Phone stays in Roaming mode. - HTC Desire S

I've Installed this yesterday, but I'm experiencing a couple of bugs.
I first did a format (disk + dalvic),
then flashed Codename Android v3.3.2
then Camera + Backlit Fix
and then Codename Android GAPPS
Because I have a S-on device, I flashbooted the boot.img from the CA Gapps zip. (other zips didn't have that file)
Everything works very smoothly, but the errors/bugs I encounter are:
4. When I insert my SIM-card, I'm always Roaming, untill I enable WIFI, then I can make phonecalls.
So when WIFI signal is lost, I'm at Roaming and mobile-internet doesn't work.
Does other people have these issues, or is it because of a wrong Boot.img I flashed?
Click to expand...
Click to collapse
Since I don't want to post this in the dev section anymore, I'll continue here.
This problem first started with Codename Android.
When I install an other ROM; for example Blindbean, the problem stays.
Then I tried MIUI from Shrome, same problem.
(always with format disk and clean dalvik cache)
This night I installed the ICE-DS v4.4 ROM, and everything works fine again.
But when I install Blindbean again, problem is back.
You guys have any idea how this is possible.

Boot.img isn't suppose to be in gapps. Should be inside the rom itself.
When flashing a new rom always do a full wipe.
Sent from my HTC Desire S

Ok, so I did again couple of hours of googling and stuff, and found some interesting stuff.
In our country, we have 3 mobile networks with their own towers. (proximus, mobistar, base)
But 2 of them rent these towers to other carriers. (mobistar for example to Telenet)
It appears Jellybean (I have it on every JB rom) sees a difference between the carrier and the tower-network. (If you get my point)
So I have to enable Roaming to be able to use my carriers network.
So far I can see, no additional costs.
But this still is a strange bug, that started with JB.

Related

[Q] Desire S loosing signal

Hi all,
A week ago I bought a brand new Desire S and installed latest CM 7.1 stable following the guide on cyanogemod Desire S Wiki using revolutionary 0.4pre4. Everything was smooth and nice, I flashed ROM and GAPPS and my phone is working absolutely perfectly... but there is one little problem...
I am using Desire to fetch my mails from 2 mailservers using IMAP every 30 mins. But when the phone is switching between network modes i.e. HSDPA -> EDGE or EDGE -> GSM or any other way, I am disconnected from operator network for about 10 seconds until the network mode changes and everything is fine after that, until there is another network mode switch.
This happens for me about 10 times a day, so my phone sometimes appears that It is turned off for people who want to call me. Immediately after connecting to network I get a missed call SMS from my operator.
Interesting thing is, that when I disable email fetching, disable background data transfer and disable network data, the phone works fine without "blackouts".
Can someone help me with this problem? Maybe a radio issue?
Some more info:
ROM: Cyanogenmod 7.1.0 Desire S
Recovery: Revolutionary CWM v4.0.1.4
HBOOT: 6.98.1002
Kernel: 2.6.35.14-cyanogenmod+ [email protected] #1
Radio: 20.28I.30.085AU_3805.06.02.03_M
There is a newer radio-file online.
Maybe it's solving your problem.
I'm using MIUI and never had such problems, but i'm interested in flashing CM, so please report if the problem is gone by flashing newer radio!
Which radio version are you using?
Today I am testing 2G only switch so I am on EDGE data only.
Flashing radios is safe......, but a bad radio flash will instantly brick your phone.
You are using 1.47.401.4 radio, try updating to the 2.10.401.5 one.
Thanks for reply.
Shoud I flash something else with the radio?
I have 20.4801.30.0822U_3822.10.08.04 downloaded from cmw.22aaf3.com
Another I have is ftom OTA update zip file OTA_Saga_S_HTC_Europe_2.10.401.8-1.47.401.4_release_225210fmxlt12djw1sr7y5.zip where is one radio.img in formware.zip file too - version unknown
So Which one to flash?
and if so, which method should I use to flash radio? The Android SDK one or the ZIP + Bootloader one?
MyroLM said:
Shoud I flash something else with the radio?
Click to expand...
Click to collapse
no need
MyroLM said:
I have 20.4801.30.0822U_3822.10.08.04 downloaded from cmw.22aaf3.com
Click to expand...
Click to collapse
this file is what ur looking for! check md5-checksum before flashing!
MyroLM said:
and if so, which method should I use to flash radio? The Android SDK one or the ZIP + Bootloader one?
Click to expand...
Click to collapse
Both will work, i'm using method by using bootloader normaly
Strangely I had the same issues as you on Endymion.
Then I updated radio to the latest.
It worked well.
Then I went to CM7. It was fine for a while, but now I'm losing signal with no 3G bars and its not switching automatically to 2G like it should when It has no 3G signal!
EDIT:
After really reading your post, I realise my issue is no way like yours! Yours seems really bad. Update your radio.
-------------------------------
Sent from my HTC Desire S
So, here we go with the results
I flashed 20.4801.30.0822U_3822.10.08.04, md5sum checked OK, update sucess, but phone with no signal...
I flashed 20.48.30.0822U_3822.09.08.20, md5sum checked OK, update sucess, but phone with no signal again...
I flashed 20.28I.30.085AU_3805.06.02.03 back, md5sum checked OK, update sucess, but phone with no signal again...
... what now ... ?
After each flash wiped cache and Dalvik...
in your telephone-info there is shown the new radio after every flash?
do you have removed the batterycover, because there is integrated the antenna of your device!
mouzzza said:
in your telephone-info there is shown the new radio after every flash?
Click to expand...
Click to collapse
Yes, correct number every time.
mouzzza said:
do you have removed the batterycover, because there is integrated the antenna of your device!
Click to expand...
Click to collapse
No, the cover is at its place where it should be. Somehow I did the trick and I am back online with 20.28I.30.085AU_3805.06.02.03 on 2G only for now.
I read somwhere in the forum that ENG HBOOT is required for new radios... Are you sure I dont need to flash eng hboot it before new radio ??
MyroLM said:
Somehow I did the trick and I am back online with 20.28I.30.085AU_3805.06.02.03 on 2G only for now
Click to expand...
Click to collapse
in your area 3g is actually available?
may it helps to go outside, to find your net for the first time!
did you set an accesspoint for 3g?
may you have to set automatic settings, rather than 3g/2g-only?!
MyroLM said:
I read somwhere in the forum that ENG HBOOT is required for new radios... Are you sure I dont need to flash eng hboot it before new radio ??
Click to expand...
Click to collapse
using same hboot as you, never had problems on flashing radio-files!
yes, in my area there is 3g, when I turn off 2g only switch there is a problem described in my first post, so i am on 2g for now just to keep phone connected to network.
main problem is when i am driving and the phone is switching network modes.
so I give 20.4801.30.0822U_3822.10.08.04 today another chance, try to flash if again.
but i am woried about stucking on HTC logo after flash :-( and brick it.
MyroLM said:
but i am woried about stucking on HTC logo after flash :-( and brick it.
Click to expand...
Click to collapse
i already had the problem for several times, and i also pulled out the battery (you shouldn't do that)!
only had to boot into bootloader, start recovery, wipe all partitions, flash rom and was having fun again with my device
this thread could help you, if really stuck on HTC logo
For your real problem on loosing the signal, did you ever tried out using actual stock rom, or another custom one like MIUI?
i used MIUI from 2010-08 till yesterday, now trying out CM7.1 for some days
I have the same or a very similar problem. I have the stock rom.
I already had 3 different desire s motherboard's and 2 different display's.
The first Desire S i had, with android 2.3.3, had a excellent signal. Due some problems i had, the phone bricked and had to go to HTC to repair.
HTC replaced the motherboard and update the version of the android to 2.3.5 and ever since the signal caption, the signal switch was working very bad.
The phone went to a second repair because of this, new phone, and again with android 2.3.5. The problems persisted.
I also tested with different SIM cards, from different mobile operators.
So, my conclusion is either android 2.3.5 or this new versions of Desire S have problems with signal caption and signal switch.
So as you, i need some help with this issue!
mouzzza said:
i already had the problem for several times, and i also pulled out the battery (you shouldn't do that)!
only had to boot into bootloader, start recovery, wipe all partitions, flash rom and was having fun again with my device
this thread could help you, if really stuck on HTC logo
For your real problem on loosing the signal, did you ever tried out using actual stock rom, or another custom one like MIUI?
i used MIUI from 2010-08 till yesterday, now trying out CM7.1 for some days
Click to expand...
Click to collapse
But when I reboot to recovery it will flash the radio again I think.
i hate stock roms, and dont like MIUI design That is why I am using Cyanogen
Anyway if I use 2G only switch, the phone is stable as rock both calls and data transfer.
EDIT: OK, flashed 20.4801.30.0822U_3822.10.08.04 sucessfully, signal OK, I will see what happens whet metwork mode switches
@Green Hawk:
give us more information about your device please, which radio you're using? Did they flash actual radion also?
@MyroLM:
report if the problem is still there or it's gone with flashing the rom
I am still testing new radio, but looks good Give me some days let you know...
Hi All,
I have a similar problem with the latest CM7.1 nightly builds (Reaper, jorgen2009). I never saw this with older CM7.1 versions, e.g. Nexx version, ICS, MIUI oder Endymion.
I have WLAN on and leave my house. Phone switches to 2G/3G..., so far so good. When I return home, The WLan sign in the status bar appears again, everything seems to be fine, but I have no connection. I get no data via WLan until I swicth WLan off and on again.
Radio is the latest from 2.10.401.5.
Best Regards
Wrapp
Had similar problems, upgrading to the latest radio helped. I got stuck on the HTC screen and I went through flashing RUU's and unlocking bootloaders back and forth... when the only thing that needs to be done is to wipe the cache.
Learned a lot about bootloaders though. But my warranty got void because i did the htcdev unlock... (Sorry for OT)

[Q] Wifi Issues

I would have posted this in the Sensation Android development area, but I don't have sufficient privileges to do so.
I no longer have WiFi.
I am using the 4.1.2 CM Kang, and I originally had WiFi working with that ROM, but it stopped working about a weeks ago, and I can't get it to come back.
If I watch the Wifi on/off toggle, I can see it blink white for a split second then return to grayed out about once every 5-10 seconds.
I've checked the WiFi settings, and the only thing that looks peculiar is that the region code under Advanced says "Europe," but when I try to change that, it just reverts.
I have tried a factory data reset,re-flash of the ROM, and installing newer versions of the ROM with no luck.
Does anyone have any suggestions?
tried this ?
WiFi will not turn on
ganeshp said:
tried this ?
Click to expand...
Click to collapse
I tried to install WiFix Manager, and I followed the directions closely, but WiFi still will not turn on.
The country code always reverts back to Europe in the Advanced WiFi Settings.
I'm on T-Mobile US, running AOKP aokp_pyramid_unofficial_Oct-19-12.zip; a JB ROM; 4.1.2
I previously tried the CM10 Kang for the HTC Sensation, but switched ROMs to make sure that it wasn't issue with the ROM.
To be clear, my problem is not that the WiFi radio never locks to a particular signal, it's that the WiFi radio won't even turn on.
When I go to WiFi settings it just says, "Turning on WiFi...," and never actually turns on.
My best guess was that it had something to do with the WiFi country code, but that's really just a stab in the dark; open to suggestions.
Thanks
bump
Surely, there's someone out there that can help?
kosstheory said:
Surely, there's someone out there that can help?
Click to expand...
Click to collapse
In order of easiest and quickest to longest time it will take to do each one...
Install the latest version of the ROM (10/23) overtop of your existing rom (5 minutes)
If that doesn't work...
Do a full wipe and install a fresh copy of the latest version. (15 minutes, with Nandroid backup)
If that doesn't work...
Format your SD card (save all the contents to your computer first) (40 minutes between copying every to the computer and back to the SD card)
NON ROM RELATED OPTION IF YOU ARE S-OFF
Reinstall your firmware as it's possible something got messed up. You will have to boot to recovery after this and wipe cache and dalvik or you will get bootloops. (5 minutes, but a little more involved)
My guess is that the full wipe and fresh install is the most likely to work the first time.
Skipjacks said:
Reinstall your firmware as it's possible something got messed up. You will have to boot to recovery after this and wipe cache and dalvik or you will get bootloops.
Click to expand...
Click to collapse
is there a sensation specific guide for this procedure?
Still perplexed
How do I know which kernel and radio combination should work best with my ROM. I switched out to AOKP to see if that was the problem, and I believe I'm using the 3.33 Kernel, but I don't know how to check to make sure it installed correctly.
Had the same problem as you but a full wipe and reflash would bring it back. Seems to be a CM10 problem since it happens with Bruce's and Paranoid roms. Try a Sense rom and see if wifi works.
Is OpenSense considered a "Sense ROM?"
http://forum.xda-developers.com/showthread.php?t=1926858
Try that rom, more stable and better performance than all the popular roms.
I had the same problem only option was another room Android_Revolution_HD-Sensation_6.8.0 (this is the rom)
so long, and thanks for all of the fish...
I figured it out.
I bought a Samsung Galaxy S III. WiFi is working again.
Thanks for all of the help!
wifi cm10
I have tried several CM10 roms. It is as you said about the region code. It reverts back to the original and doesnt save it on the settings
Even though editing db file doesn't work. Actually it changes the country code. I guess the ROM changes it during booting. Because while it boots you can see that the wifi is connecting first then goes off. I have tried several roms. DOnno what the problem is. probably JB both on cm10 and aokp

Motorola XOOM Z604 32GB IHDT56MT1

Motorola XOOM Z604 32GB IHDT56MT1
Sorry if there was another thread about this, but i looked and didn't find any
Anyway friend of mine flashed some kinda rom he says official 4.1.1 JRO03H, but i'm not sure
anyway as he said after OTA tab is freezing randomly and gives android keyboard error
so i assumed i can unlock/root and flash some custom rom that will resolve the problem
after using AIO tool and unlocking/rooting/flashing various roms problems persists
sometimes tab is crashing during start up (android loading) sometimes just randomly by touching/using absolutely random
using tiamat recovery 3.2.2 and TWRP, it's rock stable in recovery
so i assume it's hardware related
any ideas, cause i'm out of any
p.s. it does have a sim card slot, but judging by FCC code it's wifi only
p.s. i tried to flash stock rom and lock it, still freezing and crashing randomly, first at wifi menu then at internet browser, guess something is really hardware related, possibly memory got corrupted or something like that
p.p.s now i'm not even sure which xoom this one is, is it a wifi only or 3g and maybe it needs some different stock rom? most confusing tab i've seen so far, there is just so many variation of this
thnx in advance
Mortibus said:
Motorola XOOM Z604 32GB IHDT56MT1
Sorry if there was another thread about this, but i looked and didn't find any
Anyway friend of mine flashed some kinda rom he says official 4.1.1 JRO03H, but i'm not sure
anyway as he said after OTA tab is freezing randomly and gives android keyboard error
so i assumed i can unlock/root and flash some custom rom that will resolve the problem
after using AIO tool and unlocking/rooting/flashing various roms problems persists
sometimes tab is crashing during start up (android loading) sometimes just randomly by touching/using absolutely random
using tiamat recovery 3.2.2 and TWRP, it's rock stable in recovery
so i assume it's hardware related
any ideas, cause i'm out of any
p.s. it does have a sim card slot, but judging by FCC code it's wifi only
p.s. i tried to flash stock rom and lock it, still freezing and crashing randomly, first at wifi menu then at internet browser, guess something is really hardware related, possibly memory got corrupted or something like that
p.p.s now i'm not even sure which xoom this one is, is it a wifi only or 3g and maybe it needs some different stock rom? most confusing tab i've seen so far, there is just so many variation of this
thnx in advance
Click to expand...
Click to collapse
The wifi xoom also has a sim card slot but it does not work( missing the radios).
Can you get into recovery and which one is it (custom CWR or stock)? With the xoom off press power until the moto dual core logo appears then press volume down after 3 seconds. You will see android recovery written on top press volume up. If you still have a custom recovery you can then install 4.1.1 JRO03H again but do a factory wipe (very important to get rid of any possible corruption) before and a cache dalvik cache wipe before.
If you are still having issues you can fastboot the stock honeycomb wifi images and allow the updates to happen automatically but this will wipe all of your data. I can walk you through this.
i did mentioned recovery in my post, otherwise how the hek would i be able to flash it in the first place duhh
i did all that, i even tried stock image 3.01 let it update it all the way up to the 4.1.1 which kept giving me weird android keyboard stopped working error and same random freezes
most stable was honeycomb though, i could stay in the system sometimes longer before touching anything, i even let it on lock screen for an hour or two and wouldn't freeze, in ics and jb it froze on lock screen, sometimes wouldn't even let me pass welcome/choose language
i just don't understand how can it install without any problems and stock/custom recoveries being stable while in OS it's just freezing for no apparent reason, my theory is something wrong with video part of the chipset, then again i simply dunno anymore
i tried several times factory defaults and wiping cache before and after flashing didn't helped
Good luck

[Q] Radio problem with custom ROM

I'm hoping for some friendly advice - I have a Desire S which was rooted last year and I installed CM10 to try out JB. All has been working well )part from the occasional reboot) however couple of days ago the battery started draining quickly, the phone became very hot and the wifi stopped working. After various wiping of caches and rebooting I decided to try some other ROMs (Fallout Evolution V5, Miui, IceDS) and although they all installed OK I still have no wifi and now the mobile network won't work.
It worked on Fallout at first but when the wifi wasn't working I wiped and re-installed and it hasn't worked since. It does see the O2 network although the phone hd previously been unlocked to work with Vodafone, so I think I may have rolled back the radio somehow.
At this stage I'm not entirely sure if it is a software or hardware problem, and I din't know how to test the hardware.
The phone is currently as follows:
UNLOCKED
Saga PVT ship s-on RL
HBOOT -2.02.0002
Radio -3831.19.00.110
eMMC -BOOT
July 31 2012>15.41.32​
Do I need to update the radio? If so, which version should I use? And do I need to s-off the phone first?
Any other help would be appreciated.
lesmorton said:
I'm hoping for some friendly advice - I have a Desire S which was rooted last year and I installed CM10 to try out JB. All has been working well )part from the occasional reboot) however couple of days ago the battery started draining quickly, the phone became very hot and the wifi stopped working. After various wiping of caches and rebooting I decided to try some other ROMs (Fallout Evolution V5, Miui, IceDS) and although they all installed OK I still have no wifi and now the mobile network won't work.
It worked on Fallout at first but when the wifi wasn't working I wiped and re-installed and it hasn't worked since. It does see the O2 network although the phone hd previously been unlocked to work with Vodafone, so I think I may have rolled back the radio somehow.
At this stage I'm not entirely sure if it is a software or hardware problem, and I din't know how to test the hardware.
The phone is currently as follows:
UNLOCKED
Saga PVT ship s-on RL
HBOOT -2.02.0002
Radio -3831.19.00.110
eMMC -BOOT
July 31 2012>15.41.32​
Do I need to update the radio? If so, which version should I use? And do I need to s-off the phone first?
Any other help would be appreciated.
Click to expand...
Click to collapse
Did You tried installing stock rom again in your mobile
No I haven't. I assume this would re-install the correct radio?
Not sure where to get the stock ROM, or which one was shipped with the phone.
If I did get it can I flash it through recovery - I'm using 4EXT?
lesmorton said:
No I haven't. I assume this would re-install the correct radio?
Not sure where to get the stock ROM, or which one was shipped with the phone.
If I did get it can I flash it through recovery - I'm using 4EXT?
Click to expand...
Click to collapse
Boot into bootloader and run following command
fastboot get cid
Than you can know which ruu to flash. But don't forget to downgrade your misc version before fishing ruu
No ruu are flashed from PC
Sent from my HTC Desire S using xda app-developers app
OK, I have managed to get the phone back to it's stock ROM which is O2 in the UK.
I had previously unlocked the phone but it now won't accept anything other than an O2 SIM. When I scan for networks only O2 is seen. I still have the unlock code but when I put a Vodafone SIM in it doesn't prompt me for the unlock code. I'm just getting a Limited Service display.
Is there any way of forcing the unlock code prompt screen - say with keyboard numbers or via Fastboot?
lesmorton said:
OK, I have managed to get the phone back to it's stock ROM which is O2 in the UK.
I had previously unlocked the phone but it now won't accept anything other than an O2 SIM. When I scan for networks only O2 is seen. I still have the unlock code but when I put a Vodafone SIM in it doesn't prompt me for the unlock code. I'm just getting a Limited Service display.
Is there any way of forcing the unlock code prompt screen - say with keyboard numbers or via Fastboot?
Click to expand...
Click to collapse
do i understand things as they are?
do you intend to use simcards of another operator?,
well... that`s what branding stands for,
to make sure
you`ll not use any sim from different carrier...
is your phone simlocked as well,
or is it only a branded rom ?
..but why bothering to flash the phone with branded RUU,
(when there are quite a few generic ones, still floating around,..)
except, when one wants to claim a warranty..may be...
I flashed the O2 ROM as it was what was on the phone when I bought it and I was trying to get back to a radio that would work.
I have since managed to get the phone working OK with the Asda/Vodafone SIM but I am still having problems with the wifi (this is where it all started!). whenever I switch the wifi on it scans and then reports that it is unable to scan for networks, after 2-3 attempts the wifi switches itself off.
I'm still trying to find out if it is a software or hardware problem. Other than that all is working well on the Fallout v5 ROm I have flashed - although it does make the phone run hot.
lesmorton said:
I flashed the O2 ROM as it was what was on the phone when I bought it and I was trying to get back to a radio that would work.
I have since managed to get the phone working OK with the Asda/Vodafone SIM but I am still having problems with the wifi (this is where it all started!). whenever I switch the wifi on it scans and then reports that it is unable to scan for networks, after 2-3 attempts the wifi switches itself off.
I'm still trying to find out if it is a software or hardware problem. Other than that all is working well on the Fallout v5 ROm I have flashed - although it does make the phone run hot.
Click to expand...
Click to collapse
make backup (CWM)
try to find, and flash another kernel- custom,
..that may be a possible fix, for wifi issues,
as that is very often caused by,
not efficient, or completely missing drivers (0kb file size)....
...depending on the RUU version- flashed,
you might be interested in:
http://forum.xda-developers.com/showthread.php?t=1845039
otherwise, try to look for < unity > or < endymion > kernel.....
..Heat might be caused either
by battery,
or CPU - struggling with heavy flaw of graphics, (like < Google Earth >+< Browser >+<anything one prefers > )
or a nasty app ( or several ), constantly trying to consume, most of its resources...
..both quite simple to eliminate...
..and...undervolting, it helps to reduce heat - too...
asgardr said:
make backup (CWM)
try to find, and flash another kernel- custom,
..that may be a possible fix, for wifi issues,
as that is very often caused by,
not efficient, or completely missing drivers (0kb file size)....
...depending on the RUU version- flashed,
you might be interested in:
http://forum.xda-developers.com/showthread.php?t=1845039
otherwise, try to look for < unity > or < endymion > kernel.....
..Heat might be caused either
by battery,
or CPU - struggling with heavy flaw of graphics, (like < Google Earth >+< Browser >+<anything one prefers > )
or a nasty app ( or several ), constantly trying to consume, most of its resources...
..both quite simple to eliminate...
..and...undervolting, it helps to reduce heat - too...
Click to expand...
Click to collapse
I changed the ROM to IceDS v8 which seems to run cooler. I think part of the problem was with Titanium Backup running and the wifi kept searching for a network.
I am still having the wifi problem as it displays 'unable to scan for networks'. Having searched the internet extensively and tried a few different so called fixes I have come to the conclusion it is a hardware problem. When I get time I'll see if I can strip the phone and see if I can find the cause.
lesmorton said:
I changed the ROM to IceDS v8 which seems to run cooler. I think part of the problem was with Titanium Backup running and the wifi kept searching for a network.
I am still having the wifi problem as it displays 'unable to scan for networks'. Having searched the internet extensively and tried a few different so called fixes I have come to the conclusion it is a hardware problem. When I get time I'll see if I can strip the phone and see if I can find the cause.
Click to expand...
Click to collapse
Well I stripped the phone and checked what connections I could but still no wifi.
I have used the RUU to get back to stock ROM and everything is fine except the wifi not working. Does anyone know if the wifi hardware is on the PCB, and if so where it would be in the phone. As the phone is in excellent condition I am thinking of getting a cheap phone with broken screen and just cannibalising it with my phone and building one good phone. It's just knowing what part of the phone contains the wifi hardware.
Any help would be appreciated.

[CM14] Cell Signal can't connect, turns off immediatly after trying to reconnect

This is consistent across every CM14 ROM I've flashed. I am upgrading from CM13.
The signal bar at the top is blank as in "no service", it attempts to reconnect and show a signal for a split second but then goes back to "no service" again. When I remove my SIM card and reboot the problem simply vanishes, but of course I can't get LTE
Firmware: PCA
Recovery: TWRP 3.0.1.0
I have tried running the ROM stock with no data restore and I have tried flashing APN settings from this post.
I at first thought it was a CM14 bug but then I read that others had no problems with CM14 ROMs.
Assuming you actually have a SM-G900P (since a lot of people ignore that little detail) it's probably a matter of Cm14/14.1 doesn't appear to be wholly happy with anything other than the latest baseband, which is now PK1. To get it, just reflash to stock with Odin and then poke at the thing until it gets the two OTA updates that will bring you up to PK1. At that point if you like you can poke at the controls to update the PRL and Profile (just to be sure everything's good) and then let me suggest you make a call or two and/or send some SMSes to be sure you didn't mess something up when you tried to change the APN settings one almost never needs to touch, and then flash TWRP (or whatever recovery you use) right back in and sideload the Cm14.1 nightly and open-gapps for 7.1. Also, you will need to do a factory reset after upgrading to 14.1 or you'll get a wholly different set of misbehaviours out of the phone (trust me... I deliberately cut corners through multiple rounds of reflashing to find out what symptoms to look for). One of the more endearing failures can be no soft keyboard, nobody wants that.
I had a bunch of weirdness happening (including completely non-functional GPS) with CM14 a few days ago, and since the changelog doesn't seem to show anything addressing the screwy problems I had, it hints very strongly that people will need to update to PK1 before they can expect the device be reliable.
OH... and don't try and enable Adoptive Storage if it asks. The performance is abysmal for some reason (around 2Mb/s on a Class-10 card that otherwise hums along at 14Mb/s) and it will make any apps that are trying to use storage run like crap.
So people have it working on PK1? Has anyone had it working on PCA?
Edit: Odin restored PK1, it didnt want to boot after the reflash. I installed TWRP and restored a PCA Backup, updated PRL and profile. I flashed a cm14.1 ROM and still had the same issues.
It also didn't wipe my internal storage when I ran odin, which I remember it doing in the past.
Worked great on my S5 900P
Gracefully I got it to work on Resurrection Remix. Idk if it was the APNs or just more stable ROMs.
I booted RR stock w/o gapps, I went to enter in the APN settings using this site and it just magically worked after I entered in only the first line. It's hard to tell if it was because the ROM found out how to connect or if the first line of the APN settings triggered something.

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