Lost 2G/Edge data after Kitkat upgrade - Galaxy S 4 Q&A, Help & Troubleshooting

I just noticed my device wasn't switching from WCDMA to EDGE automatically.. Now I confirmed that setting the device on 2G only, will not give me any data.
Any thoughts?

bump

Give people a chance to reply mate!
You mustn't bump a thread before 24hours.
Anyway, just try flashing a different modem.
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Related

Help GS4 signal issues

Recently the signal on my phone no longer shows 3g/4g but instead 1x I know it's not where I am because my dads gs4 will have full 3g and I'll have like 1bar of 1x I have tried multiple ROMs I have also flashed MF9 radios via Odin thinking this would solve my issue but no luck their. Can someone please help me get my 3g/4g back
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Have you tried to update your prl and profile ?
Oh and are you on AOSP based ROM ? Most people tend to have lower signal and 1x more. Than when on touch wiz.
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Fixed it turned on airplane mode and then turned it off now I have 3g
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4.4 and Non-VZW carriers

These issues apply to T-Mobile users installing the current build of 4.4 (and possibly other GSM carriers but I don't have an ATT SIM to test). Motorola is aware of the issue. I read these forums pretty thoroughly and I've been answering these questions all over so I figured I'd just put them all one place. Issues as follows:
- Devices with the LTE radio active cannot send SMS
- Devices with the LTE radio active cannot send MMS (Carrier/Settings dependent)
- Devices with the LTE radio active cannot make phone calls and instantly disconnects on call attempt.
Urban Legends:
- Stock tethering does not work - I have personally tested on TMO and know it does work. Yer doin' it wrong.
Fixes
Easiest fix for now if you're on a device running 4.4 and want to... you know... be able to use your phone... is to use phone information and switch the radio mode over to GSM Only (not the auto one). This fix is a little finicky because if the phone realizes it's not running in the mode selected on your mobile networks screen it will override and turn LTE back on if you haven't selected UMTS only.
Full steps are:
Mobile network settings - Change network mode to LTE/GSM/UMTS
Mobile network settings - Select network UMTS Only
Install app linked below
Open Phone Info and select GSM Only
Phone info apk for sideload - http://www.mediafire.com/download/284l17ry2ok1yuk/Phone_info_1.3.apk
I'll update this thread as I discover more issues or as people post issues that can be replicated below.
Thank you. Finally I got the LTE turn off.
I gotta switch the mobile mode to LTE/UMTS/ gsm and select network as UMTS only. Then use phone info choose gsm only.
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vuphongkkk said:
Thank you. Finally I got the LTE turn off.
I gotta switch the mobile mode to LTE/UMTS/ gsm and select network as UMTS only. Then use phone info choose gsm only.
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Click to expand...
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when I use those settings, I only get Edge. I mean, its better than nothing, but still....
DaemonAshra said:
when I use those settings, I only get Edge. I mean, its better than nothing, but still....
Click to expand...
Click to collapse
Not all areas are refarmed for hspa+
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arcanexvi said:
Not all areas are refarmed for hspa+
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It was selecting GSM Only in Phone Info. Switched it to GSM auto (PRL) and I got HSPA+ back.
but Seriously dude. thanks for this info. I was tired of using my Moto G while my MAXX was just collecting Dust.
Edited the OP for a more clear fix. Thank you to vuphongkkk for pointing out the UMTS only.
I'm on T-Mobile and live in an HSPA+ refarmed area (NYC), but there are places I go on a regular basis that aren't refarmed. I set it on "WCDMA preferred" and voila, I have both 2 & 3G connectivity, with preference given to 3G.
I can't post links, but this XDA thread explains it in more detail I think: ... showthread.php?t=688492
Vodafone confirmed for anyone wondering.
H+ for UMTS only,
Edge for global.
No Sim adjusting at all
Just popped a sim in today. Getting LTE but really hating the call fail bug. Gotta place the call twice repeatedly to get it through
Maxx'd out Kit Kat
Update: Having major glitches when running LTE, pretty deal breaking for a full switch to tmo right now. Eagerly awaiting the new OTA to see if it fixes it. Seems to have major issues on the HSPA/LTE handoff. How did it function prior to 4.4?
Maxx'd out Kit Kat
On 4.2.2 was working fine, the phone just switch from LTE to 3g itself when you need to make phone call. But I had problem on 4.2.2 that if I connect to WiFi then it'll take awhile to get the LTE back. Normally an hour after out of WiFi range
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vuphongkkk said:
On 4.2.2 was working fine, the phone just switch from LTE to 3g itself when you need to make phone call. But I had problem on 4.2.2 that if I connect to WiFi then it'll take awhile to get the LTE back. Normally an hour after out of WiFi range
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Maybe thats the problem I was having? I just ended up with a 4.2.2 phone after my 4.4 got destroyed. LTE wouldnt work for me but I was in the house after switching off wifi...hmmm
Arcanexvi what's the best APN to use for 4.2.2? And do I have to have phone info installed or can I uninstall it? Since I changed all the settings to get hspa+ I forgot what the default settings were. =\ whoops and thanks for all your help so far
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vlcano57 said:
Arcanexvi what's the best APN to use for 4.2.2? And do I have to have phone info installed or can I uninstall it? Since I changed all the settings to get hspa+ I forgot what the default settings were. =\ whoops and thanks for all your help so far
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Click to collapse
APN: fast.t-mobile.com
MMSC: http://mms.msg.eng.t-mobile.com/mms/wapenc
You can uninstall it if you want. It's extremely small though so no reason to do so unless you just don't want to see the icon. Uninstalling will NOT reset your settings.
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Thanks! I messed myself all up though.
In android mobile network settings should I have network mode as global, LTE/CDMA or LTE/gsm/umts?
If its LTE/gsm/umts do I still use gsm only under select network?
And if I leave phone info installed do I have to change anything on there for LTE to work? Phone info seems to change the network selection in the app on its own so I just stopped messing with it. Thanks and sorry to be a pain
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If you on 4.4 you don't have to change anything to have LTE work on your phone. Follow step by step from the beginning of the thread to turn off LTE
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I'm on 4.2.2 and already changed settings. So was curious on what the original settings on 4.2.2 are to get LTE working with APN settings
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4.2.2 rarely get LTE data. Choose network mode as LTE/gsm/UMTS . select network as automatic. Don't use the phone info. If you already use the phone info app in this thread then use it again to switch back to LTE/gsm.. Or the option that has evething.
Remember to add APN fast.t-mobile.com
But as I mentioned, 4.2.2 has some problem with the radio , so it rarely pick up LTE
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Oh well in that case I might as well leave it lol. Thanks for the info
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Just to add another data point, I have a Droid Mini on stock 4.2.2. I'm connecting to t-mobile with the listed apn info, global and auto. I have LTE the vast majority of the time.
Cheers!

[Q] No 3G signal

So I just got my Note 3 SM N900 a few weeks ago. However the signal received was very weak, so I used Odin to flash a new modem (DXUBMI1, as demonstrated in this thread http://forum.xda-developers.com/showthread.php?t=2475714).
After flashing, the voice call and SMS were more stable, I constantly got -51dbm in signal strength. Yet in terms of network connection I could only connect via EDGE (2G). When rebooting, the phone could connect to HSDPA (3G) initially, but after a while, it drops 3G and turns to 2G again, hence I believe the problem is not with the service provider.
Please see the screenshots for more details. My questions are: how do I improve connectivity and are there any other better modem base band to flash on my Note 3 (I bought the phone and currently live in Vietnam).
Appreciate your help. Thanks.
Just edit out your IMEI Number from that screen shot first - keep that number to yourself always.
Do you have a case on the phone? Or a bumper?
Sent from my SM-N9005 using XDA Premium 4 mobile app
Try this go to settings > more networks > mobile network > then change network mode to WCDMA only then reboot your phone.
Hope it helps
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radicalisto said:
Just edit out your IMEI Number from that screen shot first - keep that number to yourself always.
Do you have a case on the phone? Or a bumper?
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Click to expand...
Click to collapse
Thanks. I use an S-View case on my phone (the flip cover one).
Dahdoul said:
Try this go to settings > more networks > mobile network > then change network mode to WCDMA only then reboot your phone.
Hope it helps
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Click to collapse
I forced it to WCDMA only and got 3G for a while...then the signal just went out altogether. The phone signal only came back after I switched back to WCDMA/EDGE auto select.
Is there any chance this problem is hardware related?
It is possible that it is hardware yes. However. . For some bizarre reason it may be the case.. take it off and see how it performs then you can reassess
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radicalisto said:
It is possible that it is hardware yes. However. . For some bizarre reason it may be the case.. take it off and see how it performs then you can reassess
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Click to expand...
Click to collapse
Tried taking off the case and the problem still doesn't resolve...I have it swapped for a new one. Thank you though.
bqduy said:
Tried taking off the case and the problem still doesn't resolve...I have it swapped for a new one. Thank you though.
Click to expand...
Click to collapse
Glad you got sorted. :good:
Dahdoul said:
Try this go to settings > more networks > mobile network > then change network mode to WCDMA only then reboot your phone.
Hope it helps
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Click to collapse
Wow thanks! Sorry for the late reply, but i was having the same issue as OP and I had my settings for GSM only and was only getting EDGE, changed the network mode and I am now getting H+ Thank you!!!
I have note3 n900 imei null/null and unknown baseband
I flashed it n900xxudnc1 4.4.2 now every thing is ok but network not working
I flash the modem file in cp by odin 3.09 after flash modem inein going null and baseband unknown
Plz give any solution and working modem file plz thanks in advance
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[Q] Galaxy S4 I9500 weak signal

Firstly i live in Kosovo (small country in Eastern Europe) and i use IPKO Mobitel sim card.
I am having a very weak signal on my Octa variant , i did root it in the past and changed the firmwares 2-3 times and flashed CM11 but after coming to stock non-rooted 4.3 i am having poor signal always 1 bar and sometimes even 0 when im at my home. I tried flashing different modems but still same no loss or gain..
http://i.imgur.com/D6IEVFu.png
Any help ? Which modem do you guys recommend ?
Thanks.
You on 2g or 3g?
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maxsam4 said:
You on 2g or 3g?
Click to expand...
Click to collapse
2G
stratzeH' said:
2G
Click to expand...
Click to collapse
Go to Settings>More Networks>Mobile networks>Network mode and change it to gsm only. if it doesn't help then change it to wcdma only and if even that doesn't work then change to auto connect and get a new connection from a better company
Note: It takes some time to switch network mode so be patient and give it a minute or two to properly shift.
Seeing improvements after doing what you told.
Thanks alot.
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stratzeH' said:
Seeing improvements after doing what you told.
Thanks alot.
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Click to expand...
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Hit the thanks button if you appreciate my post -_-
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hey
arber95 said:
Seeing improvements after doing what you told.
Thanks alot.
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how did u get this screen?

[Q] Convert Japanese Note 3 to Australia?

Hello all
I finally got myself a Note 3. Domoco SC-01F version.
Good price seems to be because it qont do data in Australia. So I'm hoping its the same hardware and just a firware / modem flash away from full data functionality. Maybe an Optus firmware flash might fix it?
I'd appreciate any words on this process. Especially if its a different radio chip and I'd be wasting my time trying. I hope I didn't get scammed...
Thanks for reading my post and in advance for any clues you can share with me.
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[Solved] OK it was just that the APN settings had to manually entered to bring data to life. All working fine now ☺
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