Wifi problem on SGH i337 - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

Hey all! so.. my friend came from U.S and he got me a used Galaxy 4 from AT&T, and the Wifi is just stuck on a green grey situation, its not on or off
i tried any solution online that i could find. i don't know what to do anymore. nothing helping the things that are only helping was changing the router settings to a different encryption mode from WEP and then its worked but when i connected my gs4 to a different wifi connection the problem happened again
the wifi can work days if I'm not switching wifi spots.
my only solution by now was just to change to a whole new custom ROM
the problem is, that i have NO IDEA how to do it due the fact that i have a mac and i couldn't find a Proper noob guide from scratch to do that. please help me! i am a graphic designer and an artist with a MA in fine arts and i would love to help u guys too
Thank you so much!
elirandahan.com

This is what I used to get adb/fastboot on my iMac. I am on MDL build, early version phone.
You will need to find you build number first. Under Settings/About Device to determine how to flash roms on the phone--a screen of that page may help also--

rugmankc said:
This is what I used to get adb/fastboot on my iMac. I am on MDL build, early version phone.
You will need to find you build number first. Under Settings/About Device to determine how to flash roms on the phone--a screen of that page may help also--
Click to expand...
Click to collapse
hey thanks i added a photo but apparently i need 10 posts at least so just add www i58.tinypic.com/v41bue.png
the wifi is working cuz i restart it to manufacture settings again but soon as i will disconnect him and join a different connection he will go grey again

From the PM photo you are on NB1 build--
If you are going to root to flash a custom rom you will need the below two links--
Read Op page of first link, I think it depends on how the phone got to NB1 as which steps you need.
http://forum.xda-developers.com/showthread.php?t=2616221
You will need SafeStrap in below link. So, read up on that.
http://forum.xda-developers.com/showthread.php?t=2448925
These are if you are going to root to flash a rom. You can only flash Touch Wiz roms and no custom kernels or recovries.
If you want to get back to stock status you will need to flash the appropriare firmware and use Odin on a PC and Heimdall on Mac. Will have to research that.
What carrier are you on and where you are at?
Was the phone ever rooted--
I never returned to stock or used SafeStrap, so someone with hands on experience will have to help on that.

Hiii....I am also having the same problem.My phone was unlocked by a guy and everything was working fine then.From next day the i could not turn on WiFi(It would go grayish for some time and then return to normal).I tried searching for it online and found the following soln
1)Reboot and check(Didn't work)
2)Factory Reset:After doing this it worked for that initial scanning but again was back to normal once wifi was switched off
3)Factory reset and installed root browser(my phone is rooted as i was able to install root explorer) and tried renaming the wpa-supplant config file
.This was worked for me for like 4 days.
After that again the problem is back and its even worse.It is immediately turning off as opposed to delay in previous case.When i tried to follow the same procedure the config files are not present.I could not on wifi even after factory reset even once
As i am a new around here detailed help would be appreciated;
My Device Features:
1)Andriod:4.4.2,SGH I337
2)Baseband:I337UCUFNC1
3)kernel Version:3.4.0-1125940
4)Build No:KOT49H.I337UCUFNC1

Related

[Q] MK2 - Wifi and Mobile Data not working

EDIT: I was able to get mobile data working by manually putting in APN information. Sometimes the Wifi will show APs to connect to and when I try it just stalls and then auto turns back off.
I have frequented these forums for years now without really needing to post a thing or ask a question til now. I have also looked all over the forums and subforums and google for a solution.
I was updated to MK2 as soon as I got my phone. I then was able to root it successfully and installed SafeStrap. I never really got to play with it much and from what I read it didnt really work at all with this build. Anyhow, I decided to go ahead and do a factory reset via the stock recovery and all went fine. I then decided to try and get rid of some bloatware since I cant by any other means currently. I stumbled upon SchoolSux script TrulyClean and ran it. After it was successful I booted back up to notice that my Wifi and Data wasnt working at all. I am able to make calls and text and the phone functions correctly thus far.
I have tried installing modems via Odin, SS TWRP Recovery and even tried connecting to Kies to perhaps get all stock again. Which at this point would be great. I have even tried going down to the MJ6 Modem FW with success but still nothing.
I really need some help and pointers here guys. Of course I rushed this all and didnt make a back up, I expect to be flamed for that, lol. Thanks in advance for any help.
It is the I337 - ATT with MK2 4.3
hmm
Well I was able to get Deadly Venom SS Edi. on my ROM 1 emu via SS and everything works fine. So it seems like I just need like a fresh pure install of the full MK2 build am i right?
Well I wanted to avoid this but following Ted77USA's post found here http://forum.xda-developers.com/showthread.php?t=2573080&nocache=1 POST #3. I followed it verbatim even though i wasnt completely bricked, just didnt have WIFI and APN settings auto load. However, following it word for word got me back to original condition with working wifi and APN auto populated.
THANK YOU SO MUCH TED!
funkmastersquirrel said:
Well I wanted to avoid this but following Ted77USA's post found here http://forum.xda-developers.com/showthread.php?t=2573080&nocache=1 POST #3. I followed it verbatim even though i wasnt completely bricked, just didnt have WIFI and APN settings auto load. However, following it word for word got me back to original condition with working wifi and APN auto populated.
THANK YOU SO MUCH TED!
Click to expand...
Click to collapse
Glad that all worked out for u and got your phone back......:good::good:......FIRST THANKS FROM ME.....

[Q] Mobile Hotspot TetheringProvision.apk Modification Isn't Working

First off, hi everyone. This is my first post here after browsing for a few weeks. Yesterday I went ahead and rooted my AT&T s4 with the whole reason for doing so wanting to use wireless hotspot for free, and it isn't working.
Tl;dr I tried the TetheringProvision.apk mod technique and it just crashes my settings menu.
Full story:
After softbricking my phone and having to bring it into att 2 days ago I finally figured out a method of rooting it. I got this phone very recently and it came with the 4.4.2 (NB1) update pre-installed. I used the downgrade/root/safestrap method (using the OTA zip method because the stock with root zip wouldn't get past the att splash screen) and am back on 4.4.2/NB1. Everything is working, root included (verified by successfully changing system file names), but when I try to put in the TetheringProvision.apk file that used to work for the hotspot on my old MK2 phone from some other thread on this forum it just crashes my settings menu. The error I get is a "settings has stopped" popup and it kicks me out right when I move the "mobile hotspot on" slider. I'm really hoping there's a simple solution here, but if worst comes to worst I guess I'll just have to try a different rom? Attached is a screen shot of my about device. I really hope someone will be able to help, thanks in advance.
Ok, so I'm now thinking about backing up this rom in safestrap, and re-flashing the backup I made of the MK2 downgrade that I used to install the root. The problem with that was the wifi not working, but I just found a post about bypasslkm. Only problem is that I don't fully understand how to use bypasslkm and even through search I can't find a good guide on it. Could anyone here walk me through the dumbed down version of how to use it? From what I understand I flash the bypasslkm.zip just like I would any other rom, but I don't really get what to do after that. I'm kind of surprised that I'm the first one to have either of these issues, I couldn't find any good information via search.
TaylarRoids said:
First off, hi everyone. This is my first post here after browsing for a few weeks. Yesterday I went ahead and rooted my AT&T s4 with the whole reason for doing so wanting to use wireless hotspot for free, and it isn't working.
Tl;dr I tried the TetheringProvision.apk mod technique and it just crashes my settings menu.
Full story:
After softbricking my phone and having to bring it into att 2 days ago I finally figured out a method of rooting it. I got this phone very recently and it came with the 4.4.2 (NB1) update pre-installed. I used the downgrade/root/safestrap method (using the OTA zip method because the stock with root zip wouldn't get past the att splash screen) and am back on 4.4.2/NB1. Everything is working, root included (verified by successfully changing system file names), but when I try to put in the TetheringProvision.apk file that used to work for the hotspot on my old MK2 phone from some other thread on this forum it just crashes my settings menu. The error I get is a "settings has stopped" popup and it kicks me out right when I move the "mobile hotspot on" slider. I'm really hoping there's a simple solution here, but if worst comes to worst I guess I'll just have to try a different rom? Attached is a screen shot of my about device. I really hope someone will be able to help, thanks in advance.
Click to expand...
Click to collapse
There is a tethering AddOn in the same NB1_100%_Stock_Rooted_ROM & NB1 KeepRoot OTA zip thread that you can flash in safestrap.

Problems after doing unlocksim. Urgent help please.

Hi all, I apologize for my low level of English. I want to tell that to write this report use the google translator.
I also thank in advance the help that you can give me.
Acontinuacion expose my problem:
I followed the steps in a tutorial, to release my samsung i9505 galaxy s4, exposed one of the most important forums, Htcmania.com my country, Spain.
By exposing my problem in the same forum that supra and receiving no response clarification about my problem, I turn to the more important to try to find a solution forum. I go to XDA-Developers.
I do a copy and paste of the report I wrote on the forum that I quoted earlier as I explained my problem well:
My s4 with Android 4.4.2 was completely "virgin" had installed the rom Stock samsung, was not released, was "Yoigo" any advanced recovery had not installed, and had no permits super user "root".
I wanted to release it (Unlocksim) seeking information HTCMania, and I found the following topic "Free S4 I9505 (Unlocksim) in 4.4.2" I followed all the steps in the tutorial. One of the "requirements" was to be root to do a backup of the EFS before touching anything, and to use the application "Region lock away"
So no, I did root, flashing by odin CF-Auto-Root 4.4.2 package.
Being root installed the advanced recovery "CWM" philz touch. And I found myself at this point I made a backup of the EFS system being completely "virgin" that is, with stock rom samsung and android 4.4.2. I followed the steps in the tutorial that I have made previously to unlocksim. One of the requirements to release the phone was change the modem to modem I9505_DXUAME2_MODEM, so I changed the phone modem and followed the guidelines set by the tutorial,
Region to use the application could lock away briefly display an error is possibly to blame for me as I'm seeing. This error could display for two seconds, but from that moment everything seemed to work well, the phone was released. So I changed the modem again for mine.
At this point I decided to choose to install a cooked rom based on stock, namely Omega rom v38.1 for s4 I9505.
And at this point is when my headaches begin to appear. I have experienced problems with the release ... see, the issue is that when the network coverage data is in H + the phone works perfectly, but only if H is not able to load websites etc. This has led me to the edge as I can not be aware every moment of the type of data coverage.
My questions are:
1. Is there a way to stop the phone as he was before unlocksim, ie leave it as it was originally being from Yoigo? (Remember to keep a copy of SAI realized when the system was completely untouched.)
2. How I can solve this problem with the network coverage data?
3. What do you advise me to do?
Please help. Greetings.
you might want to try searching sammobile to see there is a ROM you can download and flash that's for your country and ideally for your phone provider as well. I've run into issues like this on a couple of occasions. One was indeed that the country's ROM I flashed uses differant frequencies and I had the same mobile data connectivity issues you're talking about. This is rare for the international Samsung phones but it does happen. The other scenario I ran into was after flashing a port of the Google Play Edition onto tit, which gave it extended network options, and everything worked quite well but when I restored to stock from a backup on my sdcard I had connectivity issues, once again just like you're describing. In this scenario flashing a fresh stock ROM entirely solved the problem.
Note that in the second scenario I didn't redo the data partition. Presumably flashing the system fixed it or reflashing the firmware partition reinitialized things the way they are meant to work for me.
search for I9505 (or whatever the model of your phone is) where it says search for your device http://www.sammobile.com/firmwares/
Google around the codes if the results aren't revailing enough for what's stock for you and try reflashing in odin. If it persists then backup your apps, wipe the data partition, possibly backup your internal storage as well if you have a stock recover, and try again. Beyond that I haven't had to deal with further problems than that yet but I saw that no one else had responded...

Weird Wifi/bluetooth Issue. Kinda unique. Need help

Ok. This is my first time posting here in the forum hopefully i can explain this thoroughly and get some good help.
My friend has brought me by his gs4 that he wanted first to only be unlocked. It went from this simple task to a huge one. Im slightly technically inclined but im just starting with phones.
First issue. Found that alot was broken on the phone.(charge port , camera, casing dinged) I replaced his camera, got him a new charge port, and install a new back and rim. The phone now looks like new.
I then tried to figure out a free way to unlock.
I dont have all the links to what i did but this is how it went (while he was on ni1 baseband).
I rooted with towel root, installed safeboot, flashed a mf3 modem, and used region lockaway, and profit he was able to connect to tmobile.
i then flashed back to ni1 modem just for consistency.
Now after getting that issue done i handed it to him and he immediately handed it back to me because wifi didnt work. after further research i noticed that wifi nor, bluetooth , or tethering worked.
So i looked up all this fixes with the wpa supplicant file. I delete and moved files around and sometimes i would get wifi but id also get issues like the screen not turning back on in stock and id have to either hold the power button for a long time or pull the battery to reset.
he suggested that we flash a rom so i chose the echo rom from this link.
*cant post link cause im too new*
(this unit has a locked bootloader so flashing a new kernel - which im %100 sure would fix this - is not possible)
i flash the rom, the ni1 modules, the customizations, and a updated su.
when in the new rom i tried wifi again and it doesnt work.
So i then started reading more into the supplicant files and noticed the system folder version has wlan0. i tried replacing the supplicant file in the data folder with this one and still no wifi. i replaced that supplicant file with a supplicant file i backed up before installing the new rom. I go in the file and view its contents after it failing to boot wifi yet again and notice that it actually says my model number is i337. i then delete this file and just reboot. When i reboot wifi and bluetooth come back on simultaneously but when i power off the screen it freezes. I reboot and view the supplicant contents. It now has i9505 as the phones model number in the file. I delete it again and reinstall the old supplicant file and the wifi now doesnt work and the screen doesnt freeze.
i look in the about tab in the phones setting and for some reason this rom does say this phone is a i9505 but im %100 sure this is a att.
What exactly is happening? why cant i get the wifi to work properly? and when it does why does the screen not wake up?
jarool112 said:
Ok. This is my first time posting here in the forum hopefully i can explain this thoroughly and get some good help.
My friend has brought me by his gs4 that he wanted first to only be unlocked. It went from this simple task to a huge one. Im slightly technically inclined but im just starting with phones.
First issue. Found that alot was broken on the phone.(charge port , camera, casing dinged) I replaced his camera, got him a new charge port, and install a new back and rim. The phone now looks like new.
I then tried to figure out a free way to unlock.
I dont have all the links to what i did but this is how it went (while he was on ni1 baseband).
I rooted with towel root, installed safeboot, flashed a mf3 modem, and used region lockaway, and profit he was able to connect to tmobile.
i then flashed back to ni1 modem just for consistency.
Now after getting that issue done i handed it to him and he immediately handed it back to me because wifi didnt work. after further research i noticed that wifi nor, bluetooth , or tethering worked.
So i looked up all this fixes with the wpa supplicant file. I delete and moved files around and sometimes i would get wifi but id also get issues like the screen not turning back on in stock and id have to either hold the power button for a long time or pull the battery to reset.
he suggested that we flash a rom so i chose the echo rom from this link.
*cant post link cause im too new*
(this unit has a locked bootloader so flashing a new kernel - which im %100 sure would fix this - is not possible)
i flash the rom, the ni1 modules, the customizations, and a updated su.
when in the new rom i tried wifi again and it doesnt work.
So i then started reading more into the supplicant files and noticed the system folder version has wlan0. i tried replacing the supplicant file in the data folder with this one and still no wifi. i replaced that supplicant file with a supplicant file i backed up before installing the new rom. I go in the file and view its contents after it failing to boot wifi yet again and notice that it actually says my model number is i337. i then delete this file and just reboot. When i reboot wifi and bluetooth come back on simultaneously but when i power off the screen it freezes. I reboot and view the supplicant contents. It now has i9505 as the phones model number in the file. I delete it again and reinstall the old supplicant file and the wifi now doesnt work and the screen doesnt freeze.
i look in the about tab in the phones setting and for some reason this rom does say this phone is a i9505 but im %100 sure this is a att.
What exactly is happening? why cant i get the wifi to work properly? and when it does why does the screen not wake up?
Click to expand...
Click to collapse
Did you try flashing the stock NB1 ODIN? Try that first. I don't know why the Wi-Fi issues would happen, but it's best to start there and try to fix it.
Sent from my SGH-I337
Thanks im gonna give it a try tonight and ill post back if works and the full method i go through.
jarool112 said:
Thanks im gonna give it a try tonight and ill post back if works and the full method i go through.
Click to expand...
Click to collapse
your friend has the Chinese knock off which is a real frankenstein. FW reports it to be a sgh-i337 but SN or IMEI say it is a i9505.
Check here and tell us what you get:
Code:
imei.info
sndeep.info
We may be able to help you out better if we know whether or not this is the real chinese knock off or not.
Salutations.
@DeadlySin9
i tried the stock tar flashing. I flash with a tar located here :
http://forum.xda-developers.com/showthread.php?t=2674223
with odin 3.09
it got back to stock but if the screen cuts off it still freezes and the wifi did come up but bluetooth was enabled.
@VladimirMan93
no that would be very wierd. if it was it a very very good knock off. lol. but i am about to check the files after applying towelroot

[Q] Wifi lost; Unique problem maybe.

Anyways as my title says, i don't have wifi. I had first rooted my phone, but then I unrooted my phone by flashing some unrooted os on the samsung which caused two problems. My wifi and mobile data didn't work at all, but after I took it to a repair shop they fixed the mobile data and got it working again and rooted my phone but not the wifi part. According to the person that tried to fix my phone, the current android os, 4.3 - jellybean, that i flashed via odin is preventing the wifi from working. I don't really know whats wrong with the phone but can anyone help me? Also by baseband version is 1337UCUFNJ4 and the build number is JSS15.1337UCUEMK2. Should i try to find a ROM that matches my baseband version and flash it via odin? Thank you in advance!
P.S. This is my first thread, so please tell me if i violated any rules.
aldrichk said:
Anyways as my title says, i don't have wifi. I had first rooted my phone, but then I unrooted my phone by flashing some unrooted os on the samsung which caused two problems. My wifi and mobile data didn't work at all, but after I took it to a repair shop they fixed the mobile data and got it working again and rooted my phone but not the wifi part. According to the person that tried to fix my phone, the current android os, 4.3 - jellybean, that i flashed via odin is preventing the wifi from working. I don't really know whats wrong with the phone but can anyone help me? Also by baseband version is 1337UCUFNJ4 and the build number is JSS15.1337UCUEMK2. Should i try to find a ROM that matches my baseband version and flash it via odin? Thank you in advance!
P.S. This is my first thread, so please tell me if i violated any rules.
Click to expand...
Click to collapse
im having the same problem and i think we both have knox stupid security back on the phone that's blocking the wlan to start from bad permission or encryption
so personally yeah i will install back the original firmware (before 4.3) from factory reset (or via odin if i have to force it) then im gonna re-root the phone
having back permission ill remove knox (probly with titanium) lock and box bs from base firmware and probly remove root right
then im guessing ill have my internet back now will i go full rom again or basic function thats a good question
so many freaking remote exploit lately
ill let you know if that fix it
I also just found this
om22 said:
1. untick "Auto reboot" in odin
2. flash the stock rom again
3. reboot your phone to download mode again (by holding the power and vol down button for 10 sec)
4. flash the stock rom a second time with auto reboot ticked
This will fix your problem.
Click to expand...
Click to collapse
seems that clicking auto reboot might be the cause
so would i install the I337_NJ4_Stock_Kernel.tar.md5 file following that method or would i have to find another firmware/rom/(i don't know what to call this) unrooted
aldrichk said:
so would i install the I337_NJ4_Stock_Kernel.tar.md5 file following that method or would i have to find another firmware/rom/(i don't know what to call this) unrooted
Click to expand...
Click to collapse
official did not work for me
i the flashed / reset to factory for Galaxy S4 SGH-I337M VLUAMDJ
rebooted and prayed but no luck
finally found a solution but that did changed my PDA version to 9505 but got everything working again
so if you dont mind the 9505 change (more rom and solution for 9505) id go with echoes for all in 1 fresh install solution and its a nice rom
Instruction can be found on this thread : http://forum.xda-developers.com/showthread.php?t=2372286
knowing the problem was modem i did also found this solution to re-flash and fix wifi on i337 without changing to 9505
Follow these instruction to stay i337 : http://forum.xda-developers.com/showpost.php?p=46762296&postcount=1
but i have not tested for i337
in the end i got this setup
rom echoes illusion kot 49h
kernel : 3.4.103-aelkernel-v6.2
bootloader and baseband i337mvlufnc1
pda :i9595v jughn2
hardware/ board : qcom/msm8960
platform / chip : msm8960 / apq9064
modem /board : mdm9215m
hope that help
and sorry for bad english http://cdn4.xda-developers.com/images/icons/icon8.gif
EDIT PS: These solution require basic knowledge with odin flash and cwm recovery or twrp recovery

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