Simple inquiry about WiFi when screen's off - Galaxy S 4 Q&A, Help & Troubleshooting

Hi there, fellow enthusiasts!
My phone doesn't connect to WiFi when the screen is off. As soon as I turn it on, it's good to go; connects within 2 seconds or so which is great. I'm just wondering why it doesn't connect to WiFi when the screen is off. I've tried every option possible and for well over a year now it just doesn't go thru with screen off automatically. I've switched ROMs, done stock, you name it.
It's annoying to have to take the phone out of my pocket, wake it up, and then check my notifications; it should be doing this automatically. I know it does this with data fine but I don't use my phone like that, I'm a WiFi only kinda guy.
Help me troubleshoot. Any help would be of so much help. Thanks!

totbl said:
Hi there, fellow enthusiasts!
My phone doesn't connect to WiFi when the screen is off. As soon as I turn it on, it's good to go; connects within 2 seconds or so which is great. I'm just wondering why it doesn't connect to WiFi when the screen is off. I've tried every option possible and for well over a year now it just doesn't go thru with screen off automatically. I've switched ROMs, done stock, you name it.
It's annoying to have to take the phone out of my pocket, wake it up, and then check my notifications; it should be doing this automatically. I know it does this with data fine but I don't use my phone like that, I'm a WiFi only kinda guy.
Help me troubleshoot. Any help would be of so much help. Thanks!
Click to expand...
Click to collapse
Install this app and post the screenshots.
https://play.google.com/store/apps/details?id=org.vndnguyen.phoneinfo

Lennyz1988 said:
Install this app and post the screenshots.
https://play.google.com/store/apps/details?id=org.vndnguyen.phoneinfo
Click to expand...
Click to collapse
What info are you looking for? Thanks for the quick response.
Also, I found this.
http://forum.xda-developers.com/google-nexus-5/help/wifi-issue-t3059452
Seems to be common enough.

totbl said:
What info are you looking for? Thanks for the quick response.
Also, I found this.
http://forum.xda-developers.com/google-nexus-5/help/wifi-issue-t3059452
Seems to be common enough.
Click to expand...
Click to collapse
I am looking for you modem in combination with your rom and bootloader.

Lennyz1988 said:
I am looking for you modem in combination with your rom and bootloader.
Click to expand...
Click to collapse
Modem: MDM9615M
Bootloader: L720VPUAMF9
ROM: CyanogenMod 12.1-20151012 jfltespr
From what I can gather the WiFi needs to poll more when the screen is off. Once in a blue it'll connect with screen off (may take up to 2 hours) to a known SSID. I'm not concerned about battery life with more polling, honestly. It'd be way more convenient to not have to turn my phone on to connect to an SSID.
I believe it used to work on 4.4 but I can't be sure. That thread I linked to said the behavior started on 5.1 if that's helpful.

totbl said:
Modem: MDM9615M
Bootloader: L720VPUAMF9
ROM: CyanogenMod 12.1-20151012 jfltespr
Click to expand...
Click to collapse
Modem: MDM9615M
This is not your modem. This is the chip inside your phone. I need the modem.

Lennyz1988 said:
Modem: MDM9615M
This is not your modem. This is the chip inside your phone. I need the modem.
Click to expand...
Click to collapse
Oh, sorry about that. I'm guessing you meant the baseband: L720VPUAMDC

totbl said:
Oh, sorry about that. I'm guessing you meant the baseband: L720VPUAMDC
Click to expand...
Click to collapse
Ok
The issue you are having was a common issue, but no one has that issue anymore. If I remember correctly that issue happens when you are running an old modem on new firmware. The wifi disconnects when you turn the screen off.
You are using a 4.2.2. bootloader and a 4.2.2. modem with a Lollipop rom. Why haven't you upgraded to a Lollipop bootloader and modem?

Lennyz1988 said:
Ok
The issue you are having was a common issue, but no one has that issue anymore. If I remember correctly that issue happens when you are running an old modem on new firmware. The wifi disconnects when you turn the screen off.
You are using a 4.2.2. bootloader and a 4.2.2. modem with a Lollipop rom. Why haven't you upgraded to a Lollipop bootloader and modem?
Click to expand...
Click to collapse
haha I honestly don't know. Like I said, I only use my phone with WiFi (Hangouts and Optimum Online = no monthly bill.) I didn't think I needed to upgrade. Which modem do you recommend I upgrade to? I'll report back as soon as I upgrade.

totbl said:
haha I honestly don't know. Like I said, I only use my phone with WiFi (Hangouts and Optimum Online = no monthly bill.) I didn't think I needed to upgrade. Which modem do you recommend I upgrade to? I'll report back as soon as I upgrade.
Click to expand...
Click to collapse
I don't know which modem since this is the section for the i9505. It's a different model. You can also just flash the latest stock rom.
You have to check here, but at least you know what to look for.
http://forum.xda-developers.com/galaxy-s4-sprint

Lennyz1988 said:
Ok
The issue you are having was a common issue, but no one has that issue anymore. If I remember correctly that issue happens when you are running an old modem on new firmware. The wifi disconnects when you turn the screen off.
You are using a 4.2.2. bootloader and a 4.2.2. modem with a Lollipop rom. Why haven't you upgraded to a Lollipop bootloader and modem?
Click to expand...
Click to collapse
I assume I should use the latest: MF9FirmwareAIO and Odin. I'll be right back.

Lennyz1988 said:
I don't know which modem since this is the section for the i9505. It's a different model. You can also just flash the latest stock rom.
You have to check here, but at least you know what to look for.
http://forum.xda-developers.com/galaxy-s4-sprint
Click to expand...
Click to collapse
Same result. Firmware upgraded to latest.
It's not that my WiFi turns off when the phone is asleep. It'll stay on whatever WiFi I'm connected to, but as soon as I am out of range from it, it obviously will disconnect BUT then it doesn't connect to any other WiFi in range unless I turn the screen on first. That thread I linked you to lists the same exact problem.
I appreciate the help.

totbl said:
Same result. Firmware upgraded to latest.
It's not that my WiFi turns off when the phone is asleep. It'll stay on whatever WiFi I'm connected to, but as soon as I am out of range from it, it obviously will disconnect BUT then it doesn't connect to any other WiFi in range unless I turn the screen on first. That thread I linked you to lists the same exact problem.
I appreciate the help.
Click to expand...
Click to collapse
Can you tell me again what your modem is using the app?

lennyz1988 said:
can you tell me again what your modem is using the app?
Click to expand...
Click to collapse
l720vpuamf9

totbl said:
l720vpuamf9
Click to expand...
Click to collapse
Your modem didn't update. Try reflashing the firmware you just flashed. Only this time do it twice. So flash it, reboot phone, flash it again.

Lennyz1988 said:
Your modem didn't update. Try reflashing the firmware you just flashed. Only this time do it twice. So flash it, reboot phone, flash it again.
Click to expand...
Click to collapse
I was on L720VPUAMDC when I made this thread, then after Odin it's on L720VPUAMF9. That's the latest, no? What do you mean it didn't update? Anway, I'll try again twice.

Lennyz1988 said:
Your modem didn't update. Try reflashing the firmware you just flashed. Only this time do it twice. So flash it, reboot phone, flash it again.
Click to expand...
Click to collapse
It's the same as it was before, kind sir.

totbl said:
I was on L720VPUAMDC when I made this thread, then after Odin it's on L720VPUAMF9. That's the latest, no? What do you mean it didn't update? Anway, I'll try again twice.
Click to expand...
Click to collapse
L720VPUAMF9 = Jelly Bean 4.2.2
So not, it's still a very old modem.
http://forum.xda-developers.com/galaxy-s4-sprint/development/rom-stock-od2-odin-flashable-t3133661

Oh *slaps self* I see. I upgraded the modem to NG2. Still the same issue unfortunately. I really thought we had it this time. What else could it be?

Lennyz1988 said:
L720VPUAMF9 = Jelly Bean 4.2.2
So not, it's still a very old modem.
http://forum.xda-developers.com/galaxy-s4-sprint/development/rom-stock-od2-odin-flashable-t3133661
Click to expand...
Click to collapse
*edit* Actually...IT WORKS! It connects to a known WiFi network when the screen is off in exactly 4 minutes. Much better than before where it was not at all or hours. You've been completely helpful, dude. Thank you. I just have one more question, is there anyway for it to poll faster with the screen off? As in, can I get it to connect to an open WiFi network under 4 minutes or instantly?

Related

[Q] Could not establish connection, tried everything! Help Required

I was using Android L port. Everything was working fine. Yesterday I installed Panaroid 4.5. I was unable to sign in to my google account and error was Couldn't establish connection.
Then I opted for mobile data connection and sign in was successful.
Issue is Play Store is not working over WiFi. I have tried following things:
Reboot
Factory Reset
Editing Hosts
Deleting Hosts
Using hosts file from Android L Rom
What you guys suggest me? Need HELP!!
What device,i337 or i337m ate you on? And what firmware version are you on? L can cause issues where you might have to Odin the stock firmware and start over
Sent from my Nexus 5 using XDA Free mobile app
jd1639 said:
What device,i337 or i337m ate you on? And what firmware version are you on? L can cause issues where you might have to Odin the stock firmware and start over
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Nexus 4 has ODIN support? I dont think so.
jd1639 said:
What device,i337 or i337m ate you on? And what firmware version are you on? L can cause issues where you might have to Odin the stock firmware and start over
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Sorry, wrong forum. no Odin on n4. But there's no port of L on the n4, there's just the preview firmware and that's what threw me. You're probably going to have to flash 4.4.4 firmware in fastboot.
Sent from my Nexus 5 using XDA Free mobile app
jd1639 said:
Sorry, wrong forum. no Odin on n4. But there's no port of L on the n4, there's just the preview firmware and that's what threw me. You're probably going to have to flash 4.4.4 firmware in fastboot.
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Just tried it.. Also flashed stock recovery and after that flashed cwm.
Still the same issue
jd1639 said:
Sorry, wrong forum. no Odin on n4. But there's no port of L on the n4, there's just the preview firmware and that's what threw me. You're probably going to have to flash 4.4.4 firmware in fastboot.
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
I have also now installed stock img by townloading tar from google. Still no luck
So you have connection issues with wifi? What about bluetooth? Does this work?
I either suggest to flash the latest radio or to reset your router. [emoji106] [emoji6]
CCody said:
So you have connection issues with wifi? What about bluetooth? Does this work?
I either suggest to flash the latest radio or to reset your router. [emoji106] [emoji6]
Click to expand...
Click to collapse
Yes!!!! Flashing radio fixes it! Thank you!
CCody said:
So you have connection issues with wifi? What about bluetooth? Does this work?
I either suggest to flash the latest radio or to reset your router. [emoji106] [emoji6]
Click to expand...
Click to collapse
xaeem said:
I have also now installed stock img by townloading tar from google. Still no luck
Click to expand...
Click to collapse
It worked well for a while. But i am experiencing no neccention and a retry button in play store again..
Bluetooth works fine abd I also have reset my router.
What can be the issue?
Than I would suggest you to reset your router. Just power it off for some minutes and then power it on again
CCody said:
Than I would suggest you to reset your router. Just power it off for some minutes and then power it on again
Click to expand...
Click to collapse
Done it many time still same issue
xaeem said:
Done it many time still same issue
Click to expand...
Click to collapse
That is really really strange then...
I am bumped right now and dont know what to do else. I will do some researches and will report back, alright?
CCody said:
That is really really strange then...
I am bumped right now and dont know what to do else. I will do some researches and will report back, alright?
Click to expand...
Click to collapse
Sure! That would be great if you come up with some solution to this!
Here I am again and I am not sure if I brought the solution for your problem with me.
Truth be told the common solution for WiFi issues is either to flash the latest radio, do a factory reset or reset your router. In your case nothing of this works, so there arent many other options left. We must assume that there is something messed up with your WiFi module.
But try the following first:
- Check if your date and time is correct. Sometimes your device wont let access the internet, because the time/date isnt sync with the time/date on your router
- Did you do anything with your bandwith? There are 5 Ghz and 2.4 Ghz. You may change it to 'Auto' in your advanced WiFi settings.
- Also uncheck 'avoid poor connections' and turn off WiFi optimization
And to be sure: What exactly happens, when you try to connect to your WiFi? In the best case it says 'Connected', but there is also 'obtaining IP address'. Screenshots pls! And other devices can access internet through WiFi?
I hope something of this works and now I am really bumped. May someone else could help?

[Q] No Audio

Hello, a few days ago, my brother rooted his galaxy S4 with Odin, then he decided to go back to the stock version without root permission. But during the installation of the firmware, the computer is turned off. So I decided to try again to install the firmware with Odin. The installation went fine, but the audio and the wi-fi didn't work. So I decided to install a recovery (jflte cwm 6.0.5.0) and install the latest nightly of CyanogenMod 11 Now the wi-fi works perfectly, but the audio doesn't work. I have done many tests reading on the forum, I also changed kernel but nothing.
Can anyone help me? Thanks in advance!
Costantinus said:
Hello, a few days ago, my brother rooted his galaxy S4 with Odin, then he decided to go back to the stock version without root permission. But during the installation of the firmware, the computer is turned off. So I decided to try again to install the firmware with Odin. The installation went fine, but the audio and the wi-fi didn't work. So I decided to install a recovery (jflte cwm 6.0.5.0) and install the latest nightly of CyanogenMod 11 Now the wi-fi works perfectly, but the audio doesn't work. I have done many tests reading on the forum, I also changed kernel but nothing.
Can anyone help me? Thanks in advance!
Click to expand...
Click to collapse
I am facing the same problem, I've been running CM 11 nightlies for a looong time though.
I hope that we somehow can get an easy fix for this.
All audio
For you guys, does all of your audio don't work, like you can't call, play YouTube or music?
Lakajadiwa said:
For you guys, does all of your audio don't work, like you can't call, play YouTube or music?
Click to expand...
Click to collapse
Yes, the dialer doesn't work, in the audio settings I can't hear the different ring tones. If I raise the volume up you I can't hear the classic " beep " .
So completely without audio.
Thank god, I thought I was the only one, no fix either as far as i know. Looked on the internet for one for an hour yesterday too
Costantinus said:
Yes, the dialer doesn't work, in the audio settings I can't hear the different ring tones. If I raise the volume up you I can't hear the classic " beep " .
So completely without audio.
Click to expand...
Click to collapse
Yea same here.. Hopefully we will find a fix soon.
My sound came back yesterday, but disappeared this morning again, sadly.
FOUND IT!
Neo3000x said:
Yea same here.. Hopefully we will find a fix soon.
My sound came back yesterday, but disappeared this morning again, sadly.
Click to expand...
Click to collapse
Its a modem file that is responsible for it,
http://forum.xda-developers.com/showthread.php?p=50786512#post50786512
If you cannot find your modem file just type in your model name with modem to goodle, install with ODIN good luck!
Lakajadiwa said:
Its a modem file that is responsible for it,
http://forum.xda-developers.com/showthread.php?p=50786512#post50786512
If you cannot find your modem file just type in your model name with modem to goodle, install with ODIN good luck!
Click to expand...
Click to collapse
Hmm I just installed the latest modem on my phone today, trying to fix it - But it didn't work.
I installed XXUGNH8 (latest) - Which one did you install?
Match
You need one to match your phone my was a sgh-i377m modem so an mvlufnc1
Lakajadiwa said:
You need one to match your phone my was a sgh-i377m modem so an mvlufnc1
Click to expand...
Click to collapse
Well, I just have the international GT-I9505, so I think I have the right one installed?
Neo3000x said:
Well, I just have the international GT-I9505, so I think I have the right one installed?
Click to expand...
Click to collapse
Well if it doesn't work it probably is the wrong one.
Lakajadiwa said:
Well if it doesn't work it probably is the wrong one.
Click to expand...
Click to collapse
As I have the international model, I am quite sure that it is the right one, and sammobile.com agrees with me.
PDA: I9505XXUFNB9
CSC: I9505NEEFNB2
MODEM: I9505XXUFNB9
Neo3000x said:
As I have the international model, I am quite sure that it is the right one, and sammobile.com agrees with me.
PDA: I9505XXUFNB9
CSC: I9505NEEFNB2
MODEM: I9505XXUFNB9
Click to expand...
Click to collapse
damn, maybe try different modems idk..... Cause I think that the modem is the problem, we'll at least for me it was.
I tried to flash different modem with Odin, but nothing.
I tried:
XXUGNG2
XXUGNE5
XXUBMF8
But no, the audio doesn't work!
Hi,
Yes the problem is related to modem! But to get it working again it's not necessary to go to the latest modem, actually it may not be the solution! Try installing the Galaxy Info app from Play Store ( https://play.google.com/store/apps/details?id=org.vndnguyen.phoneinfo) and check your bootloader version, with it you'll have to flash the same version of modem as the bootloader you have.
If that doesn't solve the problem, you'll have to upgrade your modem, just change one version above and keep trying until it works. I know it's tedious, but that's the method I use and always worked .
~Lord
XxLordxX said:
Hi,
Yes the problem is related to modem! But to get it working again it's not necessary to go to the latest modem, actually it may not be the solution! Try installing the Galaxy Info app from Play Store and check your bootloader version, with it you'll have to flash the same version of modem as the bootloader you have.
If that doesn't solve the problem, you'll have to upgrade your modem, just change one version above and keep trying until it works. I know it's tedious, but that's the method I use and always worked .
~Lord
Click to expand...
Click to collapse
I've installed the Galaxy info app, and my bootloader was equal to XXUGNG2.
So, I've flashed with Odin the GNG2 modem first, then the 4 and the 8. But the audio still doesn't work.
So, I've flashed with the GNG8 modem his correlated bootloader, but the problem still persists. Any ideas?
Costantinus said:
I've installed the Galaxy info app, and my bootloader was equal to XXUGNG2.
So, I've flashed with Odin the GNG2 modem first, then the 4 and the 8. But the audio still doesn't work.
So, I've flashed with the GNG8 modem his correlated bootloader, but the problem still persists. Any ideas?
Click to expand...
Click to collapse
Hi,
Not many ideas here. But anyway, just in case you want to try I'm using XXUFNB8 bootloader with the XXUFNB8 modem. If you are running a bootloader newer than mine don't even consider changing your bootloader, but maybe the modem may help.
If you are sure you tried as many possible combinations of BL and MDM, then try flashing another zip, as this one may be corrupted...
~Lord
"Dream On! Dream Until Your Dreams Come True!" - Dream On (Aerosmith)
Sent from my GT-I9505
My sound still comes and goes as it pleases.. It seems like it is having its own life - Sometimes it stays for hours, then goes away for 10 minutes and sometimes it's the other way around.
Anyway, I've tried the phone-info app, and my bootloader (as expected) is: I9505XXUFNB9.
My Baseband version is also I9505XXUFNB9. PDA and CSC are both blank.
It still bugs me a lot I must say...
up, same problem here.
I've tried everything.. Any news?
So.. Just wanted to update you guys..
I've now been "with sound" for about 20 hours, which is a new record, and I think that it will stay.
What I did:
Wiped EVERYTHING - Internal SD, External SD, Data, etc.
Flashed EuroSkank 22-10-2014
Crossed my fingers
...
Payoff!

[Q] 4.4.4 baseband drivers?

Anyone have these or know where to get them? I've looked around to no avail. Since CM didn't upgrade them we all have to do it ourselves... I'd rather not have to go through the agony of going back to stock and probably not doing it right, so figured I'd try flashing the drivers. Real tired of my GPS not working at all, and all the other radios just barely hanging on.
Your help is appreciated!
What do you mean by baseband drivers? Do you mean modem? Then you can flash them yourself true Odin. Keep in mind that CM is experimental, so that could be the problem of your GPS problem.
Lennyz1988 said:
Then you can flash them yourself true Odin.
Click to expand...
Click to collapse
This is what I intend to do, but where do I find them?
Lennyz1988 said:
Keep in mind that CM is experimental, so that could be the problem of your GPS problem.
Click to expand...
Click to collapse
There has been a JIRA ticket open on it since October with many users and different phones having the problem. Anyone who has fixed it themselves has done whatever specific thing for each phone needs to be done to update the modems. It doesn't seem like CM is going to include the modem drivers in a nightly so it's up to each user to do it themselves .
Madnapali said:
This is what I intend to do, but where do I find them?
There has been a JIRA ticket open on it since October with many users and different phones having the problem. Anyone who has fixed it themselves has done whatever specific thing for each phone needs to be done to update the modems. It doesn't seem like CM is going to include the modem drivers in a nightly so it's up to each user to do it themselves .
Click to expand...
Click to collapse
No and it's a good thing that they don't. Hence it's not even possible.
Here is the modem thread. http://forum.xda-developers.com/showthread.php?t=2192025
Lennyz1988 said:
No and it's a good thing that they don't. Hence it's not even possible.
Here is the modem thread. http://forum.xda-developers.com/showthread.php?t=2192025
Click to expand...
Click to collapse
Thanks much! I'll hopefully get to try this today at work.
What I need doesn't appear to be in here, actually looks like my code is a few versions back. I'm gonna need to do it the hard way and flash 4.4.2. Thanks, though.
Madnapali said:
What I need doesn't appear to be in here, actually looks like my code is a few versions back. I'm gonna need to do it the hard way and flash 4.4.2. Thanks, though.
Click to expand...
Click to collapse
What you need to do is just pick one of the latest modems. If you don't know which one just try a few 4.4.2 modems. It doesn't have to be exact.
Lennyz1988 said:
What you need to do is just pick one of the latest modems. If you don't know which one just try a few 4.4.2 modems. It doesn't have to be exact.
Click to expand...
Click to collapse
I just got done installing the latest firmware for my specific phone, and am restoring my CM backup now. I also found that they stopped using a comprehensive jflte package and there are now new ones for each type. They stopped doing that late last year and apparently restarted it this month. I may try installing that tonight.
Thanks!

HELP! WiFi Issues

Sorry I'm a noon, don't do all those font sizes and colours and pictures aha but basically... I've been on CyanogenMod for about a year now and have never had WiFi issues. Been using cm12 nightlies for most of this year with no problem however, after updating my nightly the past two days I've been experiencing WiFi Drops happening every min and a half or so. So annoying. I've used Wifix apps etc, no luck. I've reverted to old night lies I used to run without any problems however the problem stays. I've consider flashing back to TouchWiz to see if that helps it but I really don't want to
Can someone please help me. My phone is on contract and my bill is overdue so I won't have mobile data until it's cleared (around June) so if I don't have WiFi, I'm screwed.
S4
tyrelldk_ said:
Sorry I'm a noon, don't do all those font sizes and colours and pictures aha but basically... I've been on CyanogenMod for about a year now and have never had WiFi issues. Been using cm12 nightlies for most of this year with no problem however, after updating my nightly the past two days I've been experiencing WiFi Drops happening every min and a half or so. So annoying. I've used Wifix apps etc, no luck. I've reverted to old night lies I used to run without any problems however the problem stays. I've consider flashing back to TouchWiz to see if that helps it but I really don't want to
Can someone please help me. My phone is on contract and my bill is overdue so I won't have mobile data until it's cleared (around June) so if I don't have WiFi, I'm screwed.
S4
Click to expand...
Click to collapse
Have you tried flashing a new modem? This generally fixes wifi (and sound issues if there are any)
I barely know what a modem is haha but if that's the case, I'll try today.
Here you have a list of modems. Read the topic as it also has some info and the flashing guide.
You need to go to sammobile firmware checker and input your phone model, country and carrier. Then it will show you the correct firmware for your country and carrier. Based on that, download the modem. Make sure you get the latest modem. If you can't find the latest modem on the linked thread, there was another thread with all the latest modems, but I can't seem to find it anymore.
GDReaper said:
Here you have a list of modems. Read the topic as it also has some info and the flashing guide.
You need to go to sammobile firmware checker and input your phone model, country and carrier. Then it will show you the correct firmware for your country and carrier. Based on that, download the modem. Make sure you get the latest modem. If you can't find the latest modem on the linked thread, there was another thread with all the latest modems, but I can't seem to find it anymore.
Click to expand...
Click to collapse
I'm on 5.02 CM12, I downloaded the latest modem for my GT-I9505 which matched the firmware code for a 4.4.2 S4 however still no luck ffs. This is really annoying, i don't know how my WiFi could jist shut off on me like that :/. Looks like I'm going to have to buy myself a new phone then. Can't use my mobile data for a couple months as my carrier has blocked me until I pay off my bill and now with my wifi disconnecting every 2 mins, I basically cannot use the internet. So frustrated.
I've flashed new nightlies, changed baseband versions, factory reset my phone and still no luck. What makes things worse is i cannot see any other threads with people in my postition so help is so minimal :/. Annoyed is an understatement.
tyrelldk_ said:
Sorry I'm a noon, don't do all those font sizes and colours and pictures aha but basically... I've been on CyanogenMod for about a year now and have never had WiFi issues. Been using cm12 nightlies for most of this year with no problem however, after updating my nightly the past two days I've been experiencing WiFi Drops happening every min and a half or so. So annoying. I've used Wifix apps etc, no luck. I've reverted to old night lies I used to run without any problems however the problem stays. I've consider flashing back to TouchWiz to see if that helps it but I really don't want to
Can someone please help me. My phone is on contract and my bill is overdue so I won't have mobile data until it's cleared (around June) so if I don't have WiFi, I'm screwed.
S4
Click to expand...
Click to collapse
GDReaper said:
Have you tried flashing a new modem? This generally fixes wifi (and sound issues if there are any)
Click to expand...
Click to collapse
Hi mate ,
Try flashing a new modem it never hurts but wifi is kernel control , see what kernel you had before when it was working good ,check if it was changed in the las upgrade... reflash old kernel again or try a different one
MAX 404 said:
Hi mate ,
Try flashing a new modem it never hurts but wifi is kernel control , see what kernel you had before when it was working good ,check if it was changed in the las upgrade... reflash old kernel again or try a different one
Click to expand...
Click to collapse
I really can't remember what date I was on when it was working fine
tyrelldk_ said:
I really can't remember what date I was on when it was working fine
Click to expand...
Click to collapse
Go back to stock firmware if you haven't updated the bootloader.
If it works fine on stock, then re-root your phone and try again with CM12.
GDReaper said:
Go back to stock firmware if you haven't updated the bootloader.
If it works fine on stock, then re-root your phone and try again with CM12.
Click to expand...
Click to collapse
Updated by bootloader earlier today :s was told I had to do that to flash a new modem... Can/should I still flash back to touchwiz and if so, how do I? And say I go back to touchwiz and it Stoll doesn't work, my phone is basically unusable isn't it?
tyrelldk_ said:
Updated by bootloader earlier today :s was told I had to do that to flash a new modem... Can/should I still flash back to touchwiz and if so, how do I? And say I go back to touchwiz and it Stoll doesn't work, my phone is basically unusable isn't it?
Click to expand...
Click to collapse
Hi ,
yes can still flash an stock rom....but why you do not try first
flash a different modem
flash a different kernel
If every thing else fails flash a stock rom, what model S4 do you have I9505?
there are a few kernels around like
http://forum.xda-developers.com/showthread.php?t=2590246
and modems check here
http://forum.xda-developers.com/showpost.php?p=50965837&postcount=2627
Back up first most important EFS folder
http://forum.xda-developers.com/android/apps-games/app-samsung-efs-imei-partition-backup-t2955110
MAX 404 said:
Hi ,
yes can still flash an stock rom....but why you do not try first
flash a different modem
flash a different kernel
If every thing else fails flash a stock rom, what model S4 do you have I9505?
there are a few kernels around like
http://forum.xda-developers.com/showthread.php?t=2590246
and modems check here
http://forum.xda-developers.com/showpost.php?p=50965837&postcount=2627
Back up first most important EFS folder
http://forum.xda-developers.com/android/apps-games/app-samsung-efs-imei-partition-backup-t2955110
Click to expand...
Click to collapse
I flashed a modem *read above* and nothing's happened... I even tried flashing WiFi fixes and it hasn't done anything
I didn't know kernels could fix a WiFi problem, I might try that.
tyrelldk_ said:
I flashed a modem *read above* and nothing's happened... I even tried flashing WiFi fixes and it hasn't done anything
I didn't know kernels could fix a WiFi problem, I might try that.
Click to expand...
Click to collapse
WIFI is kernel controlled...
MAX 404 said:
WIFI is kernel controlled...
Click to expand...
Click to collapse
Hi, I flashed that kernel and the same problem is occuring D'you have any other ideas? Sorry if i'm being annoying
tyrelldk_ said:
Hi, I flashed that kernel and the same problem is occuring D'you have any other ideas? Sorry if i'm being annoying
Click to expand...
Click to collapse
Check and see i if power save is on , if so switch it off
Dial *#0011#
This will take you into the Service Mode
Press the left bottom key new menu will show
Select Wifi... Once in the Wifi settings , turn it off...
Do you have to refresh the password? just in case check this
Go to /system
Open the built.prop
search for ro.securestorage.support
If it says true , change to false
Save and reboot
Also if you are skill check the antenna cable inside the phone..maybe is just loose
MAX 404 said:
Check and see i if power save is on , if so switch it off
Dial *#0011#
This will take you into the Service Mode
Press the left bottom key new menu will show
Select Wifi... Once in the Wifi settings , turn it off...
Do you have to refresh the password? just in case check this
Go to /system
Open the built.prop
search for ro.securestorage.support
If it says true , change to false
Save and reboot
Also if you are skill check the antenna cable inside the phone..maybe is just loose
Click to expand...
Click to collapse
Grrr... Power save is off
When I dial that code, the phone does nothing...does the fact that I cannot turn on my mobile data stop me from dialing this code? Also, does the fact that I'm on cm12 and not on touchwiz stop me from using this?
& I have no password on my phone and there was no ro.securestorage.support ... I found this "ro.wifi.channels=" if that helps?
tyrelldk_ said:
Grrr... Power save is off
When I dial that code, the phone does nothing...does the fact that I cannot turn on my mobile data stop me from dialing this code? Also, does the fact that I'm on cm12 and not on touchwiz stop me from using this?
& I have no password on my phone and there was no ro.securestorage.support ... I found this "ro.wifi.channels=" if that helps?
Click to expand...
Click to collapse
The code should work maybe is because CM , well last option would be to flash a stock rom and see how it goes........how you know power save is off?
BTW in your wifi setting there is no proxy ? did you try to delete settings and do a new one?
MAX 404 said:
The code should work maybe is because CM , well last option would be to flash a stock rom and see how it goes........how you know power save is off?
BTW in your wifi setting there is no proxy ? did you try to delete settings and do a new one?
Click to expand...
Click to collapse
Damn really didn't want it to get to this, will I lose root access too?
Isn't power save automatically off in the settings? It gives you the option to use it in low battery
& I don't know how to check if there is or isn't proxy. What do you mean by deleting settings?
tyrelldk_ said:
Updated by bootloader earlier today :s was told I had to do that to flash a new modem... Can/should I still flash back to touchwiz and if so, how do I? And say I go back to touchwiz and it Stoll doesn't work, my phone is basically unusable isn't it?
Click to expand...
Click to collapse
If you updated bootloader then you can't go back to kitkat roms. Only the 5.0 lollipop roms. But Samsung hasn't released the official update in all countries.
If it still doesn't work, even with official firmware, then it might be hardware related. Maybe even your wifi router.
MAX 404 said:
Hi ,
yes can still flash an stock rom....but why you do not try first
flash a different modem
flash a different kernel
If every thing else fails flash a stock rom, what model S4 do you have I9505?
there are a few kernels around like
http://forum.xda-developers.com/showthread.php?t=2590246
and modems check here
http://forum.xda-developers.com/showpost.php?p=50965837&postcount=2627
Back up first most important EFS folder
http://forum.xda-developers.com/android/apps-games/app-samsung-efs-imei-partition-backup-t2955110
Click to expand...
Click to collapse
He said he tried other modems.
GDReaper said:
If you updated bootloader then you can't go back to kitkat roms. Only the 5.0 lollipop roms. But Samsung hasn't released the official update in all countries.
If it still doesn't work, even with official firmware, then it might be hardware related. Maybe even your wifi router.
Click to expand...
Click to collapse
Hi, i'm going to flash lollipop touchwiz onto my phone using this http://www.ibtimes.co.uk/android-5-...-s4-lte-how-manually-install-via-odin-1492230.
Anything i should know/do before doing this?
Did you flash an alternate kernel?
Wifi issues are often kernel related. Not always...but often.

i9505 loses wifi connection again and again

Hey guys,
I'm using a i9505 as a media device at home. As opposed to all my other devices this phone loses its connection often every few minutes and also often doenst reconnect itsself. Its super annoying. I cant stream nothing or make a internet call.
Has anyone any idea? Flash a modem?
I'm on LOS 16.1
slev!n said:
Has anyone any idea? Flash a modem?
Click to expand...
Click to collapse
Flashing a modem won't hurt. You should be on the last one for your device anyway.
Strephon Alkhalikoi said:
Flashing a modem won't hurt. You should be on the last one for your device anyway.
Click to expand...
Click to collapse
Does it really not matter whether I download the variant of my country (...HPK2) or the latest without my country code (... HQK1)?
slev!n said:
Does it really not matter whether I download the variant of my country (...HPK2) or the latest without my country code (... HQK1)?
Click to expand...
Click to collapse
Your carrier stopping at HPK2 simply means they didn't bother putting any work into what to them is a minor update. HQK1 will work on your device without a problem.
Hey again, I flashed the latest STOCK I could find on my i9505. But with STOCK i even cant enable wifi. I already did a factory resst but it doenst help.
Should I try flashing any modem? Or what option do I still have?
slev!n said:
Hey again, I flashed the latest STOCK I could find on my i9505. But with STOCK i even cant enable wifi. I already did a factory resst but it doenst help.
Should I try flashing any modem? Or what option do I still have?
Click to expand...
Click to collapse
If you unpack the ROM package I believe you will find a .bin file for the wifi you can flash in Odin.

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