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WiFi losing Internet link after extended sleep

I'm having a weird problem with Internet link over WiFi where after phone awakes from sleeping local network still works but Internet does not.
I'm next to the router, signal strength is "Excellent" with 72Mbps link speed. WiFi icon under quick settings is orange. If I toggle WiFi it will work again for a while but then it will fail again.
I've never had this problem on GS2 or GS4 or even the laptop or voip which runs off wifi 100% of the time.
I read somewhere that setting static IP might help but that shouldn't be necessary. Is anyone experiencing this?

[Q] Do you keep wifi "always on"?

I've been seeing mixed reports on battery life with keeping your wifi always on. Some say keeping it always on extended their battery life.
What do you have it set as? And how has it affected your battery life?

cakalusa said:
I've been seeing mixed reports on battery life with keeping your wifi always on. Some say keeping it always on extended their battery life.
What do you have it set as? And how has it affected your battery life?
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I keep always on but it does the opposite

I always have WIFI and bluetooth on. Take it off the charger in the morning and battery is usually 70+% at end of day.
GPS off. cellular data off (i use a prepaid voice-only service).

Wifi Sleep Policy is 'Always On', but I use an automation app (MacroDroid) to actually enable/disable wifi when I'm in/out of range of trusted SSIDs (using CellID triggers).
With autosync on and locations services set to battery saving with wifi scanning when disabled off I get the following results.
Wifi enabled connected to SSID (3G data is on but Android automatically prefers Wifi) - standby drain circa 1% per hour.
Wifi disabled (as no trusted SSID in range), 3G data on - standby drain 1 to 4% per hour (depending on network strength)
On 3G data with Wifi enabled but not connected to a SSID - standby battery drain 2 to 6% per hour.

neu - smurph said:
Wifi Sleep Policy is 'Always On', but I use an automation app (MacroDroid) to actually enable/disable wifi when I'm in/out of range of trusted SSIDs (using CellID triggers).
With autosync on and locations services set to battery saving with wifi scanning when disabled off I get the following results.
Wifi enabled connected to SSID (3G data is on but Android automatically prefers Wifi) - standby drain circa 1% per hour.
Wifi disabled (as no trusted SSID in range), 3G data on - standby drain 1 to 4% per hour (depending on network strength)
On 3G data with Wifi enabled but not connected to a SSID - standby battery drain 2 to 6% per hour.
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Click to collapse
That's some good info and data. Thanks!:good:

AutoCon : A Smart connection manager which saves battery and reduces data usages

Hello friends,
Presenting my first App - AutoCon
AutoCon will turn off the connections when screen goes off and turn them back on when screen turns on - Saves battery by turning off connections when you don't need them, Saves data usages. You can still be connected to internet by activating networks periodically when screen remains off!
AutoCon helps user to control the connections like Data, WiFi, Bluetooth with the activities of screen. This will prevent the unwanted usages of the network connections which leads to improve battery life!
Basic Principle :
It has been observed that the internet connections (WiFi and Data) are one of the primary reasons of battery drain. Also they consume battery when user don't need them. Typically users keep the mobile always connected to internet but majority of users don't require the always-on connection, but its sufficient for them to connect to internet when required.
Its painful for user to turn on the connection when needed and turn it off when done. Here comes AutoCon.
AutoCon will turn off the connections when screen goes off and turn them back on when screen turns on!
Also for countries like India where mobile data plans are still expensive, AutoCon will prevent the exes usages of mobile data by disabling it when its not required.
Main Features :
- Control Data, WiFi and Bluetooth connections
- Turn Off the connections when screen goes off
- Turn On connections when screen turns on
- Supports configuration of intervals after which connections are to be turned on/off when screen goes on/off
- Periodically activate connections in background (say every 1 hour, configurable) when screen is off so that user will not be totally disconnected
- Disable WiFi when its not connected to any network
- Disable mobile data when WiFi is connected
- Time Range: Connections will stay off in given time range (say at night 11 pm to 6 am, I don't want AutoCon to enable connections when I unlock the screen)
- When a particular app is running, do not disconnect when screen is off (for example I am speaking on Viber, so I want data to remain connected always even though screen is off)
- Everything is configurable - every interval, every setting.

Download
Get it free on play store
https://play.google.com/store/apps/details?id=com.suvi.autoconlite
If you like my work, support me by buying the full version
https://play.google.com/store/apps/details?id=com.suvi.autocon

More features coming soon.

I have posted the same app in wider audience. Please have your comments/feedback into the main thread.
http://forum.xda-developers.com/android/apps-games/autocon-smart-connection-manager-t2903112

Joining wifi when in sleep mode

I've noticed my S7 will not join an existing wifi area when locked / sleep mode.
I have a WOL task that runs when the phone reconnects to a wifi access point. I have to turn the screen on then I notice the "connected to wifi" message come up.
I have excluded tasker from batter optimisation, but I don't think that is the problem. Also, wifi on during sleep is enabled.

Which of these two options consumes less battery power?

I have a few apps that I need to be connected to the internet/data overnight and was wondering which would consume less battery power when the phone is idle. These apps are excluded from all restrictions and battery optimizations in Oxygen OS.
Currently I have it setup that wifi goes off when the screen is off and the apps I keep running overnight are connected to 4g/lte. This drains about 10~12% battery overnight.
Would it be better to keep these apps connected to wifi instead of 4g/lte? Do you think that would consume less power? I always thought keeping wifi on/connected to my home router all the time drains the battery faster than 4g/lte.
Any thoughts?

Wi-Fi is supposed to consume less power than data; makes sense since the phone doesn't need to use its antennas for 4G..

WiFi consumes less battery.

You should turn off that setting so WiFi stays on while the screen is off and you'll save battery.

Another vote for WiFi consuming less battery. Think about it: the WiFi signal just has to travel 50 feet or so to your WiFi router, versus cell data signal, which has to travel maybe a mile or more (depending on the location of the nearest cell tower - but you get the point). Or meters versus kilometers, if you deal in metric.
Pushing a signal a longer distance equals more power consumed.

WiFi vs. lte
With respect, I'm not sure and would like enlightenment.
If I turn off my wifi and set my phone to lte, then I'm turning off the power that goes to the wifi/antenna sub-system.
If I turn on wifi, my phone powers that, but still powers the lte connectivity to my cell carrier for phone calls and SMS messaging. Also, wifi -- while superfast -- constantly scans (and uses power) to look for a better wifi connection.
I haven't tested it for power consumption, but I usually turn off wifi when I go to sleep and I also turn off "mobile data." I don't need my Google and other data synchronized until I wake. I would turn the entire phone off to let it charge at a minimum temperature, but I like to keep it on overnight in case a close friend, relative or clients gets arrested.