also.noticed WiFi connection is very shakey.
Any one find a fix?
I had an issue where i couldnt get my phone to connect any network. Took me long rime to realise, that entering my PIN-number too fast caused the issue xD it unlocked the sim, but didnt let me connect any network... Dunno if this helps anyone, but definetly the most cryptic issue I've ever had.
th3g0d said:
I had an issue where i couldnt get my phone to connect any network. Took me long rime to realise, that entering my PIN-number too fast caused the issue xD it unlocked the sim, but didnt let me connect any network... Dunno if this helps anyone, but definetly the most cryptic issue I've ever had.
Click to expand...
Click to collapse
Troubleshooting my wife's N6 here. Your PIN issue doesn't make sense to me because the phone should be connected to the carrier when locked. Are you talking about WiFi? Because that should be connected too when locked unless settings have been changed from their default (ie, turn off wifi when locked/asleep or something)
quidpro said:
Troubleshooting my wife's N6 here. Your PIN issue doesn't make sense to me because the phone should be connected to the carrier when locked. Are you talking about WiFi? Because that should be connected too when locked unless settings have been changed from their default (ie, turn off wifi when locked/asleep or something)
Click to expand...
Click to collapse
I'm talking when you turn on your phone and it asks for pin number to unlock your sim. Some how it seems that if you enter your pin too fast, it bugs the phones radio somehow and you can't connect to your carrier but if you wait like 5sec before entering the pin, it connects to the carrier and the (!) Mark goes away. Try rebooting the phone and see if it helps? Even I think its a weird issue
Edit: OK, just pinpointed MY issue. I have to wait for the "no service" text to change into "emergency calls only" before entering my pin or I don't have any service just the exclamation mark :/
th3g0d said:
I'm talking when you turn on your phone and it asks for pin number to unlock your sim. Some how it seems that if you enter your pin too fast, it bugs the phones radio somehow and you can't connect to your carrier but if you wait like 5sec before entering the pin, it connects to the carrier and the (!) Mark goes away. Try rebooting the phone and see if it helps? Even I think its a weird issue
Click to expand...
Click to collapse
Thanks. I told her about it and she will give it a try, or just remove the pin altogether as a test. It is a weird issue. She is missing important calls from her elderly parents at night and it is rather frustrating. Turning wifi off also seems like a bad fix.

SAMSUNG CARRIER SMS/4G Issues

I recently got a new phone from AT&T. I haven't contacted them as I haven't felt it necessary yet. After recently switching from an iPhone 4, I love Android. I quickly rooted it with the Ping Pong method and installed apps such as Busy Box, Greenify, Nova Launcher, Clock Sync Adblock Plus, System Tuner, SD Maid, Titanium Backup, Uninstall, and etcetera. I listed almost all root applications due to it may being a problem with that. My phone worked fine for a while. I noticed it stopped working after some calls stopped coming through as well as texts. Randomly, I see that my texts don't go through, but after a quick restart it seems to work fine. I was wondering if there is any way of getting logs to help someone out there figure this out for me. If unrooting via SuperSU and then factory wiping my device would work please let me know. If there is any information I can provide you I will. The phone worked for the first week fine. Restarts seem to fix the issue until around ~6 hours of time using the device. It mainly sits next to me at my desk.
SMS doesn't go through or receive. Phone calls are not received (Have not tried outgoing). Cellular Data (4G/LTE) does not work.
--Edit:
I have frozen the OTA notifications from wsync. I also remove some bloatware thanks to System app remover (ROOT) by Jumobile. It gives you things that are not CRUCIAL to your system to remove. I removed a few things. Nothing relate to Samsung.
I'd make a backup backup of the phone using your favorite method (I seem to remember that titanium can do this), and try a factory reset to see if that fixes your problem. AoN
anneoneamouse said:
I'd make a backup backup of the phone using your favorite method (I seem to remember that titanium can do this), and try a factory reset to see if that fixes your problem. AoN
Click to expand...
Click to collapse
Well... Umm. dm-verify verifaction failed... So I'm guessing that I "bricked" my device. Guessing I have to plug it into my pc and do a flash somehow. Any info?
--Edit: Booted into my device with same settings. However I cannot do a factory restore as it always says dm-verify verification failed.
Beyond my knowledge. If the phone still functions, un freeze / restore all the system stuff you disabled, try again? But I'm just guessing. AoN
Use Odin to flash the factory OE2 firmware via PC.
If you're still having issues it may be a faulty SIM card.
Sent from my SAMSUNG-SM-G920A using XDA Free mobile app
MrBaltazar said:
Use Odin to flash the factory OE2 firmware via PC.
If you're still having issues it may be a faulty SIM card.
Sent from my SAMSUNG-SM-G920A using XDA Free mobile app
Click to expand...
Click to collapse
Alright, I flashed everything. Re-rooted (I tested before root if the Cellular Data/Messages worked. Cellular data did not, but messages did (and haven't had issues after root). The cellular data still DOES NOT work. I live in a location where LTE is supported. Any info?
LordNature said:
Alright, I flashed everything. Re-rooted (I tested before root if the Cellular Data/Messages worked. Cellular data did not, but messages did (and haven't had issues after root). The cellular data still DOES NOT work. I live in a location where LTE is supported. Any info?
Click to expand...
Click to collapse
This may be s silly question but have you tried toggling the 2 switches under mobile networks/mobile data off then on? One of them is enhanced 4G LTE services. I read somewhere that this might help.
Message center using the right number? 13123149810
jondroid2 said:
This may be s silly question but have you tried toggling the 2 switches under mobile networks/mobile data off then on? One of them is enhanced 4G LTE services. I read somewhere that this might help.
Click to expand...
Click to collapse
Tried every single tab under that
LordNature said:
Tried every single tab under that
Click to expand...
Click to collapse
Call AT&T tech support and have them provision your data on the back end again. Just explain that everything works except your data. This can happen if there is a data block on your line or if someone used the my AT&T app to turn off data for lines on the account.
Are you able to make phone calls?
Do you see the 4G LTE logo at the top when wifi is turned off?
Sent from my Galaxy S6 on AT&T
MrBaltazar said:
Call AT&T tech support and have them provision your data on the back end again. Just explain that everything works except your data. This can happen if there is a data block on your line or if someone used the my AT&T app to turn off data for lines on the account.
Are you able to make phone calls?
Do you see the 4G LTE logo at the top when wifi is turned off?
Sent from my Galaxy S6 on AT&T
Click to expand...
Click to collapse
4G LTE logo does not display when wifi is off.
Phone calls work.
LordNature said:
4G LTE logo does not display when wifi is off.
Phone calls work.
Click to expand...
Click to collapse
Call at&t. I'm almost sure it's not on your end.
Sent from my Galaxy S6 on AT&T

Sim card disconnected from network HELP!

I updated to marshmallow 6.0.1 a few days ago and the phone was perfectly fine. Just yesterday I factory reset the phone because I've read online the battery is better after that so I did it and restore my data with smart switch after. The sim card was working last night. I fully charged the phone and unplugged it and left it there until morning. When I woke up i noticed that the phone is stuck in emergency calls only. So i just waited the whole day for it to reconnect it self because this happens when i lose service (i rarely do at home but sometimes). Till now I still cannot connect to a network. I tried rebooting, resetting the network settings and selecting the available network providers from the phone search. after doing the search it did not include my own carrier (mobilicity). I am in Canada and the phone is the Canadian variant. The phone search showed telus, bell and wind and cdn roaming. I reinserted the sim card no luck. I can try to factory reset but I doubt it would work. Any one can help me out????
BTW the phone is UNROOTED no mods or anything done to it.
Ohhdayumm said:
I updated to marshmallow 6.0.1 a few days ago and the phone was perfectly fine. Just yesterday I factory reset the phone because I've read online the battery is better after that so I did it and restore my data with smart switch after. The sim card was working last night. I fully charged the phone and unplugged it and left it there until morning. When I woke up i noticed that the phone is stuck in emergency calls only. So i just waited the whole day for it to reconnect it self because this happens when i lose service (i rarely do at home but sometimes). Till now I still cannot connect to a network. I tried rebooting, resetting the network settings and selecting the available network providers from the phone search. after doing the search it did not include my own carrier (mobilicity). I am in Canada and the phone is the Canadian variant. The phone search showed telus, bell and wind and cdn roaming. I reinserted the sim card no luck. I can try to factory reset but I doubt it would work. Any one can help me out????
BTW the phone is UNROOTED no mods or anything done to it.
Click to expand...
Click to collapse
u did all possible solution before factory reset
unfortunately u should do it But do it with Kies
perform firmware repair
:good:
Geeks Empire said:
u did all possible solution before factory reset
unfortunately u should do it But do it with Kies
perform firmware repair
:good:
Click to expand...
Click to collapse
I did some research I think there's something wrong with my Sim card as I can't scan my network through the manual scan. So I'm gonna replace it tomorrow and see if that fixes it. If not then I may just switch to another phone.
Sent from my SM-N920W8 using XDA-Developers mobile app

Cellular Data connected, but not working? Help!

Hey all, still using my budget 2014 device in 2018 and this thing is nearing its demise. However, I need one more favor from this community.
After using it unlocked for ~3 years, through cm13 and LOS, I've finally gotten a shared cellphone plan from my parents this past summer. Calls, texts, and data were working great when I popped in the sim. Keep in mind, my Titan was on Ressurrection Remix Oreo when I first got the AT&T sim. A few days after getting the fresh new sim I decided I wanted to go back to RR Nougat, since Oreo was too slow and I like Nougat much better. I flashed the RR Nougat ROM (with the SIM still inside if that makes a difference) with TWRP, then gapps and magisk as usual. Booted it back up, and found out the data does not work.
The issue here is that the Data shows as connected on quick settings and Data Usage, but when I try to go to google on my browser it does not use the data. Same thing for Reddit, Instagram, etc, they all respond as not connected.
I've tried everything I could think of to fix it: APN settings, network settings reset, cleared dalvik and cache, reflashed roms, my parents even took me to the AT&T store to have the guy there try and fix it. He said there's nothing wrong with my account; They have confirmed my account, my number, my APNs, a signal is coming to my phone, everything is correct- it's just that my phone isn't using the data.
I can still call and send sms perfectly. But it's only one gigabyte of data (Yeah, I know) and I still would like to have the Data for emergency purposes. Any other last ideas? (Images attatched.)

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