wifi problem - Galaxy S 4 Q&A, Help & Troubleshooting

i think i lost wifi from updating 4.3 .... i tried hundreds of firmware and custom roms but without succes
im asking from you if anyone know how to know the origin of my s4... which company it was bcoze i think its the only solution to get the firmware of that company / regiion ?

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Slow Internet (3G/LTE) after 4.4.2 Update

Hello Guys
Well, let me get straight to the point. After my old rom (Revolution HD3) was draining my battery pretty fast, i decided to update to 4.4.2. Well, i downloaded the latest 4.4.2 for switzerland from sammobile.com. I flashed it and it somehow was all laggy and i had fc's the whole time. After some time i was able to use the phone anyway, but it was laggy. And the problem was that my 3G connection was EXTREMELY slow. I got connection time outs the whole time and wasnt able to download anything. Well, i thought it was the rom i flashed trough odin, so i downgraded to 4.2.2, my original rom, and updated trough KIES. The rom wasnt laggy anymore, but the 3g/4g was slow. I tried different Modems and Kernels. Nothing Helped. I then decided im going back to a custom rom but the flash failed. Then i tried another rom and it failed again. So i thought it may was cause i was on 4.4.2 and tried to flash a custom rom that was 4.2.2. I then tried to reflash my stock rom trough odin, and it FAILED. And that's how i bricked my phone. I can still enter Download Mode, but can't enter the recovery anymore. What do i do? I'd like to solve both problems.
Thanks guys
Btw: I've got an I9505
I assume you didn't wipe anything before you flashed stuff? Thats like rule number 1 to do.
You can try flashing a recovery true Odin.
Hej Guys
Um.. Just to let you guys know, it is possible to downgrad to 4.2.2 from 4.4.2. I just did it this morning and had sucess. But the problem with the really slow internet connction still is here, when im on a 4.4.2. And, it is the same with custom roms running 4.4.2. I tried different kernels and modems, nothing helped so far. As soon as i was back to 4.2.2 it had the usual connection speed. I called my provider and also called samsung itself. Obviously, they both told me to bring the phone back for garantuee. But well, as i know it's a software problem and not hardware, i wont do that. So can you guys help me? What should i do next? Actually im back on 4.2.2. Thanks
Edit: Oh, and ofc, i did everything like wiping/factory resetting, wipping preoload etc. It's not my first time flashing.
It's not possible to downgrade from 4.4.2 to 4.2.2! End of..
Sent from my GT-I9505 using xda premium
Are you serious dude? Im running 4.2.2 right now. What is your point?`I didnt even ask about it. I asked about a solution to the problem that i get slow 3G/4G on my I9505 when running 4.4.2. If you want a proof Pic about it running 4.2.2, i can give you one. But i dont really get what your point is.
Hang on hang on hang on, it is common knowledge that you cannot downgrade from official samsung 4.4.2 to official samsung 4.2.2 because in odin you will get failure at aboot.bin because you cannot downgrade bootloader.
How ever what would be really good is instead of just trying to say it then jumping out saying what's your point, we'll my friend the point is, it would be advantageous to everyone in the entire samsung galaxy s4 i9505 community if you can tell everyone how you did it.
My perspective is your doing a bit of flaming.
Pictures really won't prove a whole lot as anyone can do some build.prop edits and show different rom name and version.
Sent from my GT-I9505 using Tapatalk
Well, if it sounded like flame to you, it wasnt. I didnt create this thread to flame others. But i wasnt kidding saying that i downgraded to 4.2.2. Here how i did it:
Was running 4.4.2 (I9505XXUFNB9)
Flashed TWRP recovery.
Flashed custom Rom 4.2.2, which FAILED!
Flashed Official 4.2.2 trough odin, which FAILED!
Flashed TWRP recovery again, since it was somehow damaged from the flash before
Flashed Wanamlite 4.4.2
Flashed Custom Rom 4.2.2
Flashed Official 4.2.2 with succes.
Im not sure what part of those flashes were essential, but i have no reason for liying to you. What would be the perks if i did?
But now again BTT, Did anyone else have that problem of slow interenet connection? Or is it just me? Maybe some ideas?
Regarding slow Internet maybe it's your carrier with issues.
Maybe the downgrade back to 4.2.2 has created issues in its self. Have you checked your baseband matches bootloader and build?
A problem we have is we can't see the version of the 4G modem (non-hols) so that might be also an issue.
When you flashed back did you do a factory reset?
In regards to downgrade do you still have the Knox bootloader?
Sent from my GT-I9505 using Tapatalk
Well, i called my operator and the girl on the phone said that some people already called with the same issue, but its not on their side. It's a problem with the update samsung released. After the downgrade i had my Knox Bootloader and everything worked like it always did.
Yesterday Sammobile released a new ''rom'' for my country. Downloaded it, flashed it and it works great now. I have a bit of a fast battery Drain, but the problem with the slow internet seems to be fixed.
Again: 4.2.2 worked perfectly after downgrade. It had no issue, No FC nothing at all. Maybe i was lucky? No idea, but im happy my 4.4.2 works now
Thanks anyway for your help guys
Edit: Yeah, my bootloader matched both baseband and build.
Joku1981 said:
Mod Edit
Click to expand...
Click to collapse
If you had done your homework, you would know that in almost all cases Samsung repairs it even with Knox set to 0x1. They even publicly stated it in the Netherlands that they will repair your phone even with custom roms.
And you don't know the law in Switserland. Nor do I. So you can't say that in Switserland his rights are voided by flashing.
If Samsung doesn't give you the warranty, then you still have your consumer rights in the European Union (not that Switerland is in it). No flashing, modding or other chances decleine you your rights if it's not related to a hardware failure. In the countries that you and I live in, it will never void your rights if the damage is not related to flashing or modding.
So well, i think that in switzerland they actually WONT repair it if you flash it, but i aint sure about that, since i never had to send it to repair. But anyway, it was only a software problem on their side. They released another version for switzerland and it seemed to have fixed the problem. I have a bit more of a battery drain, but i actually think im just too used to some other custom roms. Anyways, thanks for the help guys

Pls Help

hello to everyone
im new to flashing and moding my phone and i have a problem regarding my i9505 wifi..i got this OTA update 4.4.2 and installed it after installing/rebooting my wifi doesnt seem to go on (it has grayish green color) i tried to flash NG8 firmware downloaded from samsung website and still wifi issue is stiil there...i read all the related thread regarding with this problem but i am so confused
is there any steps/guide that i can understand bcoz i dont really have much knowledge about my phone\
hope there is someone out there to help me because i have this problem for almost a month now:crying:
jam4life said:
hello to everyone
im new to flashing and moding my phone and i have a problem regarding my i9505 wifi..i got this OTA update 4.4.2 and installed it after installing/rebooting my wifi doesnt seem to go on (it has grayish green color) i tried to flash NG8 firmware downloaded from samsung website and still wifi issue is stiil there...i read all the related thread regarding with this problem but i am so confused
is there any steps/guide that i can understand bcoz i dont really have much knowledge about my phone\
hope there is someone out there to help me because i have this problem for almost a month now:crying:
Click to expand...
Click to collapse
Hi pal you need to flash the Wi-Fi fix with odin but remember to follow the instructions to a T
http://forum.xda-developers.com/showthread.php?p=39176955
Remember to download and flash the correct corresponding modem in regards to your firmware
Sent from my GT-I9505
hi thanks for replying...i have tried flashing wifi fix no luck...is there any other guide?
Try reflashing firmware http://www.sammobile.com/firmwares/
Sent from my GT-I9505

[Q] S4 Cant get GPS fix

Hi my S4 is unable to find fix I think it worked on all stock. I have that feeling that I have to change the modem but I am not sure to which one, I have knox 0x1, (void) android 4.4.4, baseband i9505xxuhoa7, bhp 3.0 rom, I tried many roms and aps like gps toolbox without solution, I dont think its a hw problem. any tips ?
thanks

[Q] lollipop official stock problems

Hi im a bit of a noob when it comes too this flashing business but i managed to update my i9505 to lollipop using odin and the official stock rom but the problem i have now is my network signal is now terrible where it was good before is ther anyway that a noob like me can fix this issue? Im in uk on giffgaff (o2)
i have never rooted my s4 before and if some one has a noob guide for rooting from lollipop so i can custom rom it up i might give that a look too, I wouldnt mind a nice slim custom rom with a few extra tweeks and without all the google and samsung rubbish that comes standard..
Thanks
P.s sorry for all the questions and sorry if this is in the wrong section
The signal problem is probably caused by the modem.
You have to flash the latest modem for your phone, country and carrier.
If you already are on the latest modem then a lollipop modem might help.
Here you can find a guide on how to root lollipop.
If you want a slim rom you better try CM12 or GPE. If you like touchwiz then look for a touchwiz based lollipop rom around the forum.
clizzle said:
Hi im a bit of a noob when it comes too this flashing business but i managed to update my i9505 to lollipop using odin and the official stock rom but the problem i have now is my network signal is now terrible where it was good before is ther anyway that a noob like me can fix this issue? Im in uk on giffgaff (o2)
i have never rooted my s4 before and if some one has a noob guide for rooting from lollipop so i can custom rom it up i might give that a look too, I wouldnt mind a nice slim custom rom with a few extra tweeks and without all the google and samsung rubbish that comes standard..
Thanks
P.s sorry for all the questions and sorry if this is in the wrong section
Click to expand...
Click to collapse
Is your phone branded or unlocked? Coz this is very important. UK(O2) still without lollipop update. This is the possible reason that you are receiving weak network signal.
Joku1981 said:
Is your phone branded or unlocked? Coz this is very important. UK(O2) still without lollipop update. This is the possible reason that you are receiving weak network signal.
Click to expand...
Click to collapse
sorry for late reply... its unbranded unlocked version
i will try and look for the latest modem and give that a try tonight.... Think i might root and put a custom rom on in the end anyway as there is some minor bugs on the lollipop rom that its annoying me
Thanks for the help guys i will let you know how i get on
so im gonna flash this XXUHOB8 + Fix WIFI hopefully it might help as i was on XXUHOB7 before?
clizzle said:
so im gonna flash this XXUHOB8 + Fix WIFI hopefully it might help as i was on XXUHOB7 before?
Click to expand...
Click to collapse
Install this APP (cover serial number and IMEI) and add some screenshots for avoid problems.
sorry it wont let me upload as i dont have more than 10 posts what do you need to know and il tell you what it says
I'm also experiencing someone what of the same problem I've rooted/Un rooted a couple times, I'm back at a stock version and it seems to be ok.

HELPPPP ! lollipop 5.1.1

Look Guys I Have Tried Every Possible Way From My Brain And From The Internet , I Just Can't Figure It Out , i tried to root my note 4 ( N-910c ) But it didn't ,
possible Solutions on the internet caused boot-loop or else , anyway i searched for more solutions and Downgrading to 5.0.1 was the best solution , i downloaded several firmware from sammobile.com ,
but unfortunately useless i used odin10 and 9.3 almost every version out there but nothing just happens , the problem is when i try to downgrade my phone , either odin freeze on connection setup , or FAIL , i tried everything , please help me.
*I Disabled KiesTray In Case Someone Will Ask Me
Thank You Very Much.
AdhamHossam said:
Look Guys I Have Tried Every Possible Way From My Brain And From The Internet , I Just Can't Figure It Out , i tried to root my note 4 ( N-910c ) But it didn't ,
possible Solutions on the internet caused boot-loop or else , anyway i searched for more solutions and Downgrading to 5.0.1 was the best solution , i downloaded several firmware from sammobile.com ,
but unfortunately useless i used odin10 and 9.3 almost every version out there but nothing just happens , the problem is when i try to downgrade my phone , either odin freeze on connection setup , or FAIL , i tried everything , please help me.
*I Disabled KiesTray In Case Someone Will Ask Me
Thank You Very Much.
Click to expand...
Click to collapse
Greetings,
Thank you for using XDA Assist. To get you the expert advice you need, I'm going to move this thread to your device's Q&A forum. Good luck!
were you on "coj5" build of 5.1.1 if so then there is no way to downgrade coj5 5.1.1 will lock bootloader of your phone making it impossible to downgrade.

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