Printer is staying awake and phone battery drains overnight.

[KGB7]

Router: Asus AC68U. Firmware Merlin 386.14_2

I have a cell phone and a printer connected to the router via 2.4ghz band. Phone battery drains quite fast even when its not in use and printer never goes to sleep despite manually changing the settings in the printer to sleep after 30 min.

In the routers wifi advanced settings I have tried changing DTIM Interval between 3- 12. Beacon Interval between 100 - 1000. Only thing I haven't tried is performing full reset of the router or reflashing the firmware for the 3rd time, which I should probably do, but to be honest I don't feel like setting up all the settings from scratch right now.

Any suggestions what could be the issue? Cheers.

Edit: I connected the phone and printer to 5Ghz band this morning and now I just have to wait a few hours and see if there is a difference in battery life and printer goes to sleep.

 

[degrub]

weak wifi signal or interference from neighbors causing both to hunt for the station are likely causes. 5GHz reaches less distance than 2.4 GHz, so maybe make it worse or no better. Put the phone in airplane mode at night and turn off wifi on the printer. Turn it on when you need it. Otherwise, relocate where you can confirm strong signal from the AP/router.

 

[KGB7]

weak wifi signal or interference from neighbors causing both to hunt for the station are likely causes. 5GHz reaches less distance than 2.4 GHz, so maybe make it worse or no better. Put the phone in airplane mode at night and turn off wifi on the printer. Turn it on when you need it. Otherwise, relocate where you can confirm strong signal from the AP/router.

You gave me an idea that I'm going to test. I changed from Channel 6 to channel 11 and reconnected both devices to 2.4Ghz band. I should have an answer with in an hour.

When I connected both printer and phone to 5Ghz band earlier this morning, printer went to sleep and battery on the phone stopped dropping.

 

[KGB7]

Unfortunately the phone is still draining on 2.4Ghz band but the printer does fall a sleep. Guess ill reset the router and set it up from scratch again.

 

[sfx2000]

Unfortunately the phone is still draining on 2.4Ghz band but the printer does fall a sleep. Guess ill reset the router and set it up from scratch again.

Keep Beacon at 100, DTIM at 3 - this is generally good enough for most...

I would look at clients driving traffic into the WLAN with broadcast traffic - the printer is a key suspect here, maybe reset to back to factory and reassociate it..