[Q] Updated phone and lost my LTE connection.. - Galaxy S 4 Q&A, Help & Troubleshooting

Ok here is what is been happening so far..
I was on Kitkat 4.4.4 on a i9505 (can't remember the baseband info for that model - never had issues with it). I decided to update. So I downloaded a LP ROM and went ahead and backed up and then installed it. Everything seemed to be working fine except my mobile data connection. It would be stuck on 3G or H+ and when it hit the LTE (4G) it would have one bar. I never had this issue before. I was always on full LTE bars as the tower isn't far from my house.
I followed instructions n how to install new modem with LTE and how to update the bootloader accordingly. I tried more than 15 different modems with no luck.
When that failed, I flashed the stock LP ROM from SamMobile - same issue. So I decided to downgrade again to KitKat and flashed another ROM from SamMobile which is issued by Optus Australia and that failed too.
It's like there is a setting that isn't changing with flashing ROMs and stock ROMS. Basebands get updated and nothing.. I'm barely downloading at 600kbs where I was averaging minimum 1.5mb/s.
I don't know what else I've missed.. surely the stock KK ROM would've fixed the issue.. but nothing, as if I don't have LTE anymore.
You're help is much appreciated.

Over this issue =\ just want it gone.

gspotr said:
Ok here is what is been happening so far..
I was on Kitkat 4.4.4 on a i9505 (can't remember the baseband info for that model - never had issues with it). I decided to update. So I downloaded a LP ROM and went ahead and backed up and then installed it. Everything seemed to be working fine except my mobile data connection. It would be stuck on 3G or H+ and when it hit the LTE (4G) it would have one bar. I never had this issue before. I was always on full LTE bars as the tower isn't far from my house.
I followed instructions n how to install new modem with LTE and how to update the bootloader accordingly. I tried more than 15 different modems with no luck.
When that failed, I flashed the stock LP ROM from SamMobile - same issue. So I decided to downgrade again to KitKat and flashed another ROM from SamMobile which is issued by Optus Australia and that failed too.
It's like there is a setting that isn't changing with flashing ROMs and stock ROMS. Basebands get updated and nothing.. I'm barely downloading at 600kbs where I was averaging minimum 1.5mb/s.
I don't know what else I've missed.. surely the stock KK ROM would've fixed the issue.. but nothing, as if I don't have LTE anymore.
You're help is much appreciated.
Click to expand...
Click to collapse
I never flashed my radio, i just changed the recovery rom, you may have too adjust your apn settings or enable it in the network settings whats your model version?

did you try any custom roms/kernels? check if the issue persists.

TheAwesomeBit said:
did you try any custom roms/kernels? check if the issue persists.
Click to expand...
Click to collapse
I have flashed anything and everything to fix this issue with no luck.

Related

[Q] SM-N9005 Wi-Fi not working (CM11 + XXUBMI5 baseband). Try other modems?

Hi I recently flashed my SM-N9005 to ZHUENB5 (official all-in-one, Odin). There was no signal (GSM or Wi-Fi) after that. I then tried flashing NB5 & NB1 modems but neither worked. After flashing XXUBMI5 (modem only) I was able to get HSPA+ signals & make phone calls. However I still got no Wi-Fi connection even though it says connected & show a Wi-Fi icon in status bar (other phones work), no matter in official ROM or CM11.
Any suggestion? Why the official all-in-one does not work (I checked re-partition while flashing but the pit file is for 16G whereas my phone is 32G)? I guess I should try other modems? It already bothered me for a couple of days so your help is very much appreciated.
hhsz said:
Hi I recently flashed my SM-N9005 to ZHUENB5 (official all-in-one, Odin). There was no signal (GSM or Wi-Fi) after that. I then tried flashing NB5 & NB1 modems but neither worked. After flashing XXUBMI5 (modem only) I was able to get HSPA+ signals & make phone calls. However I still got no Wi-Fi connection even though it says connected & show a Wi-Fi icon in status bar (other phones work), no matter in official ROM or CM11.
Any suggestion? Why the official all-in-one does not work (I checked re-partition while flashing but the pit file is for 16G whereas my phone is 32G)? I guess I should try other modems? It already bothered me for a couple of days so your help is very much appreciated.
Click to expand...
Click to collapse
To answer my own question, after so many attempts it turns out that only flashing a 4.3 modem over a 4.4 stock ROM solved my problem (even 4.4 stock won't work without flashing another 4.3 modem). That's really weird! Hardware issue?
hhsz said:
To answer my own question, after so many attempts it turns out that only flashing a 4.3 modem over a 4.4 stock ROM solved my problem (even 4.4 stock won't work without flashing another 4.3 modem). That's really weird! Hardware issue?
Click to expand...
Click to collapse
Not hardware no, HK Firmware issue I guess. HK fw is a strange one with the N3, causes so many issues. - Least you figured it out though :victory:

[Q] No Data Service on New Resurrect or Blisspop ROMs

Edit: Fixed using this - http://forum.xda-developers.com/showpost.php?p=53502055&postcount=16
Newer ROMs don't seem to have the correct settings for the Ting APN. Make sure the network type is strictly CDMA/LTE and in particular that the APN Type is set as both DEFAULT and as mms (default, mms).
Hey guys, hoping someone can help me out here.
I'm on the "Ting" cell network using an LS980. Resurrect Remix ROMs worked well for me up until the 5.3.8 update (5.3.7 was the last version that still gave me cell data). The new 5.3.9 also causes issues and the SIM card even completely locks itself at times as it attempts to contact the network.
I just installed the latest Blisspop nightly ROM and am having the same issue. I know that older LiquidSmooth ROMs were also working properly for me aafter I used one of them as a Plan-B from Resurrect.
If anyone has any ideas as to what the issue could be please let me know. I'm going to try tinkering with my radio files soon and see if I get anywhere.
Bumping. sorry but this is getting really frustrating. I tried flashing the ZVC and ZV8 modems and it didn't make a difference.
ZVC modem actually crashed my phone (running Blisspop 2.2 latest nightly, stock kernel, TWRP 2.7.x recovery) after attempting to flash the ZVC modem without clearing the cache/dalvik afterwards.
I've now restored my phone to factory, stock ZVE ROM and rooted using StumpRoot. I'll be putting on the TWRP recovery soon.
If anyone has any ideas as to why I'm having radio/modem/signal problems on any Resurrect ROM past 5.3.7 and with the new Blisspop please let me know. I really want to get back on a non-bloated, up to date ROM.
>tfw
Bumping again. My phone is actually having a few other odd issues now after having to go back to stock with the ZVE .tot and re-rooting/recovery...
I'm still mostly concerned with the data signal though. I'll sort the rest out myself.
PLS SUM1
Ayyyyy Lmao

vs980 LTE fix?

previous to this day everything had been running smoothly, but now since i flashed the 39a bootstack to try out a new 5.1 rom on my vs980 i seem to have lost my LTE connection. how would i correctly repair this? i head flashing a stock rom would repair some sensors, would i leave the 12b bootstack on it, flash a stock build, then flash back to say, beanstalk? previously running liquidsmooth but they seem to have taken their lollipop builds off the server...
I have the same problem - flashed Cloudy ROM, kdz back to stock but now I don't have 4G. I'm about to just try a new SIM card and see if it went bad, because I saw LTE for one day a few weeks ago and this all happened back in January. I've reset APN's and did all of the tricks but no luck so far
Literally just got it to work a few minutes ago. As of this morning had NO service whatsoever, ended up flashing the rooted 39a lollipop stock I found here in the forums. I had to remove my sim card, boot the phone, then restart it with the sim card in place to get back to working order
So do you think it was a bad baseband or bootstack? Or just a faulty download from the start?
might be a baseband issue, but then again i havent really gotten a solid answer from anyone.
and just flashed to AoD rom tonight and lost LTE again. maybe it has something to do with aosp incompatibility? i know there have always been issues with cdma network of verizon, maybe it came back fresh with the lollipop update.
and i despise the stock roms... i would not be happy if thats the only way to fix this.
perforatedpaper said:
previous to this day everything had been running smoothly, but now since i flashed the 39a bootstack to try out a new 5.1 rom on my vs980 i seem to have lost my LTE connection. how would i correctly repair this? i head flashing a stock rom would repair some sensors, would i leave the 12b bootstack on it, flash a stock build, then flash back to say, beanstalk? previously running liquidsmooth but they seem to have taken their lollipop builds off the server...
Click to expand...
Click to collapse
If you haven't try dialling *#*#4636#*#* and go to phone information and in the drop down menu select the proper mode for your carrier. Worked for me on VS980 using T-Mobile
FlubbleWubble said:
If you haven't try dialling *#*#4636#*#* and go to phone information and in the drop down menu select the proper mode for your carrier. Worked for me on VS980 using T-Mobile
Click to expand...
Click to collapse
Can you share the settings you use with Tmobile? I just flashed the 27A kdz and getting connectivity issues with Tmobile.

No data connection on Android 5.x

Hi
I have a problem with my Galaxy S4 i9505 (I9505XXUFNB9). I can't get any data connection when i flash to a rom running Android 5.x. I've tried many different kinds (e.g. Cyanogenmod, Slimrom). There's just an exclamation mark next to the data symbol. Enabling roaming doesn't work, and changing to LTE etc. doesnt either. So i am beginning to suspect that it's a problem related to my phone and Android 5.x. When installing a custom rom i've used the version specific to my phone (jfltexx). There's no problem with the data connection running an Android version below 5.
Thanks in advance.
Did you update your modem?
Lennyz1988 said:
Did you update your modem?
Click to expand...
Click to collapse
I figured that could be the issue, and i was previously looking into that but i gave up when i couldn't find a modem that seemed to match my model. Also i was worried if flashing the modem would be irreversible.
Could anyone point me to where i can find the correct modem update?
http://forum.xda-developers.com/showthread.php?t=2192025
If you don't know exactly how it works, then you also just flash one of the latest lollipop firmware versions our here.
OK, this is driving me crazy :S Today i decided to try two more custom 5.x roms before flashing the modem. I tried both the Omega and the Goldeneye custom roms. And now the problem was the WI-FI connection didn't work! I couldn't even enable the WI-FI connection at all. But the data connection worked...
Then i tried flashing several different modems (I9505XXUFNDG, I9505XXUFNB9, and I9505XXUFNC9), including the WI-FI fix from the thread above (NON-HLOS.bin), and none of it solved the WI-FI issue.
For now i've downgraded to the stock Android 4.4.2 rom...

Installing Kitkat modem on Lollipop rom, risky? might solve the Refreshing SIM error

Setup:
rooted note 4 910F Snapdragon
Nameless Rom V5
POK1 modem
While I'm at work (an area with a weak signal) I sometimes get the "Refreshing SIM Data" error randomly. enabling DATA roaming helped a bit, but not enough. It used to happened on earlier lollipop modems as well from what I recall.
read about this on google, did the standard stuff but nothing solved it completely. last solution I will try is suggested in this thread, stating that reverting the modem only back to kitkat version may solve this.
just to be sure, I won't brick my phone if i install kitkat modem on a lollipop rom?
if it's somehow safe, which kitkat modem should i install? can someone please give a link?
thanks.

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