Mobile networking troubleshooting in CyanogenMod 13 - Galaxy S 4 Q&A, Help & Troubleshooting

I publish this if it is useful to someone. The same is something already, but I have not found .
I tried to place the post on "Original android development", but I could not.
I own a Galaxy S4 GT-I9505 and yesterday I installed CyanogenMod 13. It works great, but lost the network signal very often and got an error when trying to get a list of available operators: Settings -> mobile networks -> network operators. After searching a while the "error while searching for networks" is obtained and no operators are shown.
Looking at jira.cyanogenmod.org saw it was a common mistake and solved by modifying a line of build.prop file, namely :
"ro.ril.telephony.mqanelements"
Looking for that line, I had the value 6 ( ro.ril.telephony.mqanelements = 6), and I changed it to 4.
and... works.
I do not lose coverage and get a list of all available operators (very useful if you're at Yoigo and want to manually select the Movistar network in places where Yoigo is not covered) and I can select the desired.
A thousand pardons if someone had already published some of this.
Ah!, and apologies for my bad English.
A greeting.

Samsung Galaxy J7
I'm facing the same issue in J7
Could you please explain how can I change this value?
I'm newbie.

Solved my problem
Thank you, resolve my problem

i am using the latest CM on i9505 and it has by default this value (4) but still i face this problem ... now what i have to do ?

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This option is not available in Korean versions, you can get alternate from operator hidden menu. Follow this link and press thanks if it helps
http://forum.xda-developers.com/showpost.php?p=48874338&postcount=5
Is it hard to modify stock rom like custom rom to show that preferred network mode, and how could I ? Sorry if my question look newbie

Cyanogenmod 11 roaming problem

Hi Guys,
I have today downloaded and installed Cyanogenmod 11 on my S4 from Cyanogenmod website via one time installer.. Everying went fine but I have a problem now. My 3g is not working. My S4 is always on roaming. I have searched in internet first but I can't find a solution for this problem.
Can anyone help me please?
safi_k19 said:
Hi Guys,
I have today downloaded and installed Cyanogenmod 11 on my S4 from Cyanogenmod website via one time installer.. Everying went fine but I have a problem now. My 3g is not working. My S4 is always on roaming. I have searched in internet first but I can't find a solution for this problem.
Can anyone help me please?
Click to expand...
Click to collapse
Still no data?
This solution worked for a Danish guy with Telenor carrier.
"There are plenty of fields in an APN entry they my provider/carrier did not address, MVNO type for example, and that one turned out to be the problem It was set to 'SPN' by default, but it should be 'None'. I found that out be reflashing a CM11 M12 and checking the APN settings.
This particular misconfiguration is of course specific to my provider/carrier, but it is probably a general problem for people with mobile data problems."
Still no data. Wow cyanamod is so much better then touchwizz crap. But how can I solve this problem. Do I need to change on the APN?
I just got 2 updates from Cyanogenmod and my data is working. Finally

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The sprint note 3 forum is practically dead so I want to try the roms in here...
They all give me the option to choose my model number and csc number on install.
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Help Enabling Bands on 900F.

Hi all!
I've been gifted a 900F to replace my S3.
Went ahead and made all the changes to realize that it does not support Band 4 AWS, therefore I'm stuck on mostly 2g.
I've found a manual on how to unlock all bands on the 900F but it was written in 2014 and I'm not sure is valid any longer.
I've managed to root the phone, install CM 13 but I cannot access the hidden menu to activate the Diagnostic mode on USB.
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Has anoyne managed to follow the instructions recently? Should I change the ROM to something else?
Ar there any new prottections that make following the guide impossible this days?
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CDMA To GSM on any Custom Rom

Hello, guys, how are you ...?
I recently bought a galaxy s4 from verizon, as you know this device comes with the bootloader blocked so it does not allow changes in the system: (neither TWRP nor Roms anything, only root and module changes by flash fire) so I decided to buy a board of a SPH-L720 that works perfectly, until all very well the board brought stock rom and everything was great as far as wireless networks, so I decided to do root and change the recovery to install octos everything came out Good and booom! I had android 7.1.1 running on my sph l720, but there was a small problem THE MOBILE NET NOT WORKED anything 3g or 4g or anything, also in the settings did not allow to select preferred network type because it gave me a Error when doing it also with the code * # * # 4636 # * # * when selecting the gsm returned to LTE / CDMA and this was starting to annoy me so much because in my country CDMA is not useful and I was without service.
It happens that apparently the developers of this rom and the 10 most that proves they forgot to put in the build.pro the global network mode as preferred, so the cell phone only worked with LTE / CDMA and nothing else, so Try more than 20 ways install again stock and worked the network (but did not want stock wanted 7.1.1) so change the baseband and nothing at all this took me more than 4 days parting my eyes for a stupid error of the build. Prop so I found a tutorial on the net that gave me the link to a zip file flasheable by recovery and ready after 3 minutes select from 3g boomer and booom my cell running on 3g full and no signal decay thanks To all because I read all the help post and no one answered
Please send me imbox to pass the link since being new could not upload the link I will give them free
Hi, can you send me the information to [email protected].
Regards,
FiNXEN
hi friends. its true this post? can you send me the link with more information or the zip to test it. please. my email is [email protected]
best regards,
T.
Pls send zip
[email protected]
Please send me the link at [email protected] :fingers-crossed:
Hello Can you send link to me? I really need it. Mail: [email protected]
Idiots fall for anything.
I'm guessing that the OP was just spreading some BS, but I actually came here today looking for something that will allow GSM service on custom ROMs. My LG G3 just crapped out, so I had to get my 720T unlocked so I could use it on AT&T until I can afford to get something better. It works well enough on the stock ROM (although 3G kinda sucks) but it constantly switches between US Cellular and AT&T when I'm running a custom ROM, making it effectively useless.
Anyone know of any ROMs that can be flashed on the 720T that will enable GSM networks; any way to modify the popular ROMs floating around so they'll do what I need?

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