Database Develop

[Q] Wifi Help

hae helpers
my wifi works fine..it connects to my network..bt after its connected it keeps on scanning for other networks..which is unnecessary sinces its already connected to my network..n also its s battery eater..is there a way i can stop it from scanning for other network since its connected to my network??..thx

sumeetp said:
hae helpers
my wifi works fine..it connects to my network..bt after its connected it keeps on scanning for other networks..which is unnecessary sinces its already connected to my network..n also its s battery eater..is there a way i can stop it from scanning for other network since its connected to my network??..thx
Click to expand...
Click to collapse
It sounds odd- how can your wireless scan when its already connected. Does your wifi status say - connected?
Either install superpower app from the market. It will make sure that your wifi doesnt drain your battery or you can install OCLF 2.0 from market and tweak the wifi settings to ensure longer battery life.

It does not scan when connected to a wifi, only when you open the wifi settings page, so it can present you with an updated list.
Concerning: possible reasons are low signal strength or a rom variant which uses a lot of power, JPY for example. One solution is to exchange with other wifi driver. Some custom roms offer less powerhungry wifi.
Sent from my GT-I9000 using Tapatalk

Settings wifi scanning off when screen off or similar .
jje

I read on the Darky's ROM thread that this is normal android behaviour but yes it seams weird to me too.

WIFI slow while cellular connection enabled

I did a search and only found one reference to this in a post. So dont flame on if I missed it.
I can connect to my network fine at home over the WiFi but if I leave the cellular connection on it is terribly slow. If I go into airplane mode and then turn on the WIFI separately its blazing fast. It appears the cellular wants to take priority over the WiFi. Has anyone else experienced this or found what causes it. Below are my phone specs and network.
HD7 with WiFi, Bluetooth, cellular enabled.
Netgear wireless N

I completely agree with this statement btw.
In my basement my "wifi" connection is HORRIBLY slow on my hd7. Many, and I repeat MANY times I feel as though i'm still using my 3G connection instead of the wifi as it should.
Just wanted to comment on this, i'll search later on, maybe i'll find something else.

just turn on cellular connection when you need it , and turn off when don't need.(when u have wifi nearby)

Thats what I do but it shouldn't work like that. There should be WiFi priority when available for data services.

If ur wifi signal is too weak , it can be so.

dougolupski said:
I did a search and only found one reference to this in a post. So dont flame on if I missed it.
I can connect to my network fine at home over the WiFi but if I leave the cellular connection on it is terribly slow. If I go into airplane mode and then turn on the WIFI separately its blazing fast. It appears the cellular wants to take priority over the WiFi. Has anyone else experienced this or found what causes it. Below are my phone specs and network.
HD7 with WiFi, Bluetooth, cellular enabled.
Netgear wireless N
Click to expand...
Click to collapse
I have the same phone as you, from TMOUS, and I have noticed the same effect, cellular over-riding the wifi, and I think that the cellular is just set as the default... and I think that is the way it is intended, by the carrier(s), because then we would use our minutes/data up quicker then otherwise... I have noticed when using wifi, and not on airplane mode, that minutes/data are consumed at a MUCH quicker rate, than when on wifi w/airplane mode on... and thanks for pointing this out, I may not have payed as much attention otherwise... I am leaving TMOUS, maybe going to Simple Mobile, or something like that, and I will be keeping a much closer eye on it now... right now, with no carrier, I am using my phone strictly on wifi and it is pretty damn fast, and I only have an 802.11G router, not an 802.11N router like yours... which only makes me want an N router even worse... I'll post any more info as it appears, and thanks again!...

@ artmodeler At work I can understand a week signal but not at my house. I am about 10 feet away from the router which is located on my desk. Also the connection manager in the settings is showing full bars.
@ mlongue1 Yeah it works amazingly fast on my WiFi under airplane mode. I use Super Tube for my you tube client and theres little if any pausing to buffer large videos. Not so much when the cellular connection is enabled.

High battery drain on *some* WiFi networks

I'm having a strange issue with my Exhibit . I'm running CyanogenMod 11 20140714-UNOFFICIAL although I think I saw this earlier too. When I'm home on my WiFi, battery use it great. Under 2%/hour. When I'm at work on the WiFiit is pretty bad, around 6-7% per hour. If I turn off WiFi, it gets much better (maybe 3% per hour). Same thing if I forget the WiFi network at work. Sometimes in my battery use graph I can see it get flat for and hour and then get bad again -- I think this is losing the WiFi connection for a bit and then reconnecting.
Work recently moved and the results didn't change enough though my data service strength changed a lot. So I'm pretty sure it has to do with the WiFi network. Other people at work don't notice a drain when using WiFi, so I'm guessing it is a combination of the work WiFi and the phone.
The work WiFi is running tomato 1.27, which I administer. I sniffed the WiFi traffic with my laptop and saw a lot of ARP requests for 'who has address' for address not on the WiFibut on our unsecured network. So I separated that with a VLAN and that helped a bit but not a ton, and the ARP requests are much lower (maybe a ~1 / minute). Signal strength is as good or better at work than at home and at home there is way more congestion of neighbor's WiFi.
I know it isn't my phone usage as I would reboot my phone and not touch it for 3 hours and look at the battery drain at both work and at home and see these differences.
Any ideas on what makes the WiFi at work with a tomato router (vs some netgear wifi router) worse on battery than my home network. Work has maybe 7 clients connected at a time, vs probably just the phone at home. Any ideas on how to troubleshoot / debug. Packet sniffing on the WiFi didn't show anything that stood out.
Thanks!

exhibit679 said:
I'm having a strange issue with my Exhibit . I'm running CyanogenMod 11 20140714-UNOFFICIAL although I think I saw this earlier too. When I'm home on my WiFi, battery use it great. Under 2%/hour. When I'm at work on the WiFiit is pretty bad, around 6-7% per hour. If I turn off WiFi, it gets much better (maybe 3% per hour). Same thing if I forget the WiFi network at work. Sometimes in my battery use graph I can see it get flat for and hour and then get bad again -- I think this is losing the WiFi connection for a bit and then reconnecting.
Work recently moved and the results didn't change enough though my data service strength changed a lot. So I'm pretty sure it has to do with the WiFi network. Other people at work don't notice a drain when using WiFi, so I'm guessing it is a combination of the work WiFi and the phone.
The work WiFi is running tomato 1.27, which I administer. I sniffed the WiFi traffic with my laptop and saw a lot of ARP requests for 'who has address' for address not on the WiFibut on our unsecured network. So I separated that with a VLAN and that helped a bit but not a ton, and the ARP requests are much lower (maybe a ~1 / minute). Signal strength is as good or better at work than at home and at home there is way more congestion of neighbor's WiFi.
I know it isn't my phone usage as I would reboot my phone and not touch it for 3 hours and look at the battery drain at both work and at home and see these differences.
Any ideas on what makes the WiFi at work with a tomato router (vs some netgear wifi router) worse on battery than my home network. Work has maybe 7 clients connected at a time, vs probably just the phone at home. Any ideas on how to troubleshoot / debug. Packet sniffing on the WiFi didn't show anything that stood out.
Thanks!
Click to expand...
Click to collapse
try adjusting some of the settings in the wireless advance settings also make sure your wifi is using the least crowed possible channel and 1,6,and 11 can overlap without interference. easy way to find the best channels is to use an app on a laptop or smartphone with wifi.
Android Wifi Analyzer Free in app store
windows insidder 3 free
Linux LinSSID free
*NOTE too much interfernce may cause network delays which in turn force rechecking connection due to lost packets. also it after trying the above the second thing it could be is possible routers wifi is slowly going out. I've had a linksys router do that. new ping was awesome for e.g playing league of legends 81 when wifi notice her wifi connection kept droping. rebooted router and it worked fine for a a while then did it again and slowly became more frequent ping also increased to 106. replaced router with a new one and ping dropped to 73 and 0 wifi drops or slow downs. hope this helps

I'm pretty sure it isn't interference. At home there are 15 strong WiFi stations across all channels. At work, there are only 2 other WiFi stations and mine is at a channel far from them, so the X-talk from WiFi is way better at work. Also when work moved, I saw no change (although WiFi wasn't crowded at only location either) so I think it has to do with the WiFi network and not the environment.

did you test to make sure wifi isnt dropping packets either as well as check routers wifi intervals

did you test to make sure wifi isnt dropping packets either as well as check routers wifi intervals
Click to expand...
Click to collapse
How would you test if wifi is dropping packets? Just a ping on my phone? I can ping wireless consistently from my desktop, but that is over ethernet.
What do you mean by "wifi intervals"? Is that a setting I should see on my tomato firmware? "Beacon Interval" is set to 100, but I don't claim to understand that. "DTIM Interval" is set to 1.
Thanks,

exhibit679 said:
How would you test if wifi is dropping packets? Just a ping on my phone? I can ping wireless consistently from my desktop, but that is over ethernet.
What do you mean by "wifi intervals"? Is that a setting I should see on my tomato firmware? "Beacon Interval" is set to 100, but I don't claim to understand that. "DTIM Interval" is set to 1.
Thanks,
Click to expand...
Click to collapse
yes that is correct for wifi intervals in the tomato firmware. look at This for better info for what each setting is for. the 3 main ones i would be adjusting as needed is Beacon Interval , Fragmentation Threshold and Interference Mitigation.To test pack loss anything thats on wifi and can ping router. So yeah your phone will work. just make sure you ping the routers ip address e.g for linksys 192.168.1.1

I haven't changed any of the wireless settings yet, but I do have more data. My phone sometimes is on the wifi and has normal (low) battery usage. Today from 9:30 - 12:30 it was great, but after 12:30 there was a discontinuity in the battery vs time graph as the slope decreased by over a factor of 3. Not sure what changed -- I don't see different devices on the wireless or higher wireless utilization. I'm thinking something in the wifi trips a setting or something on the wifi isn't completing on the phone and is draining the battery.

ASUS routers (ac86u/ac87u/etc) - battery drain fix

I mainly work at home, so pretty much on wifi all of the day except for the odd hour or so to do school runs. I noticed that with WIFI on, i'm getting terrible battery life - less than 24hrs. This is with most things disabled (location history, google now, etc) but wifi and mobile data on all the time and GPS enabled. Of course mobile data doesn't kick in until i leave my wifi zone. Unfortunately even with location services off, Samsung doesn't have a option to disable the always scanning totally. This means ONLY when you are out of wifi connectivity will the always scanning option turn off (assuming you have the "allow always scanning" in the wifi settings turned off). Lo and behold with this setting (always allow scanning - when wifi on only) and spending more time on mobile data i notice my battery life is infinitely better. I went from the usual 30° battery drain slope to a flat line barely draining battery. So with no other change in apps/settings/etc, and just turning my wifi off, so LTE kicked in and phone in same location in the house i practically doubled battery life.
So then i started looking and reading. Finally it is clear it is my router/wifi draining the bloody battery so i started delving deeper. Now i have an asus ac68u with stock firmware. I changed the DTIM as follows under Wireless->Professional tab - (i can't post links or images so use the below in your browser)
193.104.35.163/asus.png
Now i'm back to a flat line drain on wifi.
May work for others.

(sigh)...my router doesn't let me configure those settings (ea9200). Still getting the drain

There could be multiple reasons for battery drain so this is not the holy grail for battery drain issues.
However the router issues is easy to identify. If you're getting battery drain for no reason at home/work where you are on wifi coverage, just switch wifi off and go onto your mobile plan (assuming you have reasonable 3g/4g/lte service) and look at your battery graph before and after. If you go from a ski slope to a flat line, then you have wireless problems. Otherwise look elsewhere. Remember your 'always allow scanning' setting should be set for 'wifi only' for this test.

This fix worked wonders for me. I immediately noticed 10x better battery life on par with having wifi disabled.

iforgotmyusername said:
193.104.35.163/asus.png
Now i'm back to a flat line drain on wifi.
May work for others.
Click to expand...
Click to collapse
hi..could you perhaps upload the pic to dropbox and share the link here? you could use a url shortener as well

qpalcb said:
hi..could you perhaps upload the pic to dropbox and share the link here? you could use a url shortener as well
Click to expand...
Click to collapse
I don't have a dropbox account, and i can' t post links yet so neither of that would work. Just put h t t p in front of that and it will work fine (and it's not a click bait, popup adverts, etc)

iforgotmyusername said:
I mainly work at home, so pretty much on wifi all of the day except for the odd hour or so to do school runs. I noticed that with WIFI on, i'm getting terrible battery life - less than 24hrs. This is with most things disabled (location history, google now, etc) but wifi and mobile data on all the time and GPS enabled. Of course mobile data doesn't kick in until i leave my wifi zone. Unfortunately even with location services off, Samsung doesn't have a option to disable the always scanning totally. This means ONLY when you are out of wifi connectivity will the always scanning option turn off (assuming you have the "allow always scanning" in the wifi settings turned off). Lo and behold with this setting (always allow scanning - when wifi on only) and spending more time on mobile data i notice my battery life is infinitely better. I went from the usual 30° battery drain slope to a flat line barely draining battery. So with no other change in apps/settings/etc, and just turning my wifi off, so LTE kicked in and phone in same location in the house i practically doubled battery life.
So then i started looking and reading. Finally it is clear it is my router/wifi draining the bloody battery so i started delving deeper. Now i have an asus ac68u with stock firmware. I changed the DTIM as follows under Wireless->Professional tab - (i can't post links or images so use the below in your browser)
193.104.35.163/asus.png
Now i'm back to a flat line drain on wifi.
May work for others.
Click to expand...
Click to collapse
I have the same router as you and I went to the professional tab. Then what do I do with the IP you posteD? I think this solution is the right one guys but I haven't figured it out yet
edit: Did not work

mrlooolz said:
I have the same router as you and I went to the professional tab. Then what do I do with the IP you posteD? I think this solution is the right one guys but I haven't figured it out yet
edit: Did not work
Click to expand...
Click to collapse
Paste the IP in your browser to show the screenshot he took with the settings he changed. Basically you need to set the DTIM Interval to 3 and the Beacon Interval to 300 for both the 2.4 GHz and 5 GHz bands.

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...