Sim card bug - Galaxy S 4 Q&A, Help & Troubleshooting

Hey i have recently installed cm 12.1 nightly in my sprint s4 sph l720 i got a one major problem sim card is isn't responding now what i should have to do any clue guys.. Help me out of this before i were in lollipop 5.0.1 and there is not any sort of problems...

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[Q] Galaxy Note 3 SMN900W8 sim not working after updating..!!

Hello I have this Galaxy Note my brother gifted me it's SMN900W8 it was running 4.3 then I searched and found that it has a update for 4.2.2 I successfully update it but now the sim is not working I have tired every sim it says not registered on network can someone please help what have gone wrong I have added the screen shot of firmware

[help] problem with my s4 and random reboot for sim problem

hi guys
sorry for my bad english first
so...my girl have a ****ing samsung s4 i9505 with a random reboot. the smartphone give random sim unfinded error and reboot.... i have tryed imperium v14 and v15 and last lollipop google edition yesterday, but i have always the same problem...is it an hardware problem? modem problem? i'm ready with an hammer for resolving the problem forever
thanks for your support

No SIM card error on cm 13 SM T531

Please help me guys I'm new here and I just upgraded to cm 13 yesterday and since then my sm t531 keep reporting no sim card no service.Srr for my bad English

Wifi Country Code and klte (SM-g900f) and CM12

Hi guys. I bought a Galaxy s5 g900f (aka klte) with stock touchwiz android 4.4.2. In my country, Chile, it refused to connect to any wifi. I did some research, rooted it, installed Rom Toolbox, and I wrote a script that solved the issue, which set the wifi_country_code to us.
I was having some issues with LTE and 3g data connection, so i flashed cyanogenmod 12.1, because in my experience it has solved problems on other devices before, automagically (on passion, i9300, iyokan). Then, wifi stopped working. I looked everywere about how to solve the wifi_country_code issue on CM12 or lollipop, to no avail.
I was thinking about flashing CM11, but cant find CM11 for klte. Now, i'm thinking about going back to stock 4.4.2 . Can you tell me somethig to try before going back to stock?
device: Samsung SM-g900f (klte)
Current ROM: Cyanogenmod 12.1
I want to connect to the damn wifi, so if someone knows how to solve the damn wifi_country_code issue on lollipop on S5 stock, it would be helpful.
Getting angry and shouting damn a lot won't help
Have you asked in the CM12 thread?
EDIT - Now you're on Stock LP 5.0?
Which is it?
http://forum.xda-developers.com/showthread.php?t=1982149
Codes
http://web.archive.org/web/20080210040406/http://www.unicode.org/onlinedat/countries.html
http://iso.staratel.com/InfTech/ISO3166/CountriesCodes.htm

jiayu s3 - dual SIM problem

hello to everyone, i have jiayu s3 and i've got a problem with the dual sim.The phone can't have signal for both sims only from one.The slots are both working.This problem had started with the official rom and then i flashed rc5 but the problem was still existed.Can you please help me to solve the problem because i need both cards working on my jiayu.Thanks!

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