Database Users

Using Wifi via WMWifiRouter consumes battery even when on AC power

Hi,
I use WMWifiRouter to share the 3G internet on my Hermes on my laptop. The problem I'm facing is, even with the battery fully charged and having the mobile on AC power - the battery runs out by 3 hours at max.
Is this normal behavior? Is the power consumption really that high when using internet (GPRS/HSDPA) and Wifi at the same time?
(my apologies in advance if this has already been answered - i tried the search )

nabeelmoeen said:
Hi,
I use WMWifiRouter to share the 3G internet on my Hermes on my laptop. The problem I'm facing is, even with the battery fully charged and having the mobile on AC power - the battery runs out by 3 hours at max.
Is this normal behavior? Is the power consumption really that high when using internet (GPRS/HSDPA) and Wifi at the same time?
(my apologies in advance if this has already been answered - i tried the search )
Click to expand...
Click to collapse
I don't know exact figures, but usually running 3g/HSPDA will drain the battery pretty fast, using WiFi will do the same, both together and I think it could be reasonable to see the phone die after a few hours of constant usage. But, if its plugged into AC power, I don't see why it would drain at all, or at least that fast...I am sure someone with more knowledge than me will chime in as well...

i used to be regular wmwifirouter user with my hermes and i can confirm that battery will jux drain regardless u put it in charge with usb or ac.
if i recall correctly, i think i see it somehere tat hermes has known issue that the charging will stop if it's get overheat and YES when using WIFI & 3G it can fried egg.
anyway, i hv quit wmwifirouter and stick to internet sharing with bt / usb

thanks for your responses... i guess than this is not unexpected.
and yes, it does heat up like anything. Also, sometimes it would stop charging as soon as i launch WMWifiRouter (infact i've noticed this behavior without WMWifi Router too :S) but usually quitting and restarting WMWifirouter or restarting the device fixes it.
The reason I can't use it with BT is that the signals in my room are really low, so i usually leave it in one end of the room where the signals are relatively strong and connect via Wifi
tried an HSDPA router I got from work, that fixes my issues, but I am still evaluating whether its worth it to purchase a router of my own

Strange battery drain with Connectify issue

My Desire HD behaves very strangely when I am at my office, draining the battery (with screen off) at an average rate of 60-70mA, while at home the drain is what most people get with custom ROMs (3-4mA).
The difference between office and home? I have examined what differed between the two and I have found that it has to do with the wireless network.
At home: wifi router
At the office: Windows 7 computer with USB Connectify "router"
I know it has to do with wifi because if I turn wifi off at the office, the drain is also 3-4.
I also know it is not just apps or data synchronization because at home I have everything the same way and the drain is 4-5mA.
Further, if I turn connectify off (and lose my wifi router) while leaving the phone's wifi on, I get the same low drain that I get at home.
I am sure it has something to do with Connectify, but I have no idea what is the difference (from the phone's point of view) between connectify's wifi and my home router wifi.
CoreDroid 3.2 with the ROM's default Kernel
Radio Radio_12.35d.60.140f_26.06.03.24_M2
SetCPU: Ondemand 245-1228
Anybody using connectify (www.connectify.me) had a similar issue?
Thanks!

Wifi and battery usage

Totally un-scientific test but what I've found is that WiFi is the biggest drain on the phone and in particular WiFi N usage.
Tests over 3 nights (left over night same apps running each night)
1st night Connected via WiFi N connection - lost 40% battery in 7 hours
2nd night Connected via WiFi G connection - lost 15% battery in 7 hours
3rd night Connected via 3G/HSPDA - lost 8% battery in 7 hours
Charging the battery also takes twice as long when connected to WiFi N
Don't know if this is a bug or the power requirements of WiFi N (maybe that's why Apple don't/won't support it?)

What firmware version did you use?
sent from my 2.3.3|dxkg3 DJGalaxy S2

parknook said:
Totally un-scientific test but what I've found is that WiFi is the biggest drain on the phone and in particular WiFi N usage.
Tests over 3 nights (left over night same apps running each night)
1st night Connected via WiFi N connection - lost 40% battery in 7 hours
2nd night Connected via WiFi G connection - lost 15% battery in 7 hours
3rd night Connected via 3G/HSPDA - lost 8% battery in 7 hours
Charging the battery also takes twice as long when connected to WiFi N
Don't know if this is a bug or the power requirements of WiFi N (maybe that's why Apple don't/won't support it?)
Click to expand...
Click to collapse
I can confirm charging takes much longer if connected to wi-fi n, i usually set wi-fi policy to off when screen off, this way charging takes the usual time. How do i set my wi-fi to g connection instead of n ? I'd like to test too, battery seems to drain kinda fast when connected to wi-fi n.

parknook said:
Totally un-scientific test but what I've found is that WiFi is the biggest drain on the phone and in particular WiFi N usage.
Tests over 3 nights (left over night same apps running each night)
1st night Connected via WiFi N connection - lost 40% battery in 7 hours
2nd night Connected via WiFi G connection - lost 15% battery in 7 hours
3rd night Connected via 3G/HSPDA - lost 8% battery in 7 hours
Charging the battery also takes twice as long when connected to WiFi N
Don't know if this is a bug or the power requirements of WiFi N (maybe that's why Apple don't/won't support it?)
Click to expand...
Click to collapse
I think it depends on what router you are connected to. It has been said that D-link routers causes a higher drain than others.
So which router do you own?
Sent from my GT-I9100 using Tapatalk

Sp1tfire said:
I can confirm charging takes much longer if connected to wi-fi n, i usually set wi-fi policy to off when screen off, this way charging takes the usual time. How do i set my wi-fi to g connection instead of n ? I'd like to test too, battery seems to drain kinda fast when connected to wi-fi n.
Click to expand...
Click to collapse
OT but how do you do that?

sunseaker said:
OT but how do you do that?
Click to expand...
Click to collapse
Settings->Wireless & Network->Wi-Fi settings->(menu button)->Advanced->Wi-Fi-sleepmode
Menu item names might differ, translating from swedish.

Awesome thanks for the tips
sent from my 2.3.3|dxjpe DJGTabs7

parknook said:
Totally un-scientific test but what I've found is that WiFi is the biggest drain on the phone and in particular WiFi N usage.
Tests over 3 nights (left over night same apps running each night)
1st night Connected via WiFi N connection - lost 40% battery in 7 hours
2nd night Connected via WiFi G connection - lost 15% battery in 7 hours
3rd night Connected via 3G/HSPDA - lost 8% battery in 7 hours
Charging the battery also takes twice as long when connected to WiFi N
Don't know if this is a bug or the power requirements of WiFi N (maybe that's why Apple don't/won't support it?)
Click to expand...
Click to collapse
The opposite is true for me. I have my wifi sleep policy set to "never" and I lose 1-1.5% an hour overnight. On the other hand, the signal at my house drops in and out so if I spend the night on 3G/HSDPA there is a large drain.

Steffe2 said:
Settings->Wireless & Network->Wi-Fi settings->(menu button)->Advanced->Wi-Fi-sleepmode
Menu item names might differ, translating from swedish.
Click to expand...
Click to collapse
OMG, I completely forgot about those settings. I remember seeing them once when I first got my device but never looked again.

Firmware and router model
Should have mentioned that it is 2.3.4 KG2
The wireless N router is a Cisco 610
The wireless G router is a Belkin

[Q] Wifi on - power consumption too high

I've noticed that the Note uses way too much power when I'm using the phone with Wifi-on vs when using it with 3G on, like 2 times more power.
I wonder if it's the wifi chip used in the Note or my wifi router at home (Tp-link 1043ND 300mbs N class router, 11b/g/n auto channel, auto 20/40mhz)
Same with stock rom, cassie's and rocket rom.
B/c of this I've started using the 3G access even at home, but I'd prefer to use wifi.
Anyone can fill in on this matter?

have same router, but I doubt it's cause of it.
With my dell streak I would lose around 3% battery overnight with wifi on, with the gnote I lose around 10%.
Really sucks.
I got this program, wifi TX power, but still din make test to see if can it works on the gnote to reduce wifi antenna battery usage.

some router seem to have problem in battery drain for wifi. 2wire have this problem too . best way is disable wifi when you are not using?

I've noticed something, don't know if it helps though. After connecting to a wifi router, go into settings --> wireless and networking --> wifi settings (the tab where you view the available wifi networks).
On stock 2.3.6 KK5 even if i am connected to a router it keeps scanning continuously for other wifi hotspots (look for the little circle on the right). I found no option to disable auto scanning. I have notify for open networks disabled. I don't see the same effect on my X10.
Any ideas if that causes the drain?
Edit: I've emailed samsung about the above mentioned in this post. Hopefully they will clear this up.

WiFi 2.4GHz vs 5GHz Power Consumption

I have been researching on Power Consumption between 2.4GHz and 5GHz WiFi. the reason for that is my Exynos N910C seems to drain so much battery when it's on 5GHz WiFi during stand-by / sleep. And of course drains even more when in use.
My set up:
1. Asus RT-AC87U, WPA2, 2.4Ghz and 5GHz, SSID names are differentiated between the 2 bands, eg. WiFi and WiFi 5G.
2. Router placed on the Ground Floor around the back of the house. My Room is upstairs around the front of the house.
3. WiFi Signal strength: 2-3 bars for 2.4Ghz, 1-2 bars for 5Ghz.
4. Phone is not rooted, everything stock, latest firmware, bloatware disabled, only GMail Auto Sync, and WhatsApp running.
5. Phone has been Factory Reset and even reflashed with the latest firmware.
6. Under WiFi's Settings, I unchecked Smart Switch and under Advanced settings, I pretty much unchecked everything in there.
7. Under *#0011#, WiFi is set to Power Save ON.
This setup drains around 1-1.5hr per battery % on 2.4GHz (logged with Battery Monitor Widget) but 20-30 minutes per battery % when on 5Ghz.
At first I though, it could be because the signal is weak in my room, so I bought RP-AC52 and configured it as an Access Point (not as a Repeater) in my room. Once set up was completed, both WiFi band signal are now at full bar so I went to test it again..... but the battery drain rate remains the same! The phone is just 1.5 meters away from the Rp-AC52 Access point.
I've looked up on articles regarding the power consumption between the 2, they keep saying they should be the same, but it is clearly not at least on my phone.
Could anyone test 5GHz WiFi power consumption please and see if it's just me? Thank you in advance.

Higher frequency always means higher consumption.

Lodix said:
Higher frequency always means higher consumption.
Click to expand...
Click to collapse
I kinda figured that part, but 3x the power consumption vs 2.4GHz? And I'm sure alot of people here with dual band routers prefer 5GHz, but I wonder if they are aware it's such a battery hog compared to 2.4Ghz... or even 4G.

A late answer here but if someone is searching in the thread.
On the 5 GHz band of the AC87U, I cannot seem to get the powersave mode of wifi to work, which would explain why the draining is so high.

My experience of using 5ghz on my Snapdragon, is that it would always disconnect when the phone was asleep, even if I had always on. When I unlocked the screen it would take some seconds, then it would connect again to the WiFi. So I'm only using 2.4ghz now.

I have never had any problems with 5Ghz on the Note 4 Snapdragon. The last time I checked I think it drained around 1%/hour, maybe less. The fact I'm using FreedomPop on it though does really hurt the battery for obvious reasons (constant VoIP connection).
I wish Google Apps were less aggressive though. I have my old Optimus 3D as a backup phone with an extended battery and gets 14 days WiFi off, 7 days WiFi on with Google apps signed out, only a couple of days with it signed in.

ShadowFlare said:
I kinda figured that part, but 3x the power consumption vs 2.4GHz? And I'm sure alot of people here with dual band routers prefer 5GHz, but I wonder if they are aware it's such a battery hog compared to 2.4Ghz... or even 4G.
Click to expand...
Click to collapse
Pixel 4A
Same. I guess you know by now why that happens. Reasons are DHCP timer, AP balancing, server side software bug, interference, ARP flooding and Wifi Multicast.
I have spent past few weeks scouring through the internet and finally learned about them all one by one.