Database Users

[Q] Losing data connection when switching between Wi-Fi and Cellular Data

Hi All,
Long time follower, first time poster..
I have a very annoying issue with my Nexus 4(4.2.1 and rooted on Tmob).
I use wi-fi connection at home and work and in-between I switch to HSPA or should I say, I was able to..
Lately I have been seeing that If I leave the Wi-Fi area, the phone doesn't switch to cellular data and the connection gets lost.
Switching to airplane mode and back brings it back most of the time but it's really annoying having to do so..
I did find an issue #40514 on the google android code page( code.google.com/p/android/issues/detail?id=40514)
Tried the suggested work arounds like "Auto Network" setting and it didn't seem to help..also have tmob in the APN settings. Still the only thing that works for me is toggling the airplane mode.
This happened to me once on my previous Gnex but with N4, it started to happen all the time.
Does anyone have a better solution to this issue?
Thanks
Oz

even I face the same issue with this new Paranoid 4.1.2 ROM for Atrix 2. I've noticed only one ROM gave me consistent data 24/7, it was from same dev altered his NUMA B2.
But other than that, this has been a repeating problem in all ROMS. Data stays on for hours without issue but suddenly drops and never comes up, other than air plane toggle. Somebody mentioned it is with the network and trust me it is not..
but I'm also eagerly waiting for a solution

krisxda said:
even I face the same issue with this new Paranoid 4.1.2 ROM for Atrix 2. I've noticed only one ROM gave me consistent data 24/7, it was from same dev altered his NUMA B2.
But other than that, this has been a repeating problem in all ROMS. Data stays on for hours without issue but suddenly drops and never comes up, other than air plane toggle. Somebody mentioned it is with the network and trust me it is not..
but I'm also eagerly waiting for a solution
Click to expand...
Click to collapse
Yea, at first I thought it has something to do with rooting but apparently it is happening with non-rooted phones as well..Google needs to address this issue..

ozgurust said:
Yea, at first I thought it has something to do with rooting but apparently it is happening with non-rooted phones as well..Google needs to address this issue..
Click to expand...
Click to collapse
Are google aware of this wireless connectivity issue? I've posted and started another thread which details a 3G data issue... :/

LPX4 said:
Are google aware of this wireless connectivity issue? I've posted and started another thread which details a 3G data issue... :/
Click to expand...
Click to collapse
Just throwing in my two cents; I starred the threads that I *think* are related on the google tracker. My experience is like this:
I start up Sirius on my phone before leaving home (On wifi)
Driving to the end of my development and then lose WIFI which in turn turns my 3g/4g gray for about a half mile
Picks 3g/4g back up eventually
As I'm driving to work if I end up picking up any open WIFI spots that have a login, once that happens I lose 3g/4g again then have to either wait till that access point is out of range or just turn off my WIFI before data will pick up again
It's pretty annoying; probably going to have to create a tasker profile to turn off wifi when leaving the house and back on when I get home.

Same problem on an LG F6 Optimus
I just got a brand new LG Optimus F6 and I'm noticing this same issue. The phone is stock and runs 4.1.2
Anyone found a solution?

the issue continue in n4 with 4.4?

[Q] Help! Wifi slow with APPs only!

So as of the past few days my apps BARELY move when im on wifi. Facebook, gmail, all ridiculously slow. I did a speedtest and im getting good down and up speeds, 30 down, 5 up. My wife's android (different model) has no issues when on wifi so i cant blame the router. If i use the browser on the phone i have no issues at all, it is strictly with apps. I have no idea what could be causing this. I tried searching and couldn't find a solution any where. Any help would be appreciated. I am currently on version 4.4.2.
Things i have tried: disabling wifi optimization, changing location settings, turning off the radio to just use wifi.
Just strange this happens out of the blue.
Thanks!
Lou

Think back, what have you installed recently? What has been updated through the Play Store or other such service? Go through each entry in settings and verify you haven't inadvertently checked or unchecked something. Turn off all syncing and disable any auto photo, system back up etc uploading. Check in about phone and see if you're up to date on system software. If you are you're probably not getting an OTA.
If nothing else, you can always back up data and such off phone and do a factory reset.
Sent from my Nexus 4 using Tapatalk

So here is an interesting development. I was away this weekend and was able to jump on another WiFi network connection...problem went away! Came home, still very slow! Why would it be just my phone and not my wife's? Double checked all of my phone setting and they are fine. I have a Comcast all in one modem/router so I'm not sure how to access it. I'm going to call them to find out. When I do get in there what should I check for??

"Ready to connect when network quality improves"

Hi guys,
Getting this message upon connevting to virtually every wireless network sinse rootibg my phone, is there a root tweak to disable betwork quality checking ? On a G900F
Thanks

Anyone?

You should be able to turn off smart network switching under wifi settings that will solve it.

Nice one thank you! I will see what happens!

turning off smart networks helps, but if the wifi signal is too poor it will not connect anyway

qrono said:
turning off smart networks helps, but if the wifi signal is too poor it will not connect anyway
Click to expand...
Click to collapse
u cannot change that.

ready to connect when network quality improves
We have two Galaxy 5s in our home (AT&T and T-Mobile). Both just started getting this message last night. "ready to connect when network quality improves"
Its multiple access points, multiple networks. Eating battery like crazy. Dropping and reestablishing connections to WiFi every 15 to 60 seconds.
Pain in the @zz

Turn off "smart network switch"
I also started getting "ready to connect when network quality improves" messages constantly as the network connected and disconnected. Turning off the "smart network switch" option fixed the problem. I also leave the annoying Samsung Connections Optimizer turned off.

Smart Network Switch Off?
I just got my S5 about 6 weeks ago. I have had NO issues until this week. A few days ago, even though wifi notifications were turned OFF - I kept getting this "connected to network name" message on the bottom of my phone. When I went into wifi settings this morning, I noticed it would switch from connected (very strong signal strength) to "waiting for signal quality to improve". It constantly goes back and forth - 5 seconds or so on each. This is not an issue on any other device connected to the wifi router at my home and I just tried it at work - happens here too.
I checked to make sure wifi notifications were off - they were - but the pop up still appears over and over. I think that's another issue separate from this because if notifications are off you should not be getting any!
I have done as suggested here and turned off the smart network switch, however, does that now mean that I will be switched back and forth every 5 seconds from data to wifi? That defeats the purpose of connecting to wifi to save on monthly data plan charges.
AFTER noticing this problem this morning, I went to see if there were any software updates - there were (Lollipop). I did download that, but no change.
How does turning this off affect where my phone pulls from? Uses data or wifi?
Thanks for any help!

Mizz_J said:
I just got my S5 about 6 weeks ago. I have had NO issues until this week. A few days ago, even though wifi notifications were turned OFF - I kept getting this "connected to network name" message on the bottom of my phone. When I went into wifi settings this morning, I noticed it would switch from connected (very strong signal strength) to "waiting for signal quality to improve". It constantly goes back and forth - 5 seconds or so on each. This is not an issue on any other device connected to the wifi router at my home and I just tried it at work - happens here too.
I checked to make sure wifi notifications were off - they were - but the pop up still appears over and over. I think that's another issue separate from this because if notifications are off you should not be getting any!
I have done as suggested here and turned off the smart network switch, however, does that now mean that I will be switched back and forth every 5 seconds from data to wifi? That defeats the purpose of connecting to wifi to save on monthly data plan charges.
AFTER noticing this problem this morning, I went to see if there were any software updates - there were (Lollipop). I did download that, but no change.
How does turning this off affect where my phone pulls from? Uses data or wifi?
Thanks for any help!
Click to expand...
Click to collapse
+1 with exact same timelines/symptoms and upgraded to Lollipop and no diff too.

I started getting this message on my S5 last night! The connection will hold for about 10-15 seconds before reverting to LTE.
Tried resetting router settings, playing with different wireless settings - changing channel width and turning the visibility on and off.
Then "forgot" the network and readded it again.
It seems to be holding a stable connection without it dropping and was able to download a few items from the play store without dropping.
Will update if it changes.

Same here S5 900F
jsobey said:
+1 with exact same timelines/symptoms and upgraded to Lollipop and no diff too.
Click to expand...
Click to collapse
Exactly the same issue / model / timing / battery issue !
Is there a bomb timer on that mobile ?

jsobey said:
+1 with exact same timelines/symptoms and upgraded to Lollipop and no diff too.
Click to expand...
Click to collapse
Me too - I've been searching for weeks to figure this out - tried every known fix .... nothing has helped. I've even reset/changed/updated my wifi settings on my router. Nothing has helped. My S5 is the only one that has this problem. Other phones in the house have no problem - S4 and others.... I just don't know whats going on. I maxed my data avoiding this issue - but I really need a fix for it.

sport2237 said:
Me too - I've been searching for weeks to figure this out - tried every known fix .... nothing has helped. I've even reset/changed/updated my wifi settings on my router. Nothing has helped. My S5 is the only one that has this problem. Other phones in the house have no problem - S4 and others.... I just don't know whats going on. I maxed my data avoiding this issue - but I really need a fix for it.
Click to expand...
Click to collapse
This problem was driving me insane......I had it and managed to fix it (hopefully been going ok for three days now) I have a samsung Galaxy S5 on EE.....I backed everythingh up and did a factory data reset. Hope this helps.

I have a Galaxy S6 and have the exact same issue. I have called Samsung, my carrier (US Cellular), and tried a local place to get it fixed, but no one has ever heard of this issue. Amazon Photos was hogging a lot of bandwidth and backing up on wifi only so I stopped using that. Still not much of an effect. Using FB or a video is almost impossible because they won't load or refresh. I've tried all of the suggestions, but don't see a final fix. Can anyone help? This is my second S6 with the issue.

anybody having issues with the handoff between WiFi and LTE?

If Im listening to Spotify at work or something and I'm connected to WiFi if I turn off WiFi and use LTE it doesn't know what to do I'm in a state of having LTE but it won't allow me to connect to anything unless I reboot. I'm using a TMobile version converted to OOS 9.0.12 rooted with magisk. The only thing I'm thinking is I'm using adguard as a VPN and I feel that might be messing up the handoff.
Any thoughts and help are appreciated I thank you in advance

Same problem.

Tsyina said:
Same problem.
Click to expand...
Click to collapse
Cool it's not just me

I noticed the same thing when steaming with Aimp. It's not a problem in general. Aimp is the only app in my lineup that does that. Data works, as I can browse and whatnot, even though Aimp is not detecting the switch. When switching to data, I just shutdown Aimp, wait a minute or two and fire it up again. I played around with the mobile data always active option in developer options but it didn't help.
Tmo convert - 9.0.13

It happens way before for me even in t-mobile firmware. I also did convert from t-mobile to one plus firmware with every setting retain. The handoff between LTE and wifi is very slow(The only good handoff experience i ever have for LTE and wifi is from Samsung, it switch immediately when wifi is lost). The 6T keeps hanging onto the wifi signal even when it really low and doesn't have a connection. The reverse would also apply, the 6T try to connect to known wifi and hand off too early and the connection got cut. I use youtube vance it a take some time for the connection to reconnect or I have to manually refresh, the same situation for other apps.

I just tried switching while streaming a YouTube video. The handoff was immediate when switching back and forth a few times. I'm convinced it's just certain apps that get hung up.

Cablespider said:
I just tried switching while streaming a YouTube video. The handoff was immediate when switching back and forth a few times. I'm convinced it's just certain apps that get hung up.
Click to expand...
Click to collapse
For me manually switching does happen immediately with youtube, it the problem when driving and you can't do that. My 6T will try to hang onto my wifi signal until it goes down to one bar and connection got cut off, then it switches. However during the hanging onto the wifi signal portion there are no connection. I do have smart switch enable.

well think I figured out the handoff issue at least my problem, using adguard as a VPN was messing with the handoff after pausing it the handoff is instantaneous

I have a similar issue when I'm at work I use Wi-Fi but when I leave work and I'm out of range of Wi-Fi it doesn't switch over to LTE a lot of times it'll just show you know my full signal but it doesn't say LTE and I have no internet then the only way I found the fix it is by rebooting my phone does anybody know how to maybe correct this and by the way I'm not using any VPN or any weird apps

I experienced the same thing when I was on T-Mobile service. About a month ago I switched back to Verizon and noticed the handoff was much faster to the point where you didn't notice and apps didn't notice. Not sure if it matters but when I switched to Verizon I was running the oneplus 6 pixel expirence caf build and still am right now.

I pretty much stopped using wi-fi. I don't use a lot to begin with. Straight Talk boosted their data limit to 25GB a few months ago. Even with streaming, I never get even close to going over. Before, I use to have wi-fi auto switch turned on, but never noticed a problem with it switching between wi-fi and LTE.

Anyone else having issues with MMS on T-Mobile (international version)?

I ordered my OP8P directly from OnePlus, but my MMS doesn't seem to be working. Anyone else had the issue?
I actually got a message that the settings were not correct, and that the correct ones were being sent to my phone (had never seen that before). I looked at the APN info, and it seems to be correct... based on memory.

I'm on T-MOBILE also and received the same message. The phone had an update so I installed and rebooted the phone. All call,text, MMS, data worked like it's supposed to. Try rebooting?

I have issues when connected to WiFi, message comes in but doesn't download

hschreibz7 said:
I'm on T-MOBILE also and received the same message. The phone had an update so I installed and rebooted the phone. All call,text, MMS, data worked like it's supposed to. Try rebooting?
Click to expand...
Click to collapse
I've tried rebooting. Things are a lot better, but I still have some issues with calling out (can't remember the message... will try and get a screenshot next time). If I immediately try again, the call will go out.
I'm also not seeing any wifi calling. The feature is enabled, but it doesn't seem to be working... even on the "wifi calling preferred" setting.

Just wanted to post an update.... still having issues. MMS pretty much never works with wifi on. For this reason, my wifi is off pretty much all day. It never fails that as soon as I turn it on, a picture or group message comes in.
Also, this does not affect SMS or RCS messages, which appear to come in over data somehow.... just MMS.
Need a fix bad.

I'm having the same issues with T-Mobile. I'm leaving wifi off in the meantime. Hope there is a fix soon.

That was supposedly fixed with the last update. What software version are you on?
Sent from my IN2025 using Tapatalk

Hi, not sure if it would make a difference but I'm using Google messages with the chat features enabled. I never noticed anything unusual though but I live in Louisiana. Sorry to hear that. I know there is an option for mobile and wifi (dual-channel network optimization) that I haven't been using. Anyway I hope this clears up for y'all.

I'm on 10.5.6. I just went to t mobile and got a new sim card.. It didn't resolve the issue.

Use Textra app, go into settings for Textra and it has option for TMobile WiFi, works great

Samuel Holland said:
Hi, not sure if it would make a difference but I'm using Google messages with the chat features enabled. I never noticed anything unusual though but I live in Louisiana. Sorry to hear that. I know there is an option for mobile and wifi (dual-channel network optimization) that I haven't been using. Anyway I hope this clears up for y'all.
Click to expand...
Click to collapse
You really, REALLY had my hopes up. It actually makes sense, but it doesn't work. I tried with both on and off... no luck. MMS messages (both inbound and outbound) are stuck until I turn off wifi.
cwalker0906 said:
Use Textra app, go into settings for Textra and it has option for TMobile WiFi, works great
Click to expand...
Click to collapse
I used to use the Textra app, but really prefer Google Messages for it's web app. I am on the PC all day, so it's aggravating to have to pick up the phone all the time. I've tried MS Your Phone, but it's not as easy to use, or as reliable.

I created a thread with a similar (but opposite) issue to what you're experiencing. A friend of mine with an international 8 Pro on TMO is having the exact issue you are.
https://forum.xda-developers.com/oneplus-8-pro/help/receive-mms-wifi-calling-tmobile-t4088673
Didn't get any help from that but you can try the APN trick for a temporary fix until it's patched for real. I also created a thread on Reddit for this and I think I found the solution. I use Textra, but that alone didn't help. Someone on Reddit told me to disable the stock messaging app, as well as revoke it's permissions to everything. Since doing that I'm no longer having issues. It's only been about a day so we'll see how it goes from here.
Hope I could help!

CosMiiK said:
I created a thread with a similar (but opposite) issue to what you're experiencing. A friend of mine with an international 8 Pro on TMO is having the exact issue you are.
https://forum.xda-developers.com/oneplus-8-pro/help/receive-mms-wifi-calling-tmobile-t4088673
Didn't get any help from that but you can try the APN trick for a temporary fix until it's patched for real. I also created a thread on Reddit for this and I think I found the solution. I use Textra, but that alone didn't help. Someone on Reddit told me to disable the stock messaging app, as well as revoke it's permissions to everything. Since doing that I'm no longer having issues. It's only been about a day so we'll see how it goes from here.
Hope I could help!
Click to expand...
Click to collapse
Duplicating the APN worked (of course, I did the whole thing then swiped back, thinking it would save, grr). I'm guessing it won't last long. It's just as easy to disable wifi for it to send... so weird that you're having the opposite problem.
**EDIT**
Nevermind... it didn't work. I was able to send out with wifi on (which I couldn't do before), but my wife's test message wouldn't download until I disabled wifi.
I had frozen the stock messaging app on day one, with tibu. I thawed it, revoked the permissions, and disabled it via settings this time. No luck "Not sent. Tap to try again".

Anyone find a fix for it yet? I thought 10.5.8 would help but I still can't receive or send MMS on WiFi.

mmad81 said:
Anyone find a fix for it yet? I thought 10.5.8 would help but I still can't receive or send MMS on WiFi.
Click to expand...
Click to collapse
Granted, I haven't done any extended testing yet, but I can send/receive MMS now with wifi connected. I upgraded about 4 hours ago, and this is probably the longest I've ever had wifi on.
Now that you've posted this, I'm skeptical it will last, though.
**EDIT**
Yep. MMS is still broken when on wifi. Geez....

mmad81 said:
Anyone find a fix for it yet? I thought 10.5.8 would help but I still can't receive or send MMS on WiFi.
Click to expand...
Click to collapse
The latest update seems to have fixed it for me. I was also having issues receiving calls. Callers would get a busy signal. The update fixed that as well. Maybe try taking your SIM out, reboot, then put it back in and reboot.

That didn't work. I'm finally getting notifications from my sports app after the 10.5.8 update. Just have to fix the wifi now.

Wifi still dies on me, but not with the ! on the icon. Just no traffic. I had to toggle it. But nowhere near as much as it used to. The MMS issue is the only reason I don't leave wifi on. I was really hoping it was fixed.

Same issue here even with most recent updates. MMS will work 1/10 times over wifi (sending & receiving) but not the other 9 times.
Since the update I've also noticed wifi issues - they may have been there before but didn't notice. Wifi seems to hang, I sometimes see a "!" next to the wifi symbol. In many cases I turn WiFi off and the connectivity issue in whichever app is resolved.
So at this point on TMobile there is no reason to keep wifi on, which is unfortunate because with their "5G" I actually get half the speeds of LTE. ?

BoxyBox said:
Same issue here even with most recent updates. MMS will work 1/10 times over wifi (sending & receiving) but not the other 9 times.
Since the update I've also noticed wifi issues - they may have been there before but didn't notice. Wifi seems to hang, I sometimes see a "!" next to the wifi symbol. In many cases I turn WiFi off and the connectivity issue in whichever app is resolved.
So at this point on TMobile there is no reason to keep wifi on, which is unfortunate because with their "5G" I actually get half the speeds of LTE. ?
Click to expand...
Click to collapse
Pretty much everything you said. I'm really upset and disappointed. I'm actually considering returning the phone and going back to the OP7P. Not even sure what the return policy with them is...