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[Q] Auto off WiFi never comes back on

Anybody else having trouble with the WiFi not turning back on after waking from sleep? I'm using the "Only when plugged in" option for "Keep Wi-Fi on during sleep" to conserve power.
What I'm seeing is when I am connected to a WiFi network and then lock the phone long enough for the WiFi to turn off, the WiFi will say it's on in the settings menu but won't show any available networks even if I hit "Scan". The only way to reestablish the connection is to toggle the WiFi on and off.
I've disabled Smart Actions because I thought that was interfering but it didn't help. I've also booted into Safe mode with the same problem.
My router is a Linksys WRT54GS. The settings are: SSID broadcasting, WPA2 Personal (AES), G-only.
I've attached before lock and after wake screenshots to show what I'm seeing.
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I kind of see the same thing. Wi-Fi works fine until I leave the range of the router (e.g.leave the house to go to the store). Upon my return I see the same thing your screen shot shows. Turning off wi-fi and turning it back on solves the problem No other phone I've ever owned has ever done this.
I've tried auto connect, leave it on and off during sleep, reset the router and nothing has had any effect.

So it's not just me. I wonder if this is present on all phones or if we just got a bad batch.
EDIT: Well... for some odd reason the WiFi came back on from a sleep just now. I don't remember changing anything other than installing the 4.2 camera and changing the build.prop to a Galaxy Nexus. I shall investigate further.
EDIT 2: Could this perhaps be an ICS issue? (I came from a DROID X with GB) I ask because a GSIII in our house seems to be doing the same thing.

Not sure. My GS III will connect automatically without fail. I just got home with the Razr Maxx HD and had to go through the off and on routine to make it connect. I had the GS III last evening and it reconnected as usual once I got home.
There's an extensive thread on the Moto support forum where everyone is complaining about the wifi signal dropping randomly when connected. You are the only other person I've seen with our issue.

I haven't played with the GSIII extensively so it might have been a fluke that it did that.
I did see that thread but the Motorola support site has been loading very slowly on my end so I haven't been able to look through the whole thing due to my impatience with it.

Something's definitely wrong with the site. There's a thread for that as well LOL.

Keeps dropping network

Woke up this morning, no service, keeps saying current network (T-Mobile) is unavailable, the only way it'll work is if I pull sim card out, power it down, reinsert it and start it back up, it'll work fine for about half an hour and drops network again.
I'm running latest mahdi ROM, nothing else modified.
Any help appreciated.
BTW sim card is relatively new( about 5 months old)

Try a different ROM and if it still does it RMA the device I was having problems with service to where when I was using data it would decide to switch to h/3g I'm on T-Mobile as well

spinninbsod said:
Try a different ROM and if it still does it RMA the device I was having problems with service to where when I was using data it would decide to switch to h/3g I'm on T-Mobile as well
Click to expand...
Click to collapse
Thanks for the suggestion, i don't think its the ROM, but to put my mind and ease and eliminate that possibility I'll flash another ROM tonight.
Btw how does the RMA work? I've never had to go through this before
Thanks

If you purchased it through T-Mobile just call T-Mobile and tell them you're having problems with it and just do troubleshooting stuff and if what they say doesent work unroot it and send it back and if you purchased it through google same exact thing

Although I bought it brand new, it wasn't from Google or T-Mobile itself. If I can't rectify this with software I'll have to contact lg and see what they say

No bueno, flashed other ROM and currently on stock ROM still having same problem, service drops off rendering phone useless. Emergency calls only is all i get.
Any advice?

Try going to the service menu which you can get into by dialing *#*#4636#*#* in dialer. Go into phone information and try changing this setting:
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Since you're on t mobile I'd recommend trying anything but CDMA. WCDMA is fine though. Maybe one of the options will help solve your connectivity issues.
Personally I'm on WCDMA only when connected to WiFi. This gives me 3G. Otherwise I am on LTE only. GSM should give you 2g.
Sent from my Nexus 5 using XDA Free mobile app

e4604 said:
Woke up this morning, no service, keeps saying current network (T-Mobile) is unavailable, the only way it'll work is if I pull sim card out, power it down, reinsert it and start it back up, it'll work fine for about half an hour and drops network again.
I'm running latest mahdi ROM, nothing else modified.
Any help appreciated.
BTW sim card is relatively new( about 5 months old)
Click to expand...
Click to collapse
Have you tried different modem?

Figured it out, in short I got scammed. Called tmobile today, they blacklisted the phone for non payment, I guess the guy that sold it to me hadn't paid it off/paid. I guess lesson learned, call service provider and make sure device is paid off.
It still works with att. At this point I'll sell it as such and or for parts.
Thanks everyone

Mobile data connection freezing problems - G930F

I bought my S7 less than a week ago and I notice something odd happening with my mobile data connection.
When I'm using 3G (Mobilcom-debitel_Vodafone/Germany), my connection is consistently laggy. Every action that I require connection for takes a couple of seconds to be executed, if executed at all. For instance, click to download an image/audio/video/etc in whatsapp, it takes 5+ sec to start the download; open the browser, takes 5+ sec to load the page; open Deezer, takes 5+ sec to start loading the data... and so on. I notice this problem since the first time I used 3G on the phone. Everything is up-to-date and I installed the phone from scratch, app by app, no backup/transfer from other phone. On my previous S6 I didn't have this problem.
Some information that might be useful:
- I use 3G/2G (auto-connect), no LTE/3G/2G
- I'm usually with BT/Wifi/3G enabled at the same time, not necessarily connected to a device or network
- The data icon keeps the up arrow on, but the down arrow off until I actually receive data and the request is processed
- If I try to turn off the mobile data connection/put in airplane mode, it takes the same amount of time for the connection icon to disappear (5+ seconds)
Is it a known issue? Anyone with the same problem?

Try to restore your phone. helped me with the same problem.
Sent from my SM-G930F using Tapatalk

orel18i said:
Try to restore your phone. helped me with the same problem.
Sent from my SM-G930F using Tapatalk
Click to expand...
Click to collapse
Just checking: you know that the phone is brand new, 2 days old, right? Just checking... Also, since the first time I went outside to use 3G I noticed the problem.

Did you have this Problem by using WiFi only?
2nd Option is run a Speedtest (Ookla) to Check the ping.

Hi-TechUp said:
Did you have this Problem by using WiFi only?
Click to expand...
Click to collapse
No, I haven't. Just my usual ****ty router problems, but other than that the wifi is fine.
Hi-TechUp said:
2nd Option is run a Speedtest (Ookla) to Check the ping.
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Click to collapse
I did it already and there are no problems there, as you can see below. 3G speed on my plan is limited to 21mbps.
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On a side note, I did a reset of the network settings and apparently it got better. I'm still testing it, can't say yet it's fixed, but I noted some improvement for sure.

hknoener said:
Just checking: you know that the phone is brand new, 2 days old, right? Just checking... Also, since the first time I went outside to use 3G I noticed the problem.
Click to expand...
Click to collapse
Yeah, I know it's happened to me too with a brand new Galaxy s7

orel18i said:
Yeah, I know it's happened to me too with a brand new Galaxy s7
Click to expand...
Click to collapse
As I posted, resetting network settings was apparently a solution, but this morning it was clear that something was still pretty odd.
I will consider starting from scratch. I'm so lazy, it takes a long while to config the whole phone again, but apparently it's worth a try.

Can't connect to network suddenly and emergency calls only

Today i went on business trip and while on plane i put airplane mode on. Upon landing i couldn't connect to network anymore, it gives me 2 errors depending if i manually select network or try automatically, those 2 are Unable to connect. Try later and Error while searching for network.
I reset network settings, restarted phone, reset it, tried different sim in my phone and it didnt work either, mine did in other phone. I dont known what to do besides wait to go home and give it to service since its under wattany... any ideas please?

N_L said:
Today i went on business trip and while on plane i put airplane mode on. Upon landing i couldn't connect to network anymore, it gives me 2 errors depending if i manually select network or try automatically, those 2 are Unable to connect. Try later and Error while searching for network.
I reset network settings, restarted phone, reset it, tried different sim in my phone and it didnt work either, mine did in other phone. I dont known what to do besides wait to go home and give it to service since its under wattany... any ideas please?
Click to expand...
Click to collapse
is your phone rooted or did you install a custom rom/kernel on it?

All stock
I get bars but cant get on network. Carrier back home said i seem connected and reset it but it's not card issue as i tested for that...

Maybe this can help
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I can also open and browse carrier sim app but cant receive resulting messages from stuff there or make a call...weird stuff

N_L said:
I can also open and browse carrier sim app but cant receive resulting messages from stuff there or make a call...weird stuff
Click to expand...
Click to collapse
You didn't say but have you tried a reboot?

At least20 times, wiped cache too

Came home and network works... I'm still taking it to service but don't know how they'll or I can test it. Other sim produced same error abroad so it's not that...
Edit:
Bit of an update:
I called my warranty place they said phone is from Italy which now made sense but that it should work. I ran imei check and it says blacklisted. I bought it new unsealed with warranty from official place so now I'm gonna need a new phone, right?

It is the bug of Samsung. I am having the same problem all the time on both S8+ and S7Edge. Iphone 6 is fine. Typical answer form Samsung is 'network or sim' related. O2 is saying problem with your phone. When I choose network manually everything is working. As a fix you can turn 4g off when roaming

Korean LM-V500N Android 10 Update Broke Mobile Data in UK

Am I the only one with this issue? I have just updated my unlocked LM-V500N Korean model to Android 10 and all of a sudden mobile data does not work with my BT Mobile or Three SIMs (United Kingodm).
I have tried everything: reset roaming settings, network settings, and just now I have done a complete factory reset, and it still refuses to connect to 3G/4G.
I had a look at APN settings, and it appears to be empty. It will not accept the settings sent by my carrier (BT Mobile) and trying to add new APN does nothing (does not show up in the list after adding).
Everything was working completely fine on Android 9.

mine works fine.

Pk King X11 said:
Am I the only one with this issue? I have just updated my unlocked LM-V500N Korean model to Android 10 and all of a sudden mobile data does not work with my BT Mobile or Three SIMs (United Kingodm).
I have tried everything: reset roaming settings, network settings, and just now I have done a complete factory reset, and it still refuses to connect to 3G/4G.
I had a look at APN settings, and it appears to be empty. It will not accept the settings sent by my carrier (BT Mobile) and trying to add new APN does nothing (does not show up in the list after adding).
Everything was working completely fine on Android 9.
Click to expand...
Click to collapse
Can you show where you tried to add a new apn? Also have you tried to dial ##3282# apn settings 3 dots reset to default

Yep, I tried resetting APN's and I also reset the whole phone to factory and still no dice
I set the APN settings as described by my ISP:
bt.com/help/mobile/getting-set-up/how-to-change-apn-settings-on-an-android-mobile-phone
As you can see it just refuses to accept the settings:
thumbs.gfycat.com/HauntingSimpleAuk-size_restricted.gif
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antintin said:
Also have you tried to dial ##3282# apn settings 3 dots reset to default
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Dialing that number operator responds: "I'm sorry, this system's busy. Please try again later."

Is there a way to downgrade to Android 9?

Did you sort it? I'm having the same issues ?

Passportpowell said:
Did you sort it? I'm having the same issues
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Click to collapse
Nope, I've tried 5 different UK SIMs (BT, EE, Three, O2, Vodaphone) none are working.
I've even contacted LG Korea support. 1 month later, no reply.
In the end, I've resorted to using my old phone as a MiFi, so having to carry 2 phones with me ?.
Glad to hear I'm not the only one, but it's so strange that there's almost no one else with this issue.

Got the same issue on LG wing....anyone made any progress ?

Langford63 said:
Got the same issue on LG wing....anyone made any progress ?
Click to expand...
Click to collapse
My model in LM-F100N