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!
Related
In one hand, using the Wifi router is simple. On the other hand, Wifi draws more battery power than bluetooth...
How long do you intend to use it for as, in my opinion, both are a poor long-term solution due to the power draw.
Also, bluetooth may use less power but it will also create a bottleneck that will mean that you have to use it longer.
Yes both will eat power. Cable is much better, however if you have no choice then I'd use bluetooth it consumes a bit less power than wifi.
That said if you use Linux, as I do on some laptops, (and maybe Mac? I dont use.) you might have some trouble getting internet to flow through bluetooth, in which case wifi is better.
I would use WiFi, much easier to setup and use on the fly just as any wireless router is. In either case, I believe your best bet is to have it plugged in during use as power usage will be high either way!
The Wifi router of the HD2 only supports WEP.
That's a "no go" for me...
Jack Daniel's said:
The Wifi router of the HD2 only supports WEP.
That's a "no go" for me...
Click to expand...
Click to collapse
Why not? What secrets do you have on your pc....and do you live in an apartment block surrounded by hackers?
I can plug my hd2 into my laptop and surf the net via mobile web. But how do i set it up so I can use the hd2 as a WiFi modem ?. Even with WiFi on, it still uses mobile web. Updating my laptop via my hd2 takes hours lol.
BTW I have WiFi router in my home.
fallenmonk said:
I can plug my hd2 into my laptop and surf the net via mobile web. But how do i set it up so I can use the hd2 as a WiFi modem ?. Even with WiFi on, it still uses mobile web. Updating my laptop via my hd2 takes hours lol.
BTW I have WiFi router in my home.
Click to expand...
Click to collapse
You have to have the WiFi router app. Google XDA WiFi router for Windows Mobile you will find it. Oh and by the way just because it is WiFi does not mean it will increase the speed. The speed is dependant on your cellular data signal you know Edge or 3G.
I have never used the wi-fi app, and have had no need to do so so far. Bluetooth works two different ways--through DUN or PAN.
However, I could see certain situations where that could come in handy. FOr instance, with a device that cannot BT tether, but can access wi-fi--for instance if one has an Ipad
I used 2 apps to compare. SpeedTest.net and Xtremelabs Speedtest. I have a 2Mb connection and it test correct on my laptop both wired and wireless but with those 2 apps, my DHD reports ~223Kbits. I run the test several times (around 20 times) and it always shows similar results. Only one run which I did after returning home showed 2Mb. Never saw the same again.
Anyone noticed the same? maybe it's the way those apps measure or is it my phone?
You tested what ? Your phone connected via WiFi to your home internet, or your phone GSM/EDGE/HSPA connection ?
The home internet can be explained by downloading something else through other computers on your network or by lower wifi speed negitiated between your phone and wifi router.
If you measured your mobile connection, it could be that you simply don't have HSPA inside your house and it drops to EDGE or UMTS -> sub-300kbit speeds.
faugusztin said:
You tested what ? Your phone connected via WiFi to your home internet, or your phone GSM/EDGE/HSPA connection ?
The home internet can be explained by downloading something else through other computers on your network or by lower wifi speed negitiated between your phone and wifi router.
If you measured your mobile connection, it could be that you simply don't have HSPA inside your house and it drops to EDGE or UMTS -> sub-300kbit speeds.
Click to expand...
Click to collapse
thanks,
I already know what you mention.
I test wifi connection. It is supposed to check data transfer rate between my local wifi connection and the Internet. I do the same on my laptop at same location and get 2Mbits.
My mobile connection here is unstable=(sometimes GPRS sometimes 3G) so I won't bother to test from here. I am only concerned about wifi results.
Are you getting those correct?
In case of WiFi, there are many factors which can slow it down. But since you are using the WiFi on your laptop too, we can exclude factors like interference from other WiFi networks or any other factors which could make your connection to your router problematic.
This brings it down to the phone itself. Now the questions is - do you use any kind of WiFi security ? If yes, can you turn it off just for test (yes, i'm asking you to have a unsecured WiFi network for a while). This way you can exclude the possibility that it's the encryption which slows you down. If it will speed up, your problem lies in encryption, and that brings up the question if you have USB debugging enabled or not - you should have, as it fixes the 100% CPU usage bug. If your CPU is used up thanks to this bug, then of course all encryption is slower, which means your data transfer is slower.
faugusztin said:
In case of WiFi, there are many factors which can slow it down. But since you are using the WiFi on your laptop too, we can exclude factors like interference from other WiFi networks or any other factors which could make your connection to your router problematic.
This brings it down to the phone itself. Now the questions is - do you use any kind of WiFi security ? If yes, can you turn it off just for test (yes, i'm asking you to have a unsecured WiFi network for a while). This way you can exclude the possibility that it's the encryption which slows you down. If it will speed up, your problem lies in encryption, and that brings up the question if you have USB debugging enabled or not - you should have, as it fixes the 100% CPU usage bug. If your CPU is used up thanks to this bug, then of course all encryption is slower, which means your data transfer is slower.
Click to expand...
Click to collapse
Strange, you know what? I connected to USB in order to sync and verify USB debugging (it was on anyway) but after sync, I run the test and it shows above 2mbits but one time it showed 1,2Mbits. The same goes with xtremelabs speedtest.
Now, I can't tell if it's due to the usb connection. I restarted my phone earlier anyway and it still measured slow connection at the time that my laptop was measuring high.
I ran the test so many times that I am 99% sure that the only difference this time was the connection to usb for sync.
I can't exaplain this, I don't know if you can
Then, after a while I try again and it goes down again. I sync but still stays down so that's irrelevant.
I perform the same test on my laptop right after this one and from the same location and it's always high.
I don't know how to explain this
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.
My system: HD2 with several ICS 4.0.4 SD version starting from Windows Mobile 6.5
As soon as I add the eduroam wifi network with TTLS or PEAP authentification I got battery drain of 60-70 mA in standby. This is not only when connected to eduroam but also when connected to other wifi networks. Battery is fine with wifi in standby as long as eduroam is not set up in my wifi network list.
Could anyone confirm this behaviour? It might be related to the encryption and access control through TTLS or PEAP!? It does not happen if I only add WPA networks.
Thanx for contributions to this thread.
huepfer said:
My system: HD2 with several ICS 4.0.4 SD version starting from Windows Mobile 6.5
As soon as I add the eduroam wifi network with TTLS or PEAP authentification I got battery drain of 60-70 mA in standby. This is not only when connected to eduroam but also when connected to other wifi networks. Battery is fine with wifi in standby as long as eduroam is not set up in my wifi network list.
Could anyone confirm this behaviour? It might be related to the encryption and access control through TTLS or PEAP!? It does not happen if I only add WPA networks.
Thanx for contributions to this thread.
Click to expand...
Click to collapse
whats eduroam? is it a program?
cause it seems like its keeping the wifi connection open constantly due to some sort of data transmition.
elesbb said:
whats eduroam? is it a program?
cause it seems like its keeping the wifi connection open constantly due to some sort of data transmition.
Click to expand...
Click to collapse
Eduroam is a network of hotspots in Universities in The Netherlands. So with your universities login details you can log on to the wifi network at your own as well as other universities across the country.
This is a very nice idea, but I think the way the security (TTLS + PEAP) works, drains our phones battery..
bever86 said:
Eduroam is a network of hotspots in Universities in The Netherlands. So with your universities login details you can log on to the wifi network at your own as well as other universities across the country.
This is a very nice idea, but I think the way the security (TTLS + PEAP) works, drains our phones battery..
Click to expand...
Click to collapse
THanks for the lesson unfortunately i live in USA so i was clueless as to what that was. And the way it seems it just seems like thats how the network works OP. I would just tell android to shut wifi off when the screen turns off while on these networks, unless you require getting push notifications via WiFi then you cant. But it seems like your phone is pefectly normal
currently trying this version:
[2.Jun.2012][MAGLDR/SD] NexusHD2-ICS-4.0.4-CM9-HWA-SD V2.2
Drain is between 60 and 130 mA while connected to eduroam. Good news is that it goes down to normal (5-7 mA) when I leave eduroam range and connect to WPA networks.
It seems to be related to eduroam connection but the latest ICS version at least reduces drain when eduroam is out of range.
I can confirm that being connected to eduroam really eats up your battery. Better than nothing I guess.
Hi there,
I am also using eduroam at the RUG but never experienced any problems.
Maybe try NexusHD2-ICS-4.0.4., works well for me.
Cheers
Is this issue fixed yet? I'm experiencing the same problem. At my home WIFI network I have no problems, but at two other WIFI networks my battery drains insanely fast. However, the security at home and at one of the other networks (were it drains my battery) are identical (WPA2, AES)...
Also see http://forum.xda-developers.com/showthread.php?p=30137863#post30137863.
My best guess is that the eduroam network constantly keeps asking your password, like it continuously keeps logging in while you are not even on your phone. And that would be perfect for security of course, but not for your battery.
Hi
Stock ROM, try to connect an ASUS laptop to the hotspot.
USB tethering works fine but charges the battery too high / drains the laptop battery.
I swear in the past it wasn't so sensitive but now I connect but seemingly as soon as I try to do anything on the connection, it dies.
Anybody else experiencing this sort of continual flakeyness?
Tried all the options I can think of:
- 2.4 v 5Ghz band flipping
- Disabling DNSfilter (though USB tethering works fine with it on)
- disabling power saving on the laptop WiFi adaptor
Possibly more changes I can't recall just now.
Would appreciate any constructive ideas, thanks for reading!