Develop Bugs

Wi-Fi Not shutting off and keeping phone awake?

Despite checking off Never, my phone is keeping Wi-Fi active and the phone isn't sleeping. Is there a way to fix this glitch? Also despite having an airave at home, my device shows constantly under the battery setting that i have no mobile signal. This is possibly making the phone search for signal, and explains why it often find a weird roaming signal. Anyone know any fixes?
[email protected]

U might have that sprint optimization enable disable it should be under mobile network settings
Sent from my EVO using xda premium

Settings - More Settings - Mobile Networks - Connections Optimizer - Uncheck Box

ProCision said:
Settings - More Settings - Mobile Networks - Connections Optimizer - Uncheck Box
Click to expand...
Click to collapse
Yep, what this guy said.
It was bugging me for a while too, not sure if its a feature of 4.1.x Android, but my understanding is if the device senses a Wi-Fi connection it turns on the radio and might ask you to try to configure. At the office, while driving, etc etc.

cuteman said:
Yep, what this guy said.
It was bugging me for a while too, not sure if its a feature of 4.1.x Android, but my understanding is if the device senses a Wi-Fi connection it turns on the radio and might ask you to try to configure. At the office, while driving, etc etc.
Click to expand...
Click to collapse
Ive disabled it countless times... it turns itself back on. There are other tiny little hickups Im having. The first device was flawless until an App Installation went corrupt and ruined it... Now I actually have a minor dud. Gotta try for "third times a charm"...

BillJr106 said:
Ive disabled it countless times... it turns itself back on. There are other tiny little hickups Im having. The first device was flawless until an App Installation went corrupt and ruined it... Now I actually have a minor dud. Gotta try for "third times a charm"...
Click to expand...
Click to collapse
I just noticed that too. It does, or seems to want to turn itself back on. Pretty lame of Sprint to do this if you ask me.
Sent from my SPH-L900 using Tapatalk 2

cuteman said:
Yep, what this guy said.
It was bugging me for a while too, not sure if its a feature of 4.1.x Android, but my understanding is if the device senses a Wi-Fi connection it turns on the radio and might ask you to try to configure. At the office, while driving, etc etc.
Click to expand...
Click to collapse
It is a feature of the OTA Samung update that put your device to LJC .. After you installed the update whether it was Automatic over the air or even manually once you device said Update installation successful then a box was up that you had to hit "Ok" and it was the box that read about the new Sprint Optimization option.

So, if you have the wifi on in the house it still causes a problem? Or is this an issue when you are out and have the wifi off, and it still searches for wifi location no matter what killing the battery?

[Q] Endless scanning wifi and other wifi issues

Does anyone else have there phone continuously scanning wifi, once every 5 seconds or so, even when connected? Just go into wifi settings and see if it is scanning often. Additionally i get a lot of "Connected to abc network" messages in other applications when i thought my connection was established already long ago. And often find that even though im connected it is not passing data. I get ping times in the 200 + range to yahoo.com when a computer on the same network gets 50ms ping times. The wifi is the only issue i have with the phone, but my old S3 did not act this way and i want to know what everyone else is seeing, so i can send it back or get it fixed.
Thank you!

Check in your settings menu.
Settings>Mobile networks>connections optimizer.
Make sure thats unchecked
Sent from my SPH-L900 using Tapatalk 2

yeah it is turned off and the wifi power saving mode is off too *#0011# menu one. Same deal though...

Are you rooted? Maybe fixing permissions in recovery would help? Pretty sure it did for me.

I recently have been having this issue. 4.1.2 LJC trying to figure it out.. Reboots seen to temp fix it.. Just tried fix permissions so I had to reboot but will chime back in if it completely is fixed
Sent from my weapon of choice.

w7excursion said:
Are you rooted? Maybe fixing permissions in recovery would help? Pretty sure it did for me.
Click to expand...
Click to collapse
How would fixing permissions, fix wifi scanning?

Couldn't tell you it just did. Resetting my phone and router didn't do it.

One solid day after fixing permissions seems to have fixed it Lol. Did you happen to flash some morphology? Just asking
Sent from my weapon of choice.

Another option would be to set up profiles. And disable wifi all together in the profile you use when your out and about. And enable it in the profile you use at home with your wifi. And then just switch between the profiles.
Sent from my Sick Ass Galaxy Note 2
They had a broken keyboard,
I bought a broken keyboard;
Bought a skeetblanket,
And then I bought a knee board
*Macklemore - thrift shop

Didn't think I had WiFi issues until today.

So myself and the wife are at Applebee's. She gets on WiFi no issues and I can't. See below screen shots. I even rebooted my device to no avail. Mine was always unstable and would drop. Hers was solid see.pics below. Mines the N900T and hers is the N900A. Both using Att sim cards.
I'm thinking Samsung used different chip sets sources for their wifi.
Sent from my SM-N900T

Doubtful that they used different chipsets. So you are both on stock roms, or have you been flashing stuff on yours?

Have you already factory reset your phone? A lot of people have had minor issues and flashing stock firmware or factory reset has helped some issues.
sent from my sm-9005.

Me too I hate it... That and the range my phone has is terrible
Sent from my SM-N900T using Tapatalk

Sitting by pool, about 60ft and 3 walls from the access point. SSID name is "Disconnected" (really messes with the neighbors). Access point is well sitted, up high in my home office fairly new with current firmware..
You can see the 5Ghz version of the AP in the list as well.

You might have to go back to factory rom, or turn your wifi off and disable always scanning. It may be trying to find a better network.
Sent from my SCH-S738C using xda app-developers app

krelvinaz said:
Doubtful that they used different chipsets. So you are both on stock roms, or have you been flashing stuff on yours?
Click to expand...
Click to collapse
Both stock roms.
Sent from my SM-N900T

deeznutz1977 said:
Me too I hate it... That and the range my phone has is terrible
Sent from my SM-N900T using Tapatalk
Click to expand...
Click to collapse
My range is very respectable. But unfortunately today I discovered this issue. It would very slowly connect then disconnect even quicker. Two stock phones on same WiFi in my neighborhood grill lol.
Sent from my SM-N900T

colganx said:
You might have to go back to factory rom, or turn your wifi off and disable always scanning. It may be trying to find a better network.
Sent from my SCH-S738C using xda app-developers app
Click to expand...
Click to collapse
Always scannig is off but in WiFi it does appear to scanning all the time.
Sent from my SM-N900T

Let me do some reading up on it. Ill get back to you.
---------- Post added at 01:46 AM ---------- Previous post was at 01:28 AM ----------
Limeybastard said:
My range is very respectable. But unfortunately today I discovered this issue. It would very slowly connect then disconnect even quicker. Two stock phones on same WiFi in my neighborhood grill lol.
Sent from my SM-N900T
Click to expand...
Click to collapse
Unfortunately, i think its just the hardware. Your phone might have two antennas and if you find your correct kernel, you could change it to run off the best antenna possible. might take some testing and such. if all else fails go to your service provider for a evaluation

colganx said:
Let me do some reading up on it. Ill get back to you.
---------- Post added at 01:46 AM ---------- Previous post was at 01:28 AM ----------
Unfortunately, i think its just the hardware. Your phone might have two antennas and if you find your correct kernel, you could change it to run off the best antenna possible. might take some testing and such. if all else fails go to your service provider for a evaluation
Click to expand...
Click to collapse
Thanks for taking the time to look into this. I never really had WiFi issues before until today in the restaurant. If it wasn't for my wife having the same phone I would have addsumed it was the stores router.
Sent from my SM-N900T

Your quite welcome, always glad to help. My old Galaxy would malfunction the same way sometimes. Sometimes between my router and the neighbors and Other times on random hotspots. Sometimes you may have to go in the browser and accept a terms of use. If you figure out the problem, send me a pm.
Cheers - Colgan

colganx said:
Your quite welcome, always glad to help. My old Galaxy would malfunction the same way sometimes. Sometimes between my router and the neighbors and Other times on random hotspots. Sometimes you may have to go in the browser and accept a terms of use. If you figure out the problem, send me a pm.
Cheers - Colgan
Click to expand...
Click to collapse
Yes, correct. Once after connecfting to the Wifi Router I need to launch the stock Samsung browser to accept their terms and conditions, this process in itself takes about 5 mins or hangs proir to terms and conditions screen it boots me off the WiFi and says its unstable or too slow per my original post.

Its just that theres too many people on the network, Thats the only issue. It mainly does this on public networks. So it is not a phone problem its a client network problem :thumbup:

I had this briefly on my home WiFi. Wasnt a client network as I allow 10 objects to be on mine. Its water under the bridge but that is a possibility on a public network.
sent from my sm-9005.

I had this problem in spades.
It has nothing to do with a public hotspot or router.
I'm not entirely sure it's not on some type of pattern yet, like 7 or 8 days.
I'll bet you that if you had powered off your phone for a few minutes and turned it back on, the problem would have been gone.
I am pretty sure this is something going on with the Radios in these phones.
Everytime mine gets flaky it usually resolves with a power down for a few minutes.
The other problem I've seen is that if I shut down wifi a number of times in a row because I want to use Mobile data, it will then start not staying connected when I want to use it.
I have to power off and power on and re enter the WPA2 password.
After seeing another thread with some other strange issues, I'm convinced there is a HW or SW issue related to the wifi radio.
I have seen the message exactly like you have here on a AP at my house that only has 2 clients on it and performs flawlessly.
It wouldn't connect to attwifi at Sam's yesterday for some reason.
This is one of the reasons I won't ROM it yet either. I'm still not convinced that it might not go home to the mothership at some point.

Note 3 WiFi Permissions issue

Got a Note 3 right after they came out.
Had an issue with the first one, not the least of which was the pervasive WiFi disconnect issue many of us have been seeing; in my case also had extreme battery drop all of a sudden - like 45% in an hour - not abnormal use.. So, swapped it about 20 days ago for another one.
Seeing the same WiFi connectivity issue I saw with the first one and then all of a sudden got a pop up :
"Prevention Information"
An application has been forced to stop for an unauthorized attempt to access system in your device. It may be safe to delete an application obtained from an unauthorized route. Check Now? (with a Do not show for 30 days check box; Cancel or Ok buttons)
If you click cancel pop up comes back after about 10 mins more or less; if you click Ok you get brought to a list of what you have downloaded to weed through whatever you've installed.
Full disclosure: This device is out of the box, not rooted; stock Rom. Only none play store apps installed were Adobe Flash and Amazon App store. I use WiFi extensively for WiFi calling at my office, since there isn't a carrier on the planet can get me a decent signal. I live and die behind WiFi calling it's why I went T-Mobile to start with.
* So I proceed to scan hell out of this, using Lookout, Sophos and MalwareBytes can't find anything..
* Ok so I uninstall everything I've been experimenting with thinking maybe the mix is a problem. Doesn't solve it
* So then I do a software Backup and restore - and go to put back the one app I need the most for my Hosted Exchange connectivity to work the best for my needs adding them back one at a time to see what's causing this . Of course I turn WiFi back on to connect to my network and signing into my Google Account Google Play takes off to restore all my stuff and do all updates for anything stock on the phone. (Phone Vendors WAKE UP; Stop making the default Google Play behavior Up Date Automatically when on WiFi, let the user decide before taking off to do what you think is best) And - The pop up is back just as I get the 1 app I need on the phone. (email support for the app saying it's them - MANY APOLOGIES to Nitro Desk, it's not them.
* Very long story and many soft and hard resets, to try control the behavior, later; including running 2 miles up the road to control Google Play auto update on WiFi, but, only be on the T-Mobile network for the initial startup....
With nothing but a minimal start-up and No Apps installed other than what Google Play demanded to be able to work at all out of the box when signing in; once I got the phone back to the office and started WiFi for my network - Blammo ! the pop up is back.
This "error" or warning message is from the base Android/Samsung/T-Mobile deployment configuration for a Note 3 when starting WiFi at all.
So, I happen to be near the T-Mobile store I bought this at and go in to tell them about this and the guys there running a Note 3 say they all get the same issue.
My conclusion is that this is a miss-configuration of software and/or permissions at the core OS level when starting WiFi; likely contributing or the primary cause of WiFi connectivity issues on this device; as reported in this and other forums.
I have screenies of this condition and would love to pass this to T-Mobile and Samsung engineering, but, unlikely I can get at them to do so; hopefully they are already aware of this and working on a fix.
The other interesting thing I noticed is that when doing a hard reset: during the start of recovery mode I get an "error" then no command message under the little droid as it settles down to the menu.
Also at the end of the recovery mode process for wipe data/factory reset I get an "error" message in red as well.
Again, seems to me there's a serious flaw in their Core programming setting up proper permissions for the base WiFi stack to start without triggering a security violation.
It doesn't matter if you connect to an AP or not. Just starting WiFi the pop up will come up in 60 - 90 seconds.
This is consistently reproducible.
T-Mobile is sending me another phone; but, I believe it will behave the same way - hope not, we'll see.
cef1000

You really need to SEARCH before posting. There are many threads about Prevention Information and it has nothing to do with WiFi.

krelvinaz said:
You really need to SEARCH before posting. There are many threads about Prevention Information and it has nothing to do with WiFi.
Click to expand...
Click to collapse
That may be, but, in this case it is 100% reproducible under these conditions and happens if WiFi is turned on at all before any updates and before any additional apps are installed, other than the ones the Play store insists on bringing in to work properly once initially signing in, happens to me in this very limited and controlled startup of the device and only when starting WiFi and no other time in that controlled condition; before any updates or Play Store apps are installed.
It also happens after they are; so it seemed,to me at least, to have value because of the controlled diagnostic startup; since the condition is 100% reproducible using these steps and under these limited initial startup conditions, at least on the device I have in my hands at the moment.
A replacement should be here sometime today and will attempt to reproduce it on the replacement; T-Mobile tech support seems to think it will behave the same way as well; FWIW to anyone.
Thanks so much for the input and advice; duly noted.
Best regards,
cef1000

Knock yourself out....
You might try doing a simple Google Search for samsung "Prevention Information" and see just how many threads there are about this issue. It is not just the Note 3 but a number of other Samsung devices as well.

Actually it has everything to do with wifi. Knox is thinking wifi is trying to collect information from your device as if it is a type of virus. Samsung is fully aware of the issue & there is an update coming based around that specific issue.
Sent from my SM-N900T using XDA Premium 4 mobile app

sIpInWiT mYdRoId said:
Actually it has everything to do with wifi. Knox is thinking wifi is trying to collect information from your device as if it is a type of virus. Samsung is fully aware of the issue & there is an update coming based around that specific issue.
Sent from my SM-N900T using XDA Premium 4 mobile app
Click to expand...
Click to collapse
+1 Thank you slpn...
I'm glad to hear there's some fix in the works. Do you have a link handy for that? It's clear that the shipped Knox/SEAndroid configuration shipped on this device (and perhaps other Samsung models) really wasn't tuned very well before release.
OP, if you want to know more about this read some of the other threads here about Knox - the Everything Knox thread in this forum is pretty good IIRC, and the Samsung Knox whitepaper is an interesting read too (here). Basically, Samsung rolled their own solution for bring-your-own-device enterprise users, which is based in part on the SELinux extensions to Android (SEAndroid) along with some lower-level supervisory logic that's probably somewhere in the boot loader / modem / etc. [speculation] and some degree of hardware support such as the "knox warranty void" flag.
Unfortunately they developed this alongside/outside the reference implementation of SEAndroid, wrote their own APIs for interaction, etc. and don't seem to have done it terribly well. I'm tempted to ask that Samsung provide some way to actually control it, or provide a signed development FW that won't trip the hardware flag, as it really is an intrusion for non-enterprise customers. >.<

sIpInWiT mYdRoId said:
Actually it has everything to do with wifi. Knox is thinking wifi is trying to collect information from your device as if it is a type of virus. Samsung is fully aware of the issue & there is an update coming based around that specific issue.
Sent from my SM-N900T using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Actually I've gotten the notification without wifi although it usually happens when I do turn it on.
Totally agree though that a simple search would have saved a HELLS of a lot of trouble. Smh
Yes it's a bug but it's not really that big of an issue. I can almost guarantee it will be fixed soon with some kind of minor update.

Well I have two other issues besides the "prevention information" for some reason my note 3 keeps giving me a unstable wifi connection when the connection to the wifi is good for example on my note 2 is perfect mo issues no lags on the note 3 however I get that unstable wifi connection, and for my second issue I get a damn google+ app crash every time im on the phone or any app . This note 3 has become a nightmare with bugs . I was wondering if anyone else has the same issues besides the prevention information ???
Sent from my SM-N900T using xda premium

westkhalifa13 said:
Well I have two other issues besides the "prevention information" for some reason my note 3 keeps giving me a unstable wifi connection when the connection to the wifi is good for example on my note 2 is perfect mo issues no lags on the note 3 however I get that unstable wifi connection, and for my second issue I get a damn google+ app crash every time im on the phone or any app . This note 3 has become a nightmare with bugs . I was wondering if anyone else has the same issues besides the prevention information ???
Sent from my SM-N900T using xda premium
Click to expand...
Click to collapse
I think I had the unstable connection problem a long time ago. I may have made my phone "forget" my wifi network and obviously have connected to it since and have not have that problem. So it's possible simply "forgetting" the network, scanning, and then connecting to it again could fix it?
How often do you use Google+? Is it possible that if you hardly use it you could just sign out of the app and then it won't search for your location so much? I see the new G+ update says something about refreshing friends location more often or something, could be tied in to that?

I dont use google+ at all. It updated on its own and it started crashing since. I just turnt off all my auto updates and I uninstalled the last google+ update lets see if that does the trick .
Sent from my SM-N900T using xda premium

westkhalifa13 said:
I dont use google+ at all. It updated on its own and it started crashing since. I just turnt off all my auto updates and I uninstalled the last google+ update lets see if that does the trick .
Sent from my SM-N900T using xda premium
Click to expand...
Click to collapse
You can take it how you'd like cause i know how some are when they hear about an update, not saying your one of these people who flame on the other person who try to provide helpful info about an update, but that is also being included in the update i spoke of a few posts above.
What is going on is your phone is scanning your signal & even if you have a full WiFi signal, instead of just leaving you on WiFi like you'd like, it boots you off of WiFi saying internet is unstable if it considers the data connection as being a stronger signal. its a real ignorant move and overlook they made when adding this function. if on WiFi they should let you choose if you want to change connections,or better yet not even bother you to choose between the 2 cause it will interfere with what your doing at that time while you have to choose which connection you want to use. But this is involved with the update we are getting. Verizon already got an update that had to do with WiFi issues with this being one of the issues it fixed.
If you haven't been told yet though, go in to WiFi advanced settings in your WiFi connections menu, and turn off auto connect & always scanning, then dial *#0011#, click your bottom left button on the white part of the phone you'd usually use to bring up the settings menu option, choose WiFi, turn off WiFi power save mode, WiFi power save mode being tuned off cause your battery to drain about 25% faster but this is proven to work. But after a day or 2 always leave WiFi auto connect off & always scanning off, but you can then dial *#0011# & turn WiFi power save mode back on & it's almost as if those functions done together trains your phone to not boot you off WiFi anymore. This seriously works and definitely helps many i have offered the information to. Me and about 3 others figured out how to do this in a thread about 2wks after the phone was released because the wifi booting us off was killing us. People had told us to just turn off auto connect but that would just stop the pop up, but you'd still be getting booted off from WiFi but just wouldn't be told by the pop up yet you'd know because the page you'd be loading on the browser would just stop loading, or say something your using like Facebook would lose signal & tell you an error occurred. Hope this large posts helps you if you read it or anyone else who stumbles upon it.

westkhalifa13 said:
I dont use google+ at all. It updated on its own and it started crashing since. I just turnt off all my auto updates and I uninstalled the last google+ update lets see if that does the trick .
Sent from my SM-N900T using xda premium
Click to expand...
Click to collapse
You have to actually go into the Google+ app to see if you are signed in, unfortunately it will automatically sign you in if you are not already. So even if you accidentally open G+ or some other program or app causes it to open, you still need to actually sign out of it. Hopefully uninstalling the updates does the trick.

Auto connect in wifi advance settings is the network switch box right ???
Sent from my SM-N900T using xda premium

westkhalifa13 said:
Auto connect in wifi advance settings is the network switch box right ???
Sent from my SM-N900T using xda premium
Click to expand...
Click to collapse
Yes thats it.
Sent from my SM-N900T using XDA Premium 4 mobile app

i had a wifi problem with my Note 2 before and now it is better with my Note 3.

[Q] Wifi problems

I bought a used Xperia M for my mother.
Everything works great (i update to latest stock sofware) except wifi.
it says I'm connected but wifi keeps droping. When using chrome, it just hangs there and no page loads. And I tried using Fongo (Voip app), I can place a call, but after 10-20 seconds, I can't hear anything, and the other side either.
The wifi icon is always there, but clearly the phone drops the signal.
other phones/computer in the house have no problem on my wifi network.
Any ideas?

fullpampers said:
I bought a used Xperia M for my mother.
Everything works great (i update to latest stock sofware) except wifi.
it says I'm connected but wifi keeps droping. When using chrome, it just hangs there and no page loads. And I tried using Fongo (Voip app), I can place a call, but after 10-20 seconds, I can't hear anything, and the other side either.
The wifi icon is always there, but clearly the phone drops the signal.
other phones/computer in the house have no problem on my wifi network.
Any ideas?
Click to expand...
Click to collapse
May be, you've been fooled. Oops, sorry!
Try reflashing stock firmware, full wipe will be great!

fullpampers said:
I bought a used Xperia M for my mother.
Everything works great (i update to latest stock sofware) except wifi.
it says I'm connected but wifi keeps droping. When using chrome, it just hangs there and no page loads. And I tried using Fongo (Voip app), I can place a call, but after 10-20 seconds, I can't hear anything, and the other side either.
The wifi icon is always there, but clearly the phone drops the signal.
other phones/computer in the house have no problem on my wifi network.
Any ideas?
Click to expand...
Click to collapse
yaa try to reflashing, using sony pc companion for safety use

StraightEdgeKid said:
May be, you've been fooled. Oops, sorry!
Try reflashing stock firmware, full wipe will be great!
Click to expand...
Click to collapse
It's possible, but I doubt it. The lady that sold it to me didn't strike me as the scamming type. If something is wrong with the phone, she probably didn't know it. And either way, fooled or not, I'm stuck with the phone now...
My mother doesn't use the wifi on the phone, but if she wants to switch to using voip, it would be nice to have the option.
And the first thing I did when I got home was a full wipe with a flash/upgrade of stock firmware using Sony program.
I'll try doing another one just in case.
I read on other forums that people were having these problems, but no one had a fix for it..
Thanks!

fullpampers said:
It's possible, but I doubt it. The lady that sold it to me didn't strike me as the scamming type. If something is wrong with the phone, she probably didn't know it. And either way, fooled or not, I'm stuck with the phone now...
My mother doesn't use the wifi on the phone, but if she wants to switch to using voip, it would be nice to have the option.
And the first thing I did when I got home was a full wipe with a flash/upgrade of stock firmware using Sony program.
I'll try doing another one just in case.
I read on other forums that people were having these problems, but no one had a fix for it..
Thanks!
Click to expand...
Click to collapse
but are you sure, you have try to repair with pc companion and it's still broken?

Yeah i just did it. I did a repair with complete wipe. It does connect to my wifi but it works only for a couple of minutes. Like i said my mother just uses the phone for calling and texting so it's not that big a deal. But I would have wanted to give her a 100% working phone...

I check around and on the sony forums some people are having the same problem, but no clear fixes.

fullpampers said:
Yeah i just did it. I did a repair with complete wipe. It does connect to my wifi but it works only for a couple of minutes. Like i said my mother just uses the phone for calling and texting so it's not that big a deal. But I would have wanted to give her a 100% working phone...
Click to expand...
Click to collapse
if that still happen, maybe that's is hardware issue, take to service center for safety

fullpampers said:
I check around and on the sony forums some people are having the same problem, but no clear fixes.
Click to expand...
Click to collapse
Brother, have you checked what WiFi band frequency is selected, I had same prob when I had 5ghz selected and my office Wi-Fi was on 2.5ghz, I selected auto then.

StraightEdgeKid said:
Brother, have you checked what WiFi band frequency is selected, I had same prob when I had 5ghz selected and my office Wi-Fi was on 2.5ghz, I selected auto then.
Click to expand...
Click to collapse
The wifi band is set to auto, i tried both separately too. Keep wifi awake is set to always. And i tried a combination of all the other settings. The phone is set up just like my phone and my g-f's phone. The reception is excellent on the xperia, it just sort of freezes...
Anyway my mother came to pick up the phone this morning and she didn't mind the wifi not working. If she ever chooses to switch to voip, I'll either try to fix it or change the phone.
I'll try to look around in the mean time if I come across a fix. If I do i'll try it when she comes to visit.
Thanks!