Develop Bugs

How to limit HSDPA ramping

Hi all. I was wondering whether anyone had any tricks to stop the PDA from using HSDPA unnecessarily. I find if I'm logged onto MSN all day, with just UTMS the battery would last probably 12 hours or so, but if I enable HSDPA it would clean out the battery in less than 5 hours.
MSN can't possibly require that much bandwidth. Is it possible to limit the phone from changing to HSDPA unless the bandwidth is actually required (i.e. when I connect my laptop to if for internet)
I use a dopod d810 in Australia with optus.
Thanks.

viperx said:
Hi all. I was wondering whether anyone had any tricks to stop the PDA from using HSDPA unnecessarily. I find if I'm logged onto MSN all day, with just UTMS the battery would last probably 12 hours or so, but if I enable HSDPA it would clean out the battery in less than 5 hours.
MSN can't possibly require that much bandwidth. Is it possible to limit the phone from changing to HSDPA unless the bandwidth is actually required (i.e. when I connect my laptop to if for internet)
I use a dopod d810 in Australia with optus.
Thanks.
Click to expand...
Click to collapse
If you don't need 3G, switch the phone to GSM, which would use EDGE/GPRS, or use tools such as bandswitch etc. If you want to completely stopped data connecting by itself, try nodata.

viperx said:
Hi all. I was wondering whether anyone had any tricks to stop the PDA from using HSDPA unnecessarily. I find if I'm logged onto MSN all day, with just UTMS the battery would last probably 12 hours or so, but if I enable HSDPA it would clean out the battery in less than 5 hours.
MSN can't possibly require that much bandwidth. Is it possible to limit the phone from changing to HSDPA unless the bandwidth is actually required (i.e. when I connect my laptop to if for internet)
I use a dopod d810 in Australia with optus.
Thanks.
Click to expand...
Click to collapse
Also, with some service provider, if the phone is connected to HSDPA, my incoming calls get sent to voicemail. If it is in normal 3G mode the call comes through. This has been a problem in many areas. As the last poster pointed out, Bandswitch can disable HSDPA so that 3G is the default mode. Since I don't have an unlimited data plan, I just change the band to GSM and use Edge unless I have to download big web pages or use the Video phone, then I switch to WCDMA mode.

Problem is, I use WCDMA all the time. I connect my laptop to the internet through my PDA. At these times the HSDPA is greatly valued. However, when I'm not and just want MSN messenger on my PDA, well, its a great battery drainer for no good reason.
At the moment I'm getting around this by turning HSDPA back on when I use the laptop and then off again when I don't so it just uses UTMS. However this is pretty annoying having to reset it every time.
Does bandswitching between GPRS and HSDPA require reset?

My carrier - 'MY MAXIS' is somewhat smart. They usually kick you out of HSDPA Network whenever you are not consuming large amount of bandwidth. The phone automatically switches to 3G , but then you are still connected. Then it will switch back to HSDPA whenever there is a sudden burst of data or so. Smart way of conserving HSDPA slots.
I don't think you can limit HSDPA bandwidth or so. Once its connected , its connected. It has nothing got to do with battery. Its just the power consumption. You have no choice but to disable the HSDPA module , so that it does not drain the battery a lot. Limiting bandwidth does not work. HSDPA/UMTS drains a lot of power.

Mine does that too... drop down from HSDPA to UTMS. But the difference between having HSDPA enabled and disabled in terms of battery life is like a third.

Its because if you enable it. It connects to HSDPA , hence it uses up more battery power. HSDPA loves to drain your battery life. This is why , you should switch to EDGE/GPRS whenever you are in mobile and switch it back to 3G whenever you wish to use it as a modem. You dont have any other choices ,mate !

Edge / 3G+ battery consumption

Hi
Do you know if the 2G mode makes the DHD have a smaller battery consumption than 3G+ mode while the device is in standby mode (screen OFF) ?
Thanks
Nico

Obviously 2G will consume lesser battery than 3G.
But the difference will be very less while in standby mode because you are not utilizing the network in anyway. But if you intend to use (calls internet etc) the difference will be far larger.

HellRa1SeR said:
Obviously 2G will consume lesser battery than 3G.
But the difference will be very less while in standby mode because you are not utilizing the network in anyway. But if you intend to use (calls internet etc) the difference will be far larger.
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Click to collapse
and what about the "2g/3g automatic switch mode" ?
Thanks
Nico

no difference if ur just making calls and texting ,,,

If in your place isn't that much covered with 3g and you don't have flat 3g net, i would choose 2g, or even better .
GSM ( auto PRL ) mode is the best for battery ( *#*#4636#*#* > phone info )

If you're not using the 3G internet then I'd suggest you keep your network to 2G. Consumes less power while making calls. I've experienced measurable battery power gains while being on 2G only.
3G preferred or 2G/3G auto switching consumes even more power I think as it tries to switch between the two from time to time.

3G only instead of HSDPA? is there a way?

is there a way to only allow UMTS on my Xperia Arc instead of HSDPA(WDCMA only in settings)? as UMTS is > 384kbit/s and HSDPA up to 7,2Mbit/s and HSDPA is draining my battery down to its limit and my phone's gettin hot.. sometimes I see a 3G symbol in the notif. bar but my connection then doesn't work.. I called the o2 service center and they told me that it's possible to get UMTS in my location.. really gettin on my nerves..-.-
thanks !

I doubt that's what's draining your battery. I know for sure some operators support FastDormancy which kicks the phone back down to 3G from HSPA when data isn't being used. Rogers in Canada does it. AT&T in the US does not support it though so my phone always sits on HSPA unless it's a really ghetto old tower.
You might want to see if modifying some of the flags in build.prop will disable HSPA (I know you can set EDGE class type for instance). You will just need root and a text editor and reboot after any modification.

and how to set umts only mate?

UMTS drains as much as HSDPA I guess or there isn't abig difference, at least for me.
I don't know how to get UMTS only...
Sent from my iPad 2 using Tapatalk

so there's no way?! because while browsing over HSDPA network my phone will drain like 10% battery in just 10 minutes and thats inacceptable for me! over 3g on 2.3.3 where i had found a way to disable hsdpa it drained like 3/4% in 10 minutes..

realfelix said:
so there's no way?! because while browsing over HSDPA network my phone will drain like 10% battery in just 10 minutes and thats inacceptable for me! over 3g on 2.3.3 where i had found a way to disable hsdpa it drained like 3/4% in 10 minutes..
Click to expand...
Click to collapse
Again that is *NOT* normal drain. Check your baseband version, I use -58 and hardly have any drain on HSPA or 3G (it's about the same), use EDGE if you want to save battery. (use latest flashtool to flash different baseband versions)
You're looking to modify build.prop or find some program that modifies it for you, you must have root to do this. I don't know the exact option in build.prop, but that's all I can help you with.

i have -58 baseband .. what's your battery life then when browsing like 10-15 mins?

Does WIFI use power if its not connected?

I See my wifi has used 30% of my battery but ive been on 3G all day, does it drain the battery searching for networks?

It does use some power when searching for networks. There is probably an APP or settings that you can change to set the Freq of checks maybe. Or you can just turn of the Wifi radio when you know your not going to use it.

DroidHam said:
I See my wifi has used 30% of my battery but ive been on 3G all day, does it drain the battery searching for networks?
Click to expand...
Click to collapse
Yes it uses a lot of power if its regularly searching for networks. Especially if you're moving around and seeing dozens of WiFi spots. Just turn off WiFi when not in use, simple as that.

A lot of custom ROMs have less aggressive Wifi seeking intervals. You can usually set it manually with ease too. Lots of apps out there if you don't want to do it manually.

All that was said is true, but still I find that 30% usage for Wifi just for searching nearby networks is a little too much...
Although I haven't got anything to compare with, I always turn wifi off if I'm not using it during long periods.
Regards

I turn wifi off when it is not needed and battery life goes from one to two days.
Sent from my Galaxy Nexus using XDA App

I've been using Tasker to turn wifi on at home/work and off when I'm elsewhere. It's using cell towers to determine location, so hopefully it won't impact the battery much.

I leave wifi on 24/7, today it has used 2% of the 60% battery i've used.
I travel through london so I assume it is constantly finding new wifi signals.
Sent from Mobile..

Y5 Battery Saver .. on the market, free. Turns on/off Wifi based on known networks and cells in the area of the AP.

str355 said:
I leave wifi on 24/7, today it has used 2% of the 60% battery i've used.
I travel through london so I assume it is constantly finding new wifi signals.
Sent from Mobile..
Click to expand...
Click to collapse
I leave wifi on all the time as well, and I also only have used 2% of the 70-80% battery I used up already.
Try going into wifi settings, then advanced wifi settings, then turn off the new wifi network available notification option.
This increased my battery life slightly.
Sent from my Galaxy Nexus using XDA App

Y5 - Battery Saver helps out tremendously! I barely ever use more than 2% when home all day...although that may be a bug but I started a thread for that already.

eddie_gordo said:
All that was said is true, but still I find that 30% usage for Wifi just for searching nearby networks is a little too much...
Regards
Click to expand...
Click to collapse
That 30% displayed can be deceptive since it's based on the amount of battery discharged and not entire battery capacity.

Well wifi, when on is looking to connect to known networks. If the signal is weak it will disconnect and connect to another network near by if there is that has better signal. This process does use some battery. The biggest drain will occur when you are actively using wifi, that is when you download or upload. So the best way to save battery, is to close wifi when not needed. If however you want wifi you can set it to never sleep. This way even if the screen goes off wifi will be connected and your device wont use the 3G which is way more power hungry.

[Q] How to totally disable Cellular network ?

I have N7 LTE 4G and most of the time I use it with Wi-Fi only. Yesterday I decided to get a pre-paid Sim to use for Data only when I am in a place that doesn't have Wi-Fi with 1GB per month data for $2.90 (yes it is THAT cheap in Egypt ) but only 3G/HSDPA/HSPA+
Now the problem is, Cellular network is always running and battery drains fast even though I use the internet on Wi-Fi and turned Mobile Data off.
I've read that I can turn on 2G to save battery and disable the cellular signal and indeed when I check 2G, I get no bars in cellular top icon and it says No Service (Network Name) BUT..... as soon as I open internet browser or any internet app, the cellular network works again by itself although 2G is still checked !!
Is this some kind of bug ?
The only solution I can do is to turn on Airplane Mode and turn Wi-Fi on afterwards which is not ideal
Any help would be much appreciated.

There is an app called Battery Monitor Widget that has "Tests" tab when I press on it, it opens "Testing" page in which the first option is Tablet Info. There is a list called "GSM Only" in which there is a toggle to Turn Off Radio and indeed it turns it off

I use airplane mode then just turn wifi back on to keep the cellular radio off.
Sent from my Nexus 7 using XDA Premium HD app

Que_Ball said:
I use airplane mode then just turn wifi back on to keep the cellular radio off.
Sent from my Nexus 7 using XDA Premium HD app
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How much battery does this save ?

r9800pro said:
How much battery does this save ?
Click to expand...
Click to collapse
It really depends on your signal strength. If you have strong signal you shouldn't see a huge difference. If you have a weak signal then it could be a big boost to your battery life.
And I'm not sure why you said that it was "not ideal" in your initial post. That's really the best way to go about it.

raptir said:
It really depends on your signal strength. If you have strong signal you shouldn't see a huge difference. If you have a weak signal then it could be a big boost to your battery life.
And I'm not sure why you said that it was "not ideal" in your initial post. That's really the best way to go about it.
Click to expand...
Click to collapse
Signal is always good but I don't even need it to be there when I am on Wi-Fi as the tablet has no GSM phone functionality.
I think there is something wrong elsewhere with the battery draining so fast other than the GSM Radio being On.
The battery was good and lasted 2 full days with moderate usage and Wi-Fi always On but it started draining fast when I left the tablet untill it totally discharged and woke up to find it powered off and then charged it till 100% and battery reached 55% in 10 hours with very light usage

It sounds like you have an app draining your battery in the background. Try installing Better Battery Stats and see what's using all your power.

raptir said:
It sounds like you have an app draining your battery in the background. Try installing Better Battery Stats and see what's using all your power.
Click to expand...
Click to collapse
Is that the $2.76 app from Play store ?

r9800pro said:
Is that the $2.76 app from Play store ?
Click to expand...
Click to collapse
Yes, the developer also posts it here on XDA.
http://forum.xda-developers.com/showthread.php?t=1179809