[Q] 4G mobile network still connected when Wifi is ON?! - HTC Sensation

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.
Click to expand...
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.
Click to expand...
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.
Click to expand...
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.
Click to expand...
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.
Click to expand...
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.
Click to expand...
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.

Related

Wifi connection connected but won't load pages

It said connected in the wifi setting and it shows bars but it just won't load any website in the browser .. anyone got a fix for this?
I have the same issue. Tried different combinations of restarting wifi, turning on/off cell data, on/off wifi calling, etc... all with no result. I've also tried on different networks (both public and private)-- it'd start working for a while and then all of a sudden stop and never work again.
Seems similar to the problem here: forums. t-mobile.c om/t5/T-Mobile-G2x/G2x-WiFi-DNS-issue-not-the-4G-switching-one/m-p/831439 (sorry there's a new user no link restriction)
Does anyone have any suggestions?
Thanks
coldest~~~ said:
It said connected in the wifi setting and it shows bars but it just won't load any website in the browser .. anyone got a fix for this?
Click to expand...
Click to collapse
is it specific to the browser or can you not move any data?
Idk, whenever I have had problems connecting to the tmo network, which is a separate issue.. it was always that wifi calling was still on even tho wifi was turned off. Every time I had probs w/ data on tmo network, it's been wifi calling.. Your case seems to be diff tho.
Is it specific to just your network or all other networks? Try shutting off wifi, reboot... then turn it on again? Idk.. just tossing out ideas.
Some found the root cause and I am posting his finding as I do have the same issue and can reproduce the error:
I think I have discovered a new WiFi-related bug in the G2x's software. I have witnessed this occurring on my phone, and have also reproduced it on a store demo unit. I believe it is unrelated to the switching-to-4G problem people are having with the My Account app, since it occurs even if I have set up the Google account on first boot after a factory reset.
The details of the problem are:
- Every so often, the phone randomly gets stuck in a state where it is not able to initiate any new connections that are made using a DNS name. Attempting to navigate to a web site, h**p://w*w.google.c*m for example, will result in a generic failure message.
- However, attempting to connect directly to an IP address instead of a DNS name works perfectly. For example, navigating to 74.125.225.16 will work fine and will load the Google home page.
- When the phone is in this state, using a DNS lookup tool such as "DNS Lookup" from the Marketplace *will* work, even when using the default DNS server address that the DHCP server is giving the phone.
- The problem has occurred for me when data is off and WiFi is on. I do not know if data being off is a requirement, since this is the way I usually run the phone, so this may be coincidental.
- Switching WiFi off and back on again will *sometimes* work to solve the problem, but sometimes will not. When this doesn't work, switching WiFi off, then switching data on, then back off again, and then finally switching WiFi back on again will occasionally correct the problem. However, I have seen situations where none of these things worked, and the only way to get DNS working again was to factory reset the phone.
- I haven't figured out the exact pattern yet, but this issue seems to occur when the phone has been inactive for a certain period of time. I have often discovered that the phone is in this state upon waking up in the morning after leaving the phone on the charger overnight.
- I have, however, found a method to reproduce the problem that seems to work fairly consistently:
1. Turn WiFi on, and data off.
2. Power cycle the phone.
3. When the phone starts up, start the browser and attempt to browse to w*w.google.c*m. It should fail.
4. Try to browse to 74.125.225.16. It should work.
Just wanted to get this issue in the forums to see how many others have been noticing the same thing.
I know that once the device has less than 10% battery it automatically turns the WiFi off to save battery power. Were the devices this was happening on have a low battery?
Fully charged. It even happens when pluged in with the charger.
My Wifi wouldn't even work if I froze it with Bloat Freezer. It has to run in the background for wifi to work. I found that Wifi can get really inconsistent with it disabled.
smartloom said:
Som
- I haven't figured out the exact pattern yet, but this issue seems to occur when the phone has been inactive for a certain period of time. I have often discovered that the phone is in this state upon waking up in the morning after leaving the phone on the charger .
Click to expand...
Click to collapse
Same problem here. After about 30 minutes of being idle, as soon as I pick up the phone it tries to connect 2g/4g. The log are saying theres no connection, so it appears that wifi its going to sleep and not waking up so android is trying to connect 2g/4g
Really starting to be a pain
I have frozen the bloat, and I think the problem is getting worse.
Toggle airplane mode is a quick workaround to get wifi to wake up
Sent from my LG-P999 using XDA App
Same thing happened to me, I did 2 factory resets, and it seems it has been fixed, don't really know what causes it.
Sent from my LG-P999 using XDA App
This may or may not be related, but...
It looks like I found a hacky fix for the dns/wifi/4g bug: install "Set DNS" from the market.
Now when I go into market, and display my downloaded apps, it jumps from wifi to 4g then back to wifi as it should, fast.
Whether or not it should even do go to 4g is debatable, all I can say is my 2 Galaxy Tabs had the same behavior.
If everyones connectivity issues are really due to the DNS settings getting wiped out, then this will work around the problem until I/we find the location of the actual bug.
Would you guys having this problem also post it here?
http://www.lgforum.com/forum/boards/general/lg/topics/g2x-wifi-problems
Thanks.
I figure the more people that post there, the more the chances are of LG fixing it quickly.
Work around:
enable airplane mode
reboot
enable wifi
wait a few seconds after the wifi connects, background crap stops
disable airplane mode.
The set dns app looks like a winner. Haven't tried it but that's what's
wrong.
The freezing and other suggestions are all useless crap.
Updates...
I did a factory reset and installed JuiceDefender (I don't know which one worked) but it seems to be all fine now... will update if things become problematic again
I've been having this problem as well. I've always been able to fix it by toggling WiFi off and back on again. I downloaded SetDNS and when it happened again last night I tried that and it worked great.
Glad to see it's a software problem and not a hardware problem.
same problem here. hopefully it won't happen in cyanogen mod
boylan said:
Work around:
enable airplane mode
reboot
enable wifi
wait a few seconds after the wifi connects, background crap stops
disable airplane mode.
The set dns app looks like a winner. Haven't tried it but that's what's
wrong.
The freezing and other suggestions are all useless crap.
Click to expand...
Click to collapse
This fixed the problem, at least until the next time I reboot my phone
How do you use SetDNS? This software bug in G2X reboots my router (DGL-4500) sometimes.
Question bout SetDNS app
Does the phone have to be rooted to use the setdns app? I try to use it but it says "Cannot get root. App will not function."

[Q] Wifi-calling stuck 'ON' when losing wifi connection

When wifi and wifi-calling are enabled, it disconnects from the tmo network.. Great.. no problemo. I don't want it connected to the tmo network at the same time.
But.. when I lose the wifi.. i.e. service is interrupted, I leave the area, etc., then wifi-calling is stuck "ON" and I cannot return to the tmo network because the app is trying to find the wi-fi connection. This causes all voice/data to be dead.
I have tried killing the wifi-calling app via ATK, it won't shut down. I tried to FC it, no go. I tried to reboot the phone.. no go. I tried to kill it via Watchdog.. no go.
So basically, if I forget to shut off the app b4 I leave my wifi area, I'm screwed and dead in the water. Or, if the wifi connection is lost (i.e. service interruption), I'm screwed.
The only way wifi-calling will display the on/off button is when it has a wifi connection.. I know, I know.. I must force myself to remember to shut the stupid app off before leaving the local network.. but I forget at times.
I have only found 1 work around, and I'm hoping someone else can chime in on this. I'd like to see if there is an easier way around this.. It can be fixed via freezing the app. Then the tmo network kicks in. As soon as the app is unfrozen, it goes back to searching out wifi and disabling all voice/data.. until I get a wifi connection.
Thoughts?
can someone test this to see if they get the same results?
Mine switches as it should when I leave a wifi area.
GideonX said:
Mine switches as it should when I leave a wifi area.
Click to expand...
Click to collapse
Seriously? You have wifi calling and wifi enabled. You shut off wifi and it automatically switches off wifi calling?
that's messed up. If I do that, I'm w/o service. Guess I'll reinstall the app..
GideonX said:
Mine switches as it should when I leave a wifi area.
Click to expand...
Click to collapse
Thanks!!! I have discussed this on the forums a bunch of times in misc. conversations and no one has said "Hey, that's not the case for mine." I thought it was a glitch with the app.
R&R'd the app.. good to go. Thanks so much.. It's been like this since I took it out of the box.

WiFi/4G problem

I have noticed that there have been a few times where WiFi is connected and 4G is connected also. The only remedy is to turn off and on WiFi. When this happens, sometimes I have no data connection (probably cause they are conflicting) but this can't be good for battery.
4G mobile network still connected when Wifi is ON?!
I have this exact same problem! Thing is, mine 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!
i dont have the problem of having both, i have the problem that my wifi seems to like turning itself off now and then. this has only started happening since temp root also
Thanks to Sdobron from the thread I had started, it looks like the My Account/My Device app may be the culprit. You can try killing the tasks/services and see if it helps. I personally just disabled both apps like I disabled all of the other bloatware, rebooted, and it seems to have fixed the problem so far (for the last hour anyway). Now I get only Wifi icon, not both Wifi and 4G, and the GPRS services is "Disconnected" as it should be when Wifi is on.
djmaz said:
i dont have the problem of having both, i have the problem that my wifi seems to like turning itself off now and then. this has only started happening since temp root also
Click to expand...
Click to collapse
Hmmm did you disable any apps, and if so, which? Is your Wifi sleep policy set to "Never"?

Wifi auto connect to AT&T public wifi - how to disable this?

I have the T-mobile LG G2 D801. Every time I am near an AT&T wifi hotspot, my phone "knows" my location and automatically turn on the wifi and connect to it, even skipping the usual web login agreement. This is the first time I have seen this feature on a none-AT&T phone. Has anyone else notice this?
Very interesting ability but how does my phone knows I am near the AT&T wifi when my wifi is already set to off?
How do I disable this feature (none-rooted phone).
I haven't noticed this on mine; I'll have to watch for it. There is a "scanning always available" setting in the Advanced Wi-Fi settings, it is enabled on my phone.
diamond12 said:
I haven't noticed this on mine; I'll have to watch for it. There is a "scanning always available" setting in the Advanced Wi-Fi settings, it is enabled on my phone.
Click to expand...
Click to collapse
Yes, this feature was turned off and my phone still automatically detects I am near a Starbucks and connect to the wifi there.
Do you have snapdragon battery guru installed?
Swizzle82 said:
Do you have snapdragon battery guru installed?
Click to expand...
Click to collapse
I do not
I ask because it manages your wifi and can turn it on automatically good app though. Idk what your issue might be then, I've never had an issue like that.

My wifi disconnects and phone uses my data when should not

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?
Click to expand...
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.
Click to expand...
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.
Click to expand...
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.
Click to expand...
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.
Click to expand...
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.

Categories

Resources