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So my phone just started showing this behavior like a day or two ago. It's doing it right now. Both my Wifi and 4G icons appear in the notification bar. The 4G icon isn't showing activity (the download and upload arrows are dimmed), BUT if I go to my "Phone Info" app, and go to Phone Information it shows:
GSM service: In service
GPRS service: Connected
Network Type: HSDPA
Before whenever I was on Wifi only the Wifi icon would show up, and Phone Info would show GPRS Service as : Disconnected, i.e. normal behavior. Now it appears there is a conflict somewhere and the 4G network is showing as connected even when wifi is on.
Now, I did make some changes recently:
1) Temp-rooted and pm disabled a bunch of bloatware - this was like 4 or 5 days ago and I didn't have the problem at all so I'm not sure if it's related.
2) I unchecked Wireless Settings > Mobile Networks > "Enable always on mobile data" - Thought it might save battery when in sleep mode.
I think the problem started after #2. I've since checked that option back on, restarted, airplane mode, battery pull etc., but it's still exhibiting the same behavior. I've never seen this happen on any of my past Android devices (a lot). If I go to the Quick Settings it shoes Mobile Network is OFF but it IS checked. It's really confusing. When you turn Wifi on, Mobile network should disconnect, but according to phone Info, mine is on and I've been getting "network issue, try again" in the Market, and "Network Communication issues" in the Speedtest app so clearly something is being affected.
This has been my ONLY problem with my Sensation thus far, and the fact that it JUST started doing this makes me wonder what I could have done to affect it.
Thoughts?
EDIT: Every once in awhile the 4G icon WILL disappear leaving only Wifi on, and Phone info shows GPRS service: Disconnected, but eventually the 4G/2G icon comes back and Phone info shows GPRS service: Connected, so it keeps trying/turning itself on even though my Wifi is connected. WTF!
If you're on a t mo device it's because of the my device app. Open and close it or end the process in system panel and it should fix the problem.
I believe this is somewhat normal...
I have voice only plan and disabled data through the *#*#INFO#*#* menus. The only way I can get data is through Wifi, which I always have enabled, regardless when I go to About Phone -> Network, I see mobile network type HSDPA.
It seems like voice is going through the 3G/4G but not any data. Not sure why you do get the 4G popping up, I sure don't.
Sdobron said:
If you're on a t mo device it's because of the my device app. Open and close it or end the process in system panel and it should fix the problem.
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Click to collapse
Thanks! I tracked down the second package name for "My Account" (one is for My Account, one is for My device), disabled and rebooted. So far so good; Wifi is connected, no 4G icon, and Phone info shows GPRS service: Disconnected as it should. I had already disabled one package but not the other. I can live w/o the My account feature for a bit and I'll keep an eye out to see if the problem returns.
bigmase521 said:
Thanks! I tracked down the second package name for "My Account" (one is for My Account, one is for My device), disabled and rebooted. So far so good; Wifi is connected, no 4G icon, and Phone info shows GPRS service: Disconnected as it should. I had already disabled one package but not the other. I can live w/o the My account feature for a bit and I'll keep an eye out to see if the problem returns.
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Click to collapse
You phone will always connect to data whn using Tmobile apps such as my account app. Its because they need network data, not web data, to get their info like your usage, and billing. If you manually shut of data and turn wifi on and try to open the my account app, it will give you error.
Just because you turn Wifi on, it doesnt make the data shut off. It just connects to WIFI because its a stronger signal. It will still access the 4G data for netork required information. You can manually shut off mobile data and then turn on wifi if you want.
^This is true, I'm manually switching 4G off when connected to WiFi.
dubie76 said:
You phone will always connect to data whn using Tmobile apps such as my account app. Its because they need network data, not web data, to get their info like your usage, and billing. If you manually shut of data and turn wifi on and try to open the my account app, it will give you error.
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Click to collapse
I realize this, however I was never trying to use the T-mobile apps.
dubie76 said:
Just because you turn Wifi on, it doesnt make the data shut off. It just connects to WIFI because its a stronger signal. It will still access the 4G data for netork required information. You can manually shut off mobile data and then turn on wifi if you want.
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Click to collapse
Of course it does. What would be the point in having BOTH Wifi and 4g/3g/EDGE data on at the same time, all the time? That would be a HUGE drain on your battery if it were constantly using both radios and connected to/searching for both networks. When you turn Wifi on, the mobile data radio gets turned off. When you de-activate Wifi, mobile data turns back on. This is why you get much better battery life on Wifi because the 4g/3g radio gets turned off. Plus, both can't be connected at the same time or else there would be routing problems i.e., it would get confused as to which connection to use.
This is exactly what happened to my phone in that that both WERE on at the same time and it was causing no traffic to get in/out and I couldn't figure out why. Disabling the two t-mobile My Account packages solved it so it seems like
one was trying to connect in the background and couldn't but then froze the radio state. I'm not gonna re-enable the app to confirm but IIRC when you're on Wifi and fire up the My Account app, it either prompts you to turn off wifi, or it just disables wifi temporarily and fires up the mobile radio in the background, and re-enables when you're done.
Sdobron said:
If you're on a t mo device it's because of the my device app. Open and close it or end the process in system panel and it should fix the problem.
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Click to collapse
Yep. If you keep the T-Mobile my account app running it will do that cause It needs the 4G/Data connection.
xamadeix said:
Yep. If you keep the T-Mobile my account app running it will do that cause It needs the 4G/Data connection.
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Click to collapse
Right, but what I'm saying is that I wasn't running the app. It does run as a service though so I'm wondering if it was trying to connect on it's own in the background, though I'm not sure why. I haven't seen this behavior on any other devices including my Sensation before I disabled one of the My Account apps, but I'm almost positive at this point it was the culprit. Could be because I had only disabled one of them and not both. After I disabled the second, the problem went away.
Do you have WiFi sleep disabled?
If not, phone may revert to regular data until you start communicating and wake up your WiFi.
Just a thought.
Sent from my HTC Sensation 4G using Tapatalk
PaulGiz said:
Do you have WiFi sleep disabled?
If not, phone may revert to regular data until you start communicating and wake up your WiFi.
Just a thought.
Sent from my HTC Sensation 4G using Tapatalk
Click to expand...
Click to collapse
Nope, sleep policy is set to "Never" and wifi sticks fine. Still happened even with screen on so wifi was def. awake. I fixed it by disabling the T-Mo My Account apps so I'm cool but maybe it can help someone else if they have the same problem. It's really weird, never seen it happen before. I wish I took a video of it before I disabled the apps. Thanks guys.
bigmase521 said:
Right, but what I'm saying is that I wasn't running the app. It does run as a service though so I'm wondering if it was trying to connect on it's own in the background, though I'm not sure why. I haven't seen this behavior on any other devices including my Sensation before I disabled one of the My Account apps, but I'm almost positive at this point it was the culprit. Could be because I had only disabled one of them and not both. After I disabled the second, the problem went away.
Click to expand...
Click to collapse
It's poor coding in the app. Nothing you're doing wrong.
Hi,
Just wonder if anybody is experiencing the same wifi fallback issue on the SGH-i727?
Basically, the phone doesn't automatically fall back to the previously added wifi network from LTE/4G when the screen is off. To get around that, I'll need to hit the power button once every time I enter the wifi range. When the screen is turned on by hitting the power button, I will see the 4G/LTE being replaced by the wifi icon very quickly. After that, it will then stay connected to the wifi network regardless whether the screen is on or off.
I was able to confirm this issue by monitoring the app traffic before and after I turned on the screen.
Without turning on the screen in the wifi range, the phone will stay on the 4g/LTE network forever even though the previously added wifi network is available.
I have already tried out different routers and it's still the same. SSID broadcast is on. I am thinking if there's a bug with the phone. Note that on my phone, my "Wi-Fi sleep policy" under the advanced menu of the "Wi-Fi settings" is always set to "never". Also, it's a stock ROM, nothing is modified at all.
This issue has never happened on other phones. What you think? Am I missing anything here?
After playing with it more, I noticed that the phone will never do the wifi handshake when the screen is off.
I tried turning off and on the wifi in the Wi-Fi settings. If I turn off the screen quickly before the phone gets connected to the wifi network again, it *will* remain unconnected until the screen is turned on again. =(
Did you go into the advanced wifi settings and change the wifi sleep policy?
Sent from my SAMSUNG-SGH-I727 using XDA App
No, I didn't. I've never touched that setting. The "Wi-Fi sleep policy" is always set to "never".
My phone can still be connected to wifi when the screen is off, so it doesn't seem related to the "Wi-Fi sleep policy". The problem is only that it won't do any wifi connection handshake during screen-off.
Am I the only one having this issue? I guess that's more of a software issue rather than a hardware issue?
Have you tried the AT&T wifi app? It automatically turns off and on wifi as needed
No, that doesn't help.
Yes, I do realize I'm bringing back a thread from the dead, but...
I just got a Samsung Stratosphere (SCH-i405 -- a CDMA-1X/EVDO/LTE Galaxy S phone) and it does EXACTLY the same thing. It's ironic, on the Stratosphere they added a bit of fun that CONSTANTLY lets you know there's networks (which I had to disable), but it doesn't connect to the wifi networks I do have in there until I turn on the screen I guess that's just how it is; at least it doesn't kill the wifi once it IS connected.
If anyone knows a programmatic way to bypass this, I'd be interested, and I could write up a wifi app to implement the solution. I'm guesisng it's a behavior of the drivers though and would take some custom ROM or something to fix.
You could always try to use tasker for automatically connecting to the wifi using radio antenna or maybe can't remember if possible by identifying certain wifi spot.
My m8 at some times usually during the night will disconnect my wifi and use my mobile data, which it should not do because in the power settings I have the sleep mode set to off and I have all power saver crap removed with viperone 1.8 I"am just on a limited data plan that I need all of my data for and wasting my mobile data sucks especially when I have wifi to use and pay for home internet that it should be using. Does anyone know why it could be doing this and a fix ? My computer never disconnects from the wifi and I use it many of the same times that the phone disconnects from my wifi, so that leads me to believe its somewhere in the phone and not my wifi. Also I have had a couple other m8's do the exact same thing. I would like to find a fix other than turning my mobile data off. And I do use a lot of data as I have a large number of email addresses added to my phone and have my k9 set to check for new emails every 10 minutes because I rely on it for personal and business use. Anyone have any idea ?
Here is my settings showing sleep mode off and power saving mode off also.
In "wifi advanced settings" do you have the "auto switch to mobile data when wifi is weak" checked off?
qskile said:
In "wifi advanced settings" do you have the "auto switch to mobile data when wifi is weak" checked off?
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Click to collapse
No its unchecked but under wifi optimization I have minimize battery usage when wifi is on ? Not sure if that could have an effect but shouldnt because mobile data would use more battery than wifi and that would have the opposite effect to turn wifi off for mobile data which would use more battery power.
Roefastford said:
No its unchecked but under wifi optimization I have minimize battery usage when wifi is on ? Not sure if that could have an effect but shouldnt because mobile data would use more battery than wifi and that would have the opposite effect to turn wifi off for mobile data which would use more battery power.
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Click to collapse
I thought I remembered under venom tweaks somewhere that is has the regular PowerSave mode which has the option to disable data when the screen is off for an exteneded period of time. MAybe its turned on???? Not running the ROM right now otherwise I could look myself. Check it out:good:
mademan420 said:
I thought I remembered under venom tweaks somewhere that is has the regular PowerSave mode which has the option to disable data when the screen is off for an exteneded period of time. MAybe its turned on???? Not running the ROM right now otherwise I could look myself. Check it out:good:
Click to expand...
Click to collapse
I always set it up to remove the power save mode garbage in the venom aroma installer so 100% that is not the issue.
Roefastford said:
My m8 at some times usually during the night will disconnect my wifi and use my mobile data, which it should not do because in the power settings I have the sleep mode set to off and I have all power saver crap removed with viperone 1.8 I"am just on a limited data plan that I need all of my data for and wasting my mobile data sucks especially when I have wifi to use and pay for home internet that it should be using. Does anyone know why it could be doing this and a fix ? My computer never disconnects from the wifi and I use it many of the same times that the phone disconnects from my wifi, so that leads me to believe its somewhere in the phone and not my wifi. Also I have had a couple other m8's do the exact same thing. I would like to find a fix other than turning my mobile data off. And I do use a lot of data as I have a large number of email addresses added to my phone and have my k9 set to check for new emails every 10 minutes because I rely on it for personal and business use. Anyone have any idea ?
Click to expand...
Click to collapse
Try Wi-Fi > Advanced > Uncheck "Wi-Fi optimization"
Had the same problem and this fixed it. Haven't noticed any difference in battery life checked vs. unchecked.
bigblueshock said:
Try Wi-Fi > Advanced > Uncheck "Wi-Fi optimization"
Had the same problem and this fixed it. Haven't noticed any difference in battery life checked vs. unchecked.
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Click to collapse
That was the only thing I had not tried so early last night I tried unchecking it and so far so good I think you may be right on that, thanks.
bigblueshock said:
Try Wi-Fi > Advanced > Uncheck "Wi-Fi optimization"
Had the same problem and this fixed it. Haven't noticed any difference in battery life checked vs. unchecked.
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Click to collapse
Mine is still doing it, so I changed the wifi frequency band from automatic to 5 ghz and rebooted and it connected but some apps could not access data so I changed it to 2.4 ghz only and rebooted it worked ok but its doing it again this time I had to toggle airplane mode to get the wifi back on. I have to toggle airplane mode quite often actually and usually it shows change of sim detected. And some times my mobile data will disconnect and its a ***** to get working again. Maybe I will try going to a verizon corporate store and getting a new nano sim card for it. A verizon dealer could not get a new nano sim to activate before and they ended up getting my old nano sim reactivated which I thought once a sim has been deactivated that they cant reactivate it but apparently they can. I really dont know what else to try other than a new sim card. Anyone ?
Any chance you could temporarily try a different wireless router? Some of these new phones are finicky with some wireless routers... Could be a miscommunication between the phone and router somehow.
Don't really have an explanation, one of my old HTC devices had issues connecting to a specific wireless router, where apple products did not have the problem, and vice versa with a different router.
bigblueshock said:
Any chance you could temporarily try a different wireless router? Some of these new phones are finicky with some wireless routers... Could be a miscommunication between the phone and router somehow.
Don't really have an explanation, one of my old HTC devices had issues connecting to a specific wireless router, where apple products did not have the problem, and vice versa with a different router.
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Click to collapse
Having been the case with at least 3 m8's I honestly do not think its the router because It happened with my old moden and router and also with my motorola surfboard SBG6580 modem / wireless router combination that I switched to a couple months ago. And it will also do the same on my girlfriends modem and wireless router. I think there is something in the m8 that is the problem and one other of the m8's was an at&t version. I"am not 100% sure but it may have all been while using viperone, as there really is not much choices for daily driver custom roms especially since elegancia closed its doors. Dont get me wrong tranquil one m8 is not bad and cleanrom is ok but they are no way as easy to customize as viperone is. Years ago I use to like cleanrom for its DE which was barebones the way I like it, good clean and fast. I just dont trust any of the other roms to be bug free enough to be a daily driver. I have just had too many issues in the past with cm dont get me started on them lol, omg was nothing but fix after fix that you had to do nothing like being a Guinea pig lol.
Wi-Fi not connect after phone is woken from sleep mode
Both my wife and I was having the issue with Wi-Fi. I tried everything ,turning off optimization, setting for 2.4ghz,and every other thing listed. Nothing helped until I flashed the firmware from the digitalhigh thread, took 30 sec and fixed Wi-Fi for good on my wife's m8 and mine. I lost nothing in the process except that very annoying Wi-Fi issue. I was then able to set any options like, Wi-Fi optimization and Auto band detect, everything working great!
Here is link to that firmware...
https://www.androidfilehost.com/?fid=95832962473400175
Just downloaded and save to SD card root and rename to "0P6BIMG.zip" and boot to hoot to install.
If I'm home, chillan out, connected to my home WiFi, sometimes my wifi will just randomly turn itself off.. And then when I'm out (let's say I'm driving around) my WiFi will just randomly turn itself on. I don't get why the hell it does bc it never used to! I have a Sprint S6 and I have connections optimizer deleted (using Titanium Backup) and I have "always allow scanning" OFF and "keep WiFi on during sleep" ON. What gives....?!
Same issue here. It seems to happen only with 5 ghz, not with 2.5.
robto said:
Same issue here. It seems to happen only with 5 ghz, not with 2.5.
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Click to collapse
How can you tell if the WiFi you're on is 2.5/5 ghz??
Router configuration. I use to enable only 5 ghz (faster), but had issues so changed to only 2.5 and seems to work fine now (but it is much slower coping files to pc)
I think the issues you two are describing are different. I think the OP is saying his wifi is being activated (turning on) rather than disconnecting and reconnecting to the network (which is an issue I also have). My wifi will never turn ON or OFF (as if the quick setting has been touched) unless I turn it on or off.
If I'm wrong, then please disregard.
JoeFCaputo113 said:
If I'm home, chillan out, connected to my home WiFi, sometimes my wifi will just randomly turn itself off.. And then when I'm out (let's say I'm driving around) my WiFi will just randomly turn itself on. I don't get why the hell it does bc it never used to! I have a Sprint S6 and I have connections optimizer deleted (using Titanium Backup) and I have "always allow scanning" OFF and "keep WiFi on during sleep" ON. What gives....?!
Click to expand...
Click to collapse
My wifi setting does not turn off/on randomly, however, I have noticed my S6 (920i) seems to randomly forget networks I have logged in to...home/work mostly. There's no option to forget the network, if I touch the network name again I'm immediately prompted for the password.
miller7796 said:
My wifi setting does not turn off/on randomly, however, I have noticed my S6 (920i) seems to randomly forget networks I have logged in to...home/work mostly. There's no option to forget the network, if I touch the network name again I'm immediately prompted for the password.
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Click to collapse
Have you tried long pressing?
Japultra said:
Have you tried long pressing?
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Click to collapse
Yes, I get "Connect to Network" when long pressing.
Japultra said:
I think the issues you two are describing are different. I think the OP is saying his wifi is being activated (turning on) rather than disconnecting and reconnecting to the network (which is an issue I also have). My wifi will never turn ON or OFF (as if the quick setting has been touched) unless I turn it on or off.
If I'm wrong, then please disregard.
Click to expand...
Click to collapse
You are EXACTLY CORRECT... And it is very annoying lol.
Yes, I get the same thing. I try to use Trigger scripts to set my phone the way I like it at work, home, night, etc. Sometimes, I'll turn wifi off, then next thing I know, it's back on. Or vice-versa. There's no setting for it anywhere that I can find.
I have a stock galaxy s7, no root, no custom rom. When I wake up the phone from sleep, I often find that it lost wifi connection and I have to reconnect it manually.
I have tested 3 wifi networks and this happens only with 2 of them, so this make me think that it's a modem issue. BUT my previous phones (lg g3s, samsung galaxy s4 mini, meizu mx5) worked fine with the same connections, so this make me think that it's a phone's issue.
I have ''smart network switch'' disabled and also ''bluetooth scanning'' disabled (I read on AndroidCentral that bluetooth scanning could cause the problem, but it's not my case). The problem persists even with the latest firmware update.
Any suggestion? What can I do?
All the wifi networks I tested are 2.4 Ghz, the signal is strong and the wifi channel is relatively free.
I've experienced the oppsite problem.
My Wi-Fi is always on. Either I choose the "While charging" or "Never" option in "Keep Wi-Fi on during sleep" setting in Wi-Fi More menu.
Here I find an article about How to disable background Wi-Fi and Bluetooth scanning in Marshmallow.
But in S7's firmware there isn't Scanning option in overflow menu in Location setting like it showed by pictures.
I'm very confused.
Settings -> WLAN/WIFI -> More -> WiFi Standby
Hi-TechUp said:
Settings -> WLAN/WIFI -> More -> WiFi Standby
Click to expand...
Click to collapse
And does the lower 2 options work for you?
Me not.
air001 said:
I've experienced the oppsite problem.
My Wi-Fi is always on. Either I choose the "While charging" or "Never" option in "Keep Wi-Fi on during sleep" setting in Wi-Fi More menu.
Here I find an article about How to disable background Wi-Fi and Bluetooth scanning in Marshmallow.
But in S7's firmware there isn't Scanning option in overflow menu in Location setting like it showed by pictures.
I'm very confused.
Click to expand...
Click to collapse
The options that you are looking for are in a subsection inside the location settings. I don't know how the subsection is called in English because I'm italian and I use italian language, but it think it's ''location improvement', or something like that. Also, I have the exynos version of the S7, if you have the snapdragon one maybe this subsection could be absent or in another position.
But to be honest I don't think that you can solve your problem this way... Have you tried to reset to factory settings? Or have you checked if there is an app that forces the wifi to stay awake?
Btw, I did not solved my problem yet. I contacted Samsung assistance yesterday, and they told me that I have to send them the phone for reparation, but I'm sure that it could be solved modifying some parameters on my router... I don't want to leave them my phone for 2-4 weeks, beacuse I'm sure that they would send me it back with the same problem. If I find out a solution I will post it.
air001 said:
And does the lower 2 options work for you?
Me not.
Click to expand...
Click to collapse
Yes, both works fine. I have the Exynos SM-G930F
I solved the problem. I disabled the WOW FI service on my router and the phone never disconnected again. WOW FI is a new service of my internet provider that allows to share your wifi connection between all the customers of the provider, splitting the wifi connection in 2 separate connections, one private and one public. For some reason the S7 didn't like the second connection.
Samsung S7 WiFi forced to sleep
Hi
I've been having this extremely annoying condition too, since the last software update.
I came to the conclusion that it was some kind of aggressive power management setting that was putting all kinds of apps to sleep.
Today.... I think I might have found a solution... I say might, as it's only been a few hours..
So I've done is this..
Go to settings.
Search for "Battery"
Click on the three menu dots in the top right hand corner.
Click on "Advanced Settings"
Turn off "App Power Monitor"
So far, so good.
My WiFi stays connected and the 2 VoIP apps and Text-to-voice app are alive and well.
Curiously, my battery drain doesn't seem affected.
I'd be interested to know if this solution works for other people.
Good luck.
Bcl2 said:
I have a stock galaxy s7, no root, no custom rom. When I wake up the phone from sleep, I often find that it lost wifi connection and I have to reconnect it manually.
I have tested 3 wifi networks and this happens only with 2 of them, so this make me think that it's a modem issue. BUT my previous phones (lg g3s, samsung galaxy s4 mini, meizu mx5) worked fine with the same connections, so this make me think that it's a phone's issue.
I have ''smart network switch'' disabled and also ''bluetooth scanning'' disabled (I read on AndroidCentral that bluetooth scanning could cause the problem, but it's not my case). The problem persists even with the latest firmware update.
Any suggestion? What can I do?
All the wifi networks I tested are 2.4 Ghz, the signal is strong and the wifi channel is relatively free.
Click to expand...
Click to collapse