Develop Bugs

Voice+data = true?

Whilst making a call can you at the same time surf/mail?
Wanna know both with WiFi and 3G.
Thanks in advance

yes and yes.
only time you cant is when you're on 2G signal.

rhedgehog said:
yes and yes.
only time you cant is when you're on 2G signal.
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THANKS. This is a big thing for me

[Q] battery drain on gsm signal

hi all
recently i have just calibrate my battery.. and it works just fine
but now i found that it drains alot quicker using 3g signal compared to wifi...
the drain rate can take 10% /hour on 3g and only 4% / hour for wifi
why is that ?
is there something wrong on my gsm ?
btw am using leedroid froyo 2.0c and using latest radio 32.47.xxx
pls some one can tell me.. what to do ??any clues on this ?

3G has more power drain than wifi so it's normal.
Sent from my HTC Desire

elmalote said:
3G has more power drain than wifi so it's normal.
Sent from my HTC Desire
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oiya ? is it ?
coz on my iphone it was different... wifi was worse..
anyway.. is there anyway to slower battery drain ?

interqd said:
oiya ? is it ?
coz on my iphone it was different... wifi was worse..
anyway.. is there anyway to slower battery drain ?
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My 3G has always had higher power drain than WiFi. There isn't really anything you can do about it other than to turn it off. Alternatively you can disable "Always on Data" under Wireless & Networks => Mobile Networks

interqd said:
oiya ? is it ?
coz on my iphone it was different... wifi was worse..
anyway.. is there anyway to slower battery drain ?
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Click to collapse
Disable automatic sync. My data networks are switched off since last week. Now my battery lasts 2-3 days. I only use wifi at home.
You can also use juicedefender to control battery use and sync intervals.

interqd said:
hi all
recently i have just calibrate my battery.. and it works just fine
but now i found that it drains alot quicker using 3g signal compared to wifi...
the drain rate can take 10% /hour on 3g and only 4% / hour for wifi
why is that ?
is there something wrong on my gsm ?
btw am using leedroid froyo 2.0c and using latest radio 32.47.xxx
pls some one can tell me.. what to do ??any clues on this ?
Click to expand...
Click to collapse
This can also be caused by low/patchy 3G coverage in areas you are in.
If the 3G signal is weak then the handset will use a lot of power to try and keep the signal, as it prefers it over 2G.
If you don't mind the slower data speeds, switch to 2G/GSM Only as this does not use as much power (due to 3G cell breathing - Google it )

r2b2 said:
If the 3G signal is weak then the handset will use a lot of power to try and keep the signal, as it prefers it over 2G.
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One way to alleviate *some* of that is to set the phone to "GSM Auto (PRL)".
Go to dialer and dial "*#*#INFO#*#*". That should take you to the settings screen.

r2b2 said:
This can also be caused by low/patchy 3G coverage in areas you are in.
If the 3G signal is weak then the handset will use a lot of power to try and keep the signal, as it prefers it over 2G.
If you don't mind the slower data speeds, switch to 2G/GSM Only as this does not use as much power (due to 3G cell breathing - Google it )
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Click to collapse
Definitely true. Your cell will consume much more power when you are outside of coverage area. The antena will keep searching the network according to your preference. So if you have 3G active all the time the phones internal antenna will keep looking for it and will drain your battery quicker.

okey..
thx all 4 d answers...
goo that to know there's nothing wrong with my signal or battery..
i think my problem is bad signal coverage.. as i always be in the shop which is so inside ....
but cant make it to edge/gsm as 2g speed is awful here in indonesia...
i think i'll just use juicedefender
thx..

[Q]Which is better for battery? 2g/3g auto or only 2g?

As you may know desire has a built in feature that monitors when you do need 3g connection and when not, so when you do not need it it automaticly switches to 2g. I have also read somewhere that this feature consumes less battery then being always on 2g. Is that true? I still heard a lot of people that are most of the time on 2g while they do not browse the internet, reporting decent battery lives.
So, as the title says, which is better?

2g uses less battery than 3g. Use 2g when not using data for the best battery life.
Whoever said that 2g and sometimes 3g uses less battery that 2g only needs to go back to school, its mathematically impossible if 3g uses more battery.
Sent from my HTC Desire using XDA App

lvnatic said:
As you may know desire has a built in feature that monitors when you do need 3g connection and when not, so when you do not need it it automaticly switches to 2g.
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are you completely sure about that? my phone seems to be always in 3G as long as it is available and switchs to 2G if it cant get a 3g connection.
anyway, 2G is the best option battery wise.

there is a video from google i/o 2k9 talking about this. I think it's this one : http://developer.android.com/videos/index.html#v=OUemfrKe65c

I have used both modes for some weeks, but i didn't see any difference.

http://forum.xda-developers.com/showthread.php?t=688492
How about this? Does it apply to desire as well? I am curently using gsm only when im not browsing the net.

2g only will use the least battery.
Auto is great but the issue is that it will preferentially seek 3g. To seek 3g more power is required. (Now this is a negligible amount on its own). However if comparing the battery use in only a 2g area the 2g phone will last longer.
Sent from my HTC Desire using Tapatalk

if you have signal i recommend to use 3g. the cells needs more power to have/transmitt fast data connections like hdspa and in that case the cellphone need less battery to connect to it. in Romania the network it's kinda new hardware, because we use cellphones later than anyone else and the tech was envolved when we first install the network, but remember if your cellphone go from 2g to 3g often, this will consume a lot of power.

Robert A said:
if you have signal i recommend to use 3g. the cells needs more power to have/transmitt fast data connections like hdspa and in that case the cellphone need less battery to connect to it. in Romania the network it's kinda new hardware, because we use cellphones later than anyone else and the tech was envolved when we first install the network, but remember if your cellphone go from 2g to 3g often, this will consume a lot of power.
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Click to collapse
So you recommend wcdma only? Even when I don't use the internet? Its true that I have signal most of the time, but I am on "gsm only" all the time, switching to wcdma only when I browse the net.

I would recommend GSM auto (PRL) from the testing menu ( *#*#4636#*#* ) then in phone information. Your phone will still use 3G but only when the signal is strong. Otherwise it will prefer 2G.
WCDMA preferred will try to force 3G even when the signal is weak. Consuming more battery.
Sent from my Desire HD using XDA App

2G only uses the least power.
3G only uses moar power.
Constant switching uses the most, it peaks at 600mA battery drain in the process.
3G only will only give you signal outages, therefore I would not recommend it. It is not widespread as GSM signal is.

Oh I finally know how to acces PRL options, thanks. But regarding this, I found this thread on the nexus one section, which says wcdma prl is better. Any of you know how accurate that is?
Edit:
sheek360 said:
He mentioned that gsm auto prl will save the user a bit more power because it wont force the phone to continuasly hunt for a stronger signal. Typically this option gives our n1's a weaker signal and slower data speed. But he said it depends on our network in our city.
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Nvm, it wasn't battery related anyway. And I found what I needed. Thanks a lot.

Im back to gsm only, gsm auto prl didn't seem to be better in terms of battery saving.

Lte/cdma??

Quick question I'm in AZ and we don't have 4g and my phone is set under network mode to lte/cdma. Does this setting consume more battery cause its searching for 4g?? Or should I just switch to cdma only??

ImEVO said:
Quick question I'm in AZ and we don't have 4g and my phone is set under network mode to lte/cdma. Does this setting consume more battery cause its searching for 4g?? Or should I just switch to cdma only??
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Just switch it, if you don't have 4G then there's no point in having it on anyway. I think it will consume little bit more battery because it's searching. I'm in NM and don't expect 4G at all this or later next year, never got wimax in the first place.

ImEVO said:
Quick question I'm in AZ and we don't have 4g and my phone is set under network mode to lte/cdma. Does this setting consume more battery cause its searching for 4g?? Or should I just switch to cdma only??
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Click to collapse
it does consume battery but its not like an outrageous amount. Your most likely not even likely to notice it but just do your self a favor and turn it off anyways

Got rid of LTE on Note 2 ATT...:)

i use Menu Code *#197328640# to get rid of LTE on my Note 2. The option to switch to 4g only came on version 4.1.1. now its permanently off from the phone... no matter how many time i restore my phone.. :laugh::laugh::laugh:

babbar559 said:
i use Menu Code *#197328640# to get rid of LTE on my Note 2. The option to switch to 4g only came on version 4.1.1. now its permanently off from the phone... no matter how many time i restore my phone.. :laugh::laugh::laugh:
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And why would someone want that?

Steve.99 said:
And why would someone want that?
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Yeah, what he said? Is this a battery saver thing or something?

Steve.99 said:
And why would someone want that?
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its for those who think it keeps eating ur battery... im just sharing cuz if anyone wants to get rid of it then they can try... u can get it back i knw but i havent tried it..!!!

babbar559 said:
its for those who think it keeps eating ur battery... im just sharing cuz if anyone wants to get rid of it then they can try... u can get it back i knw but i havent tried it..!!!
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I think some people are too obsessed with this notion of battery life. Sure, LTE might degrade it a little, but is it really worth disabling completely? I'm sure I wouldn't, I want the full features of a phone, whether that is data speeds or other features. Unless you don't have a LTE plan, then I understand completely.

babbar559 said:
its for those who think it keeps eating ur battery... im just sharing cuz if anyone wants to get rid of it then they can try... u can get it back i knw but i havent tried it..!!!
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I think that's backwards move there! Because I love my LTE speeds I get, almost faster than some WiFi at home!!
If you don't want lte speeds, then don't get a LTE PHONE!
And another thing if your really concerned about battery life then purchase a extended battery! They start out at 6200 mAh, 6500, 7600, 9300. Don't think they'll have to worry about battery life with one of those!:thumbup:
And tons of external back up batteries also. I have a16,000 mAh backup battery
Just my 2¢®
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4 Beta

Bajanman said:
I think that's backwards move there! Because I love my LTE speeds I get, almost faster than some WiFi at home!!
If you don't want lte speeds, then don't get a LTE PHONE!
And another thing if your really concerned about battery life then purchase a extended battery! They start out at 6200 mAh, 6500, 7600, 9300. Don't think they'll have to worry about battery life with one of those!:thumbup:
And tons of external back up batteries also. I have a16,000 mAh backup battery
Just my 2¢®
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4 Beta
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Click to collapse
i just tried the options n it worked...just sharing cuz if anybody needs it then they can try... im not saying u guys should do it too..peace...

babbar559 said:
i just tried the options n it worked...just sharing cuz if anybody needs it then they can try... im not saying u guys should do it too..peace...
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Click to collapse
Just so you know, messing around in that menu can also stop your SIM card from working! Phone nit getting no signal, not connecting to network! If you end up hitting the wrong buttons! Fyi
Just my 2¢®
Sent from my SAMSUNG-SGH-I317 using Tapatalk 4 Beta

*#2263#
I disabled lte as well, since hspa+ is plenty fast around here I just select wcdma all.
Automatic can drain battery if you're in between two towers, like I am.

Isn't there a option in settings > mobile networks that you can choose to do it very fast?

johntortorella said:
Isn't there a option in settings > mobile networks that you can choose to do it very fast?
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At&t based roms don't have it..
Jedi for example.

crixley said:
*#2263#
I disabled lte as well, since hspa+ is plenty fast around here I just select wcdma all.
Automatic can drain battery if you're in between two towers, like I am.
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Ya, I have the menu option in <mobile networks>. I turn off lte if I'm in an area where it keeps jumping between lte & hspa and it can save me 15-20% battery over an 8 hour work day.
Sent from my SGH-I317M using xda premium

Is there a way to permanently disable Edge? That would prove more useful for me.
Often time, there is a "4G" signal nearby but for 10 seconds I switch between Edge and HSPA I loose data connectivity.

inspron said:
Is there a way to permanently disable Edge? That would prove more useful for me.
Often time, there is a "4G" signal nearby but for 10 seconds I switch between Edge and HSPA I loose data connectivity.
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*#2263#
Choose lte all or hspa all

crixley said:
*#2263#
Choose lte all or hspa all
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As noted before, this will not work if you are on AT&T as it is RAT restricted.
Sent from the Millennium Falcon somewhere on the Kessel Run

Well...
I live in a town where i get only 4G. Maybe i should Disable LTE? Or am I Missing something?

Mad383Max said:
As noted before, this will not work if you are on AT&T as it is RAT restricted.
Sent from the Millennium Falcon somewhere on the Kessel Run
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it will work if u take out the sim first n then try the code...:good: