Database Develop

[Q] Wifi Problems (N 5Ghz)

I've been having issues connecting to my wifi. It will connect, then after a few seconds drop signal, then reconnect, etc... all in a more or less non stop action.
The SSID is not broadcast, it's an N only 5ghz signal, and I have MAC filtering (permit only) enabled.
My girlfriend's M7 connects without issue.
I don't know if it's the phone, my router, or Sprint Connection optimizer? This is extremely frustrating, any help would be appreciated.

PolarWind said:
I've been having issues connecting to my wifi. It will connect, then after a few seconds drop signal, then reconnect, etc... all in a more or less non stop action.
The SSID is not broadcast, it's an N only 5ghz signal, and I have MAC filtering (permit only) enabled.
My girlfriend's M7 connects without issue.
I don't know if it's the phone, my router, or Sprint Connection optimizer? This is extremely frustrating, any help would be appreciated.
Click to expand...
Click to collapse
Turn off Sprint Connection Optimizer and also Settings/WiFi/Menu/Advanced/ uncheck Wi-Fi optimization.

schmeggy929 said:
Turn off Sprint Connection Optimizer and also Settings/WiFi/Menu/Advanced/ uncheck Wi-Fi optimization.
Click to expand...
Click to collapse
Looks like it was the Wi-Fi Optimization. After unchecking that, the connection stabilized.
Thank you!

PolarWind said:
Looks like it was the Wi-Fi Optimization. After unchecking that, the connection stabilized.
Thank you!
Click to expand...
Click to collapse
No problem, old tricks from the M7

How do you switch automatically from wifi to cellular data when wifi signal drops?

When I'm out of wifi range or wifi signal is too weak, Nexus 6 does not automatically switch to cellular data. I have to turn wifi off before cellular picks up the data signal and runs with it. How can i do that automatically?

Sebring5 said:
When I'm out of wifi range or wifi signal is too weak, Nexus 6 does not automatically switch to cellular data. I have to turn wifi off before cellular picks up the data signal and runs with it. How can i do that automatically?
Click to expand...
Click to collapse
Under developer options select aggressive WiFi to cellular hand-off should help.

That is odd though, mine does it well right out of the box. Even this weekend, I was having major issues at home with Comcast cable and my service went out few times. Unlike iPhone, Nexus showed an ! by the wifi signal and then switched to LTE.

Sebring5 said:
When I'm out of wifi range or wifi signal is too weak, Nexus 6 does not automatically switch to cellular data. I have to turn wifi off before cellular picks up the data signal and runs with it. How can i do that automatically?
Click to expand...
Click to collapse
Thats odd. I find that it switches between wifi and data extremely fast.

Mobile Data Auto Off

Could not find an app where once Wifi is connected, Mobile Data is disable and enable when there is no Wifi connection.
Hope someone can help, thank you.

peanuts3 said:
Could not find an app where once Wifi is connected, Mobile Data is disable and enable when there is no Wifi connection.
Hope someone can help, thank you.
Click to expand...
Click to collapse
when the wifi is connected mobile data automatically turns off you dont need a app :/

Thanks are you referring to the Auto Network Switch under the Wifi setting?
When I set to Yes it gave a warning that it may auto switch to Mobile Data.
Suspect that if Wifi is not strong but still connected, it may switch to Mobile Data to get better connection which I do not want.
Pakman123 said:
when the wifi is connected mobile data automatically turns off you dont need a app :/
Click to expand...
Click to collapse

peanuts3 said:
Suspect that if Wifi is not strong but still connected, it may switch to Mobile Data to get better connection which I do not want.
Click to expand...
Click to collapse
I'm in the complete opposite camp, how I wish there's an option for the phone to automatically switch to mobile data when the wifi becomes practically unusable.
There's a wifi deadspot in my house where I often use the phone, and contrary to what you suspect, my observations indicate that as long as there's a wifi connection, no matter how weak the signal, the phone will try its best to send and receive packets over wifi.
I usually have to manually switch off wifi.

Thanks for your feedback.
I will monitor whether the outcome is similar like yours.
I will turn ON both the Mobile Data and Wifi and using the Wifi preference setting.
If it works as you have stated, I will be very happy.
My priority is saving the cost from Mobile Data which is expensive to me.
I would like to control all downloads/updates of apps through Wifi.
Will use Mobile Data only when Wifi is not available/connected.
mhaha said:
I'm in the complete opposite camp, how I wish there's an option for the phone to automatically switch to mobile data when the wifi becomes practically unusable.
There's a wifi deadspot in my house where I often use the phone, and contrary to what you suspect, my observations indicate that as long as there's a wifi connection, no matter how weak the signal, the phone will try its best to send and receive packets over wifi.
I usually have to manually switch off wifi.
Click to expand...
Click to collapse

There is an option in developer settings to keep mobile data active even when Wi-Fi is connected. That may help with your Wi-Fi dead zone.

I think this option works for one device only.
I would rather recommend deploying a repeater for the Wifi signal, which will serves all devices at the dead spot.
A simple repeater should cost about USD10/
carto-man said:
There is an option in developer settings to keep mobile data active even when Wi-Fi is connected. That may help with your Wi-Fi dead zone.
Click to expand...
Click to collapse

Thanks Pakman123 and mhaha, for sharing your experience.
So far testing as recommended works according to your views.
For mhaha, I believe a wifi signal repeater set up will resolve your concern.

peanuts3 said:
Thanks for your feedback.
I will monitor whether the outcome is similar like yours.
I will turn ON both the Mobile Data and Wifi and using the Wifi preference setting.
If it works as you have stated, I will be very happy.
My priority is saving the cost from Mobile Data which is expensive to me.
I would like to control all downloads/updates of apps through Wifi.
Will use Mobile Data only when Wifi is not available/connected.
Click to expand...
Click to collapse
You can look at which apps are thirsty data eaters in settings under mobile data usage. Then click on the hungry app, untick background data.
Turning off background data will keep the apps restricted to WiFi slurping.

Thanks for looking up.
Appreciate your good suggestion.
Didgesteve said:
You can look at which apps are thirsty data eaters in settings under mobile data usage. Then click on the hungry app, untick background data.
Turning off background data will keep the apps restricted to WiFi slurping.
Click to expand...
Click to collapse

Disconnecting WiFi

Hello,
I've used my Mi A2 around 2 weeks now and I'm really satisfied with the phone. However, I got some annoying issue about wifi. When the signal strength of wifi is not so strong (below -70 dbm), it tends to disconnect for around 10-20 sec and then reconnected again. This happened to me like 10 times since I got the phone. And wifi works perfectly without disconnections when the signal strength is strong enough.
Does anyone experience this issue? Or I got a defected device?
Thank you

Same here, sometimes it just disconnects ...
Sent from my Mi A2 using Tapatalk

It is a normal stock android behavior, because android detects that signal of wi-fi is to low, and tries to switch automatically to GSM mobile data, or to another wi-fi if it is available in the area.

I don't have this happen but wifi signal is strong and also; gsm data is turned off.
That *may* help to turn that off possibly, as it obviously can't (now) switch to it?

minnuss said:
It is a normal stock android behavior, because android detects that signal of wi-fi is to low, and tries to switch automatically to GSM mobile data, or to another wi-fi if it is available in the area.
Click to expand...
Click to collapse
Even if mobile network is off? Is there a way to change such behavior? I tried to find in the setting but what I just found is Aggressive WiFi to mobile handover, which was already turned off.
AsItLies said:
I don't have this happen but wifi signal is strong and also; gsm data is turned off.
That *may* help to turn that off possibly, as it obviously can't (now) switch to it?
Click to expand...
Click to collapse
It happened both when mobile network was on or off.

Marciano09 said:
Even if mobile network is off? Is there a way to change such behavior? I tried to find in the setting but what I just found is Aggressive WiFi to mobile handover, which was already turned off.
(
Click to expand...
Click to collapse
I think that it is called smart wifi, or wifi+ option in other types of android OS, and here it is just a automatic option in stock android i guess.
I don't mind it, because it will change my wifi router AP if it get stuck, and need an reboot, so it will automatically switch to another closest one that works.
You better think of some way to get a better signal then to turn off this function.
Try with aps like this on the link.
https://play.google.com/store/apps/details?id=com.seah0rse.swififree

minnuss said:
I think that it is called smart wifi, or wifi+ option in other types of android OS, and here it is just a automatic option in stock android i guess.
I don't mind it, because it will change my wifi router AP if it get stuck, and need an reboot, so it will automatically switch to another closest one that works.
You better think of some way to get a better signal then to turn off this function.
Try with aps like this on the link.
https://play.google.com/store/apps/details?id=com.seah0rse.swififree
Click to expand...
Click to collapse
The thing is that wifi also disconnected when there's no other nearby networks to switch to. I did something to get better signal in my room but this still happened sometimes.

Question WiFi Problems

Hi community,
I'm writing because I have a strange WiFi problem with my S21 Ultra which I had with no other equipment before.
Setup:
- Galaxy S21 Ultra
- FritzBox 7590
- Fritz WLan Repeater 1750E (2x for better range coverage)
- WiFi 5G Auto channel WPA2/3
- WiFi coverage is good (tested with a lot of other devices)
Phone Setup:
- Paired with the WiFi
- Do Not use Mobile Data
- automatically reconnect to wifi
Problem:
The phone does not automatically connect to the WiFi.
The phone also looses the connection to the WiFi several times a day.
When the phone is not connected to the wifi I open wifi settings.
- It happens that the wifi list is completely empty and the circle animation indicates that the phone is searching for nearby connections
- It happens that the wifi list contains a list of wifi networks the phone has seen before when it was connected last to a wifi
- Switching off an on the wifi helps to find the actual networks and the phone then connects back to wifi (most of the time)
I tried already several settings and combinations but so far none of them brought any success. So I would like to know if someone else had a similar issue or has an idea what could go on here.
To me it seems strange that the wifi scan is not working as I would expect it. I would expect the phone to continously refresh the wifi list with networks it sees, but always when the phone lost its wifi connection the list is not working anymore.

Try tinkering with the wifi channels and encryption until it shows up.
Or you can try resetting the routers to see if it does anything
This person has a similar issue
Wifi connection problems
Has anyone else have WIFI connection problems ? With not finding any WIFI until i factory reset it? And after a few days the problem reappears. Last time i didn't factory reset it and after 3 days, with no adjustment, the phone found WIFI, but...
forum.xda-developers.com

ftrueck said:
Hi community,
I'm writing because I have a strange WiFi problem with my S21 Ultra which I had with no other equipment before.
Setup:
- Galaxy S21 Ultra
- FritzBox 7590
- Fritz WLan Repeater 1750E (2x for better range coverage)
- WiFi 5G Auto channel WPA2/3
- WiFi coverage is good (tested with a lot of other devices)
Phone Setup:
- Paired with the WiFi
- Do Not use Mobile Data
- automatically reconnect to wifi
Problem:
The phone does not automatically connect to the WiFi.
The phone also looses the connection to the WiFi several times a day.
When the phone is not connected to the wifi I open wifi settings.
- It happens that the wifi list is completely empty and the circle animation indicates that the phone is searching for nearby connections
- It happens that the wifi list contains a list of wifi networks the phone has seen before when it was connected last to a wifi
- Switching off an on the wifi helps to find the actual networks and the phone then connects back to wifi (most of the time)
I tried already several settings and combinations but so far none of them brought any success. So I would like to know if someone else had a similar issue or has an idea what could go on here.
To me it seems strange that the wifi scan is not working as I would expect it. I would expect the phone to continously refresh the wifi list with networks it sees, but always when the phone lost its wifi connection the list is not working anymore.
Click to expand...
Click to collapse
You said the phone loses connection and etc. Does that happen only at the location you described, or does it also happen at other locations?
It is possible that your phone also gets confused with the router and the repeater.
1st you need to clearly understand if the issue comes from the phone or possibly from your WIFI devices. Once this is clear, you have something to go on with...

babyboy3265 said:
You said the phone loses connection and etc. Does that happen only at the location you described, or does it also happen at other locations?
It is possible that your phone also gets confused with the router and the repeater.
1st you need to clearly understand if the issue comes from the phone or possibly from your WIFI devices. Once this is clear, you have something to go on with...
Click to expand...
Click to collapse
- Phone is on standby (placed on a table, etc.)
- I turn it on to check messages,
- No connection to wifi
- Open wifi manager
- No wifi networks listed at all
I do not know why my router/network should be the problem. All other devices in the wifi work flawlessly. It cannot be that I have to restart my wifi router every time the phone finds no wifi at all. That makes no sense to me.
It looks more like the android wifi service is still on sleep and does not report new wifi networks (which would be necessary also to see any wifi at all).

May I suggest....
Settings -> Connections -> Wi-Fi -> (three dots it top right) ->Advanced
Make sure "Turn on Wi-Fi automatically" and "Wi-Fi power saving mode" are both off.
If you use a repeater is it a mesh or AP solution? I find Android will drag its feet letting go of a wifi signal even when walking into range of another known network. Had an extender in garden and even when down to 10% connection on Wi-Fi it would stay connected to extender, I had to turn wifi off and on quickly to get it to pick a better network.

ftrueck said:
- Phone is on standby (placed on a table, etc.)
- I turn it on to check messages,
- No connection to wifi
- Open wifi manager
- No wifi networks listed at all
I do not know why my router/network should be the problem. All other devices in the wifi work flawlessly. It cannot be that I have to restart my wifi router every time the phone finds no wifi at all. That makes no sense to me.
It looks more like the android wifi service is still on sleep and does not report new wifi networks (which would be necessary also to see any wifi at all).
Click to expand...
Click to collapse
It seems to be the phone...
Definitely try what lywyn suggested...

you can also submit an error report on Samsung Members app, it sends reports directly to Samsung and get the feedback.
Download the app from the Galaxy Store if you don't have it on your phone > Memers app > + button > Error report

lywyn said:
May I suggest....
Settings -> Connections -> Wi-Fi -> (three dots it top right) ->Advanced
Make sure "Turn on Wi-Fi automatically" and "Wi-Fi power saving mode" are both off.
If you use a repeater is it a mesh or AP solution? I find Android will drag its feet letting go of a wifi signal even when walking into range of another known network. Had an extender in garden and even when down to 10% connection on Wi-Fi it would stay connected to extender, I had to turn wifi off and on quickly to get it to pick a better network.
Click to expand...
Click to collapse
Unfortunately no success. I configured exactly like suggested. Does the S21 Ultra have problems with handover in meshed WiFi setups?

ftrueck said:
Unfortunately no success. I configured exactly like suggested. Does the S21 Ultra have problems with handover in meshed WiFi setups?
Click to expand...
Click to collapse
Never had any problem with my S21U (Exynos) with my Mesh WiFi (Deco X60) setup.

ftrueck said:
Hi community,
I'm writing because I have a strange WiFi problem with my S21 Ultra which I had with no other equipment before.
Setup:
- Galaxy S21 Ultra
- FritzBox 7590
- Fritz WLan Repeater 1750E (2x for better range coverage)
- WiFi 5G Auto channel WPA2/3
- WiFi coverage is good (tested with a lot of other devices)
Phone Setup:
- Paired with the WiFi
- Do Not use Mobile Data
- automatically reconnect to wifi
Problem:
The phone does not automatically connect to the WiFi.
The phone also looses the connection to the WiFi several times a day.
When the phone is not connected to the wifi I open wifi settings.
- It happens that the wifi list is completely empty and the circle animation indicates that the phone is searching for nearby connections
- It happens that the wifi list contains a list of wifi networks the phone has seen before when it was connected last to a wifi
- Switching off an on the wifi helps to find the actual networks and the phone then connects back to wifi (most of the time)
I tried already several settings and combinations but so far none of them brought any success. So I would like to know if someone else had a similar issue or has an idea what could go on here.
To me it seems strange that the wifi scan is not working as I would expect it. I would expect the phone to continously refresh the wifi list with networks it sees, but always when the phone lost its wifi connection the list is not working anymore.
Click to expand...
Click to collapse
sometimes it happen when you connect at certain locations.

If you haven't already done so give this a try. Settings, search "Wi-Fi", scroll down to Location, Improve accuracy - toggle on, Wi-Fi scanning - toggle on.

ftrueck said:
Unfortunately no success. I configured exactly like suggested. Does the S21 Ultra have problems with handover in meshed WiFi setups?
Click to expand...
Click to collapse
Mesh is a single network solution so should not be a problem.
The only other thing I can think of is the power-saving mode. My son has his Pixel on power saving all the time and I know sometimes he has to turn off/on wifi to get a connection when waking the phone up

I found the issue! It is WiFi Direct related. The app "nexar" from the dashcam is interfering with normal WiFi on this phone. Nexar conquers the WiFi functionality and is responsible for my wifi disconnecting. The app requires the "Location always" permission. If I remove this permission my WiFi works again normally. So: one has a similar issue: remove "Location always" permission from the nexar app. In my case it helped.

You said the phone loses connection and and many others. Does that show up best on the region you described, or does it also happen at different places?
Kodi nox
It is feasible that your phone additionally receives harassed with the router and the repeater.
1st you need to honestly recognize if the issue comes from the cellphone or likely from your WIFI devices. Once this is clean, you've got something to go on with...