As we all know, Galaxy S has major issues with the battery life, one of the biggest hogs being the HSDPA data connection. From my experience, HSDPA drains 5-10% per hour in standby on my Galaxy S, while the WiFi connection drains almost nothing during a 3 hours standby. So I was wondering why doesn't Samsung thought of replacing the HSDPA with 3G or even 2G (GPRS/EDGE) while the display is off? HSDPA should be active only when the connection is used by the user and not the background services like gmail sync. Push mail notifications work with slow connections like GPRS so why not give the battery a rest? Do I have a point and if I do, is there a solution?
on my phone HSPA is only on when I use data. It switches to UMTS (3G) when idle. My provider doesn't have any legacy GSM/EDGE network.
Yeah it would have to be a bit more configured than that, with screen off and data idle - for example I stream internet radio and constantly have the screen off, with 3G only speed there wouldn't be enough overhead for it to stream consistently.
Just turn data network mode off on the power menu? Puts the phone to 2g for voice and text....
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Install superpower or juicedefender
Elvis is alive and working at Apple
zorxd said:
on my phone HSPA is only on when I use data. It switches to UMTS (3G) when idle. My provider doesn't have any legacy GSM/EDGE network.
Click to expand...
Click to collapse
Mine doesn't work this way. After leaving the phone idle for at least 30 min, when I turn it on, the H is already active. I dont think it switches so fast from 3G to HSDPA. I'll monitor it for a couple of days to see if it falls back to 3G in sleep mode.
Turning the data connection off isn't a solution, at least for me. I want the background sync to work, but not on high speed, because it drains the battery faster.
That's a nice idea indeed. Practically, however, I have 2g all the time and a widget to enable 3g/h when required for browsing etc.
Thats a really good idea. I have tried looking for a widget that switches 2g 3g but can only find widgets that provide a shortcut. Maybe some day...
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Related
Has anyone experienced the drain on the battery with 3g, as my Battery does not last a night when using 3g, but I was in the 3g free zone (gsm only) during the weekend and the battery lasted the whole weekend.
My battery will drain 50% quicker when in a 3G area, Somtimes I set the device to use standard GSM frequencies to keep the battery alive.
I'd guess it is the switching that causes the battery drain (at least this is the case with most 3G phones ) if you spend a lot of time (i.e. your workplace or home) on a "borderline" area your battery will get sapped pretty quickly
Setting the phone to use one band and stick to it (practically , this has to be GSM / 2g for a constant signal ) is the best soloution , until such time as blanket 3G coverage
Pain in the neck really
shark1 said:
Has anyone experienced the drain on the battery with 3g, as my Battery does not last a night when using 3g, but I was in the 3g free zone (gsm only) during the weekend and the battery lasted the whole weekend.
Click to expand...
Click to collapse
same with me, i need to plug in the charger every ~40 hours. i live i 3G area, also using web'n'walk often...
I get way less than this. I have push email enabled, which keeps the internet connected constantly. However in my house I only get one-bar of 3g - often flipping to full four-bar GPRS
I only get about 24 hours between charges!
I have got serious 3G battery draining problems too.
How do I set up the TyTN to only use 2G ??
Thanks,
Martin
- Tap the phone icon on the top menu bar;
- Select settings;
- Select band;
- For select your network type: select GSM
- For select your GSM/UMTS band: select Auto
This setting works great for me on Cingular on an old AT&T SIM in and around Washington, DC. THe battery life is also very good. Also remember as posted on another thread in this forum that even if you do not have 3G yet in your area, if you get EDGE, you will see faster speeds on the TyTN. The TyTN has a new feature called Extended TBF Release which improves the overall throuput.
This morning my phone stopped working. Screen went off, couldn't wake it up and couldn't charge it. None of the buttons did anything. I decided to try a soft reset as a last resort and it's working again now. HAs anyone else had this issue, and is it something that occurs a lot? I'm not happy about this
Morning,
Search is your friend. Look on here for a thread started by Beards. Has all the info and solutions you need for this.
Use this to search as XDA search is a bit hit and miss..http://www.google.com/advanced_search?q=+site:http://forum.xda-developers.com&hl=en&lr=&as_qdr=all
WB
wacky.banana said:
Morning,
Search is your friend. Look on here for a thread started by Beards. Has all the info and solutions you need for this.
Use this to search as XDA search is a bit hit and miss..http://www.google.com/advanced_search?q=+site:http://forum.xda-developers.com&hl=en&lr=&as_qdr=all
WB
Click to expand...
Click to collapse
I can't find anything on XDA search to be honest. I tried that link you sent, but I can't find it on that either, any hints as to what keywords I should be using?
I also tried searching by members list, and finding all posts by beards, but I just get this long list, any idea which one he/she is?
http://forum.xda-developers.com/memberlist.php?&order=asc&sort=username&ausername=beard
try searching the site for standy screen of death.
Its a problem that has afflicted many HTC devices and seems somehow related to the phone moving between 2G and 3G in areas of poor 3G signal
rumpleforeskin said:
try searching the site for standy screen of death.
Its a problem that has afflicted many HTC devices and seems somehow related to the phone moving between 2G and 3G in areas of poor 3G signal
Click to expand...
Click to collapse
Thanks for that hint, found lots of info on it now. This is going to show how really clueless I am, but apart from 3G being a lot faster I'm not sure what the difference is between 2G and 3G. Also, is the 2G and 3G just related to data usage/transfer, or is it calls as well?
If it's just data transfer then I may as well set it to 3G only as I'm too impatient to wait for the internet etc on 2G. If it responsible for the connection of calls as well I'm going to have to leave it on both as I quite frequently go from3G to 2G areas, and I don't want to keep losing signal for my phone.
Snerkler,
Take a look at this thread...http://forum.xda-developers.com/showthread.php?t=596484
WB
> If it's just data transfer then I may as well set it to 3G only as I'm too impatient to wait for the internet etc on 2G. If it responsible for the connection of calls as well I'm going to have to leave it on both as I quite frequently go from3G to 2G areas, and I don't want to keep losing signal for my phone.
GSM (2G) handles all the voice traffic and SMS in UK, plus basic GPRS speed at up to 56Kbps. Where available it also includes (E)dge connections for data up to about 100Kbps (technically can go much higher, but this is the practical limit)
3G and HSDPA (Also termed UMTS and WCDMA) are data only and can allow 330Kbps and up to 7.2Mbps respectively though you'll generally see around 200Kbps and 1-1.5Mbps as usable maxima. These protocols are also used for video calling and MMS media content. However if a device is set for WCDMA only, it can still make/receive voice and SMS services.
If all you do is use email, voice, SMS and basic web page browsing, there is an advantage in constraining the connection to GSM only, as the battery life will improve by up to 25%. For occasional higher volume web browsing it may still be worth staying on GSM, but switching to Auto or WCDMA when needed.
For frequent web use, then it's best to stay on Auto and take the battery hit. Don't select WCDMA only- the 3G service in UK is still patchy and if you go out of a 3G area, you;ll get no signal at all with this selection.
You may also see a few posts on here relating to auto-disconnecting the data signal after a timeout. In general this is not a good idea with current 'connected' devices as it prevents all the 'push' updating of email, Facebook etc. The programs to allow this were originally produced to prevent unwanted data charges when data was expensive, or when roaming. A lot of users are now utilising this in an effort to improve battery life- this is a little futile as the data connection itself uses the normal phone signal service channels and therefore negligible battery power, unless the 3G service is switched off at the same time.
wacky.banana said:
Snerkler,
Take a look at this thread...http://forum.xda-developers.com/showthread.php?t=596484
WB
Click to expand...
Click to collapse
Cheers for this, read through to page 8 so far, will read the rest later. WHy can't I find the threads I want when I search?
I may as well just PM you everytime WB lol
NeilM said:
> If it's just data transfer then I may as well set it to 3G only as I'm too impatient to wait for the internet etc on 2G. If it responsible for the connection of calls as well I'm going to have to leave it on both as I quite frequently go from3G to 2G areas, and I don't want to keep losing signal for my phone.
GSM (2G) handles all the voice traffic and SMS in UK, plus basic GPRS speed at up to 56Kbps. Where available it also includes (E)dge connections for data up to about 100Kbps (technically can go much higher, but this is the practical limit)
3G and HSDPA (Also termed UMTS and WCDMA) are data only and can allow 330Kbps and up to 7.2Mbps respectively though you'll generally see around 200Kbps and 1-1.5Mbps as usable maxima. These protocols are also used for video calling and MMS media content. However if a device is set for WCDMA only, it can still make/receive voice and SMS services.
If all you do is use email, voice, SMS and basic web page browsing, there is an advantage in constraining the connection to GSM only, as the battery life will improve by up to 25%. For occasional higher volume web browsing it may still be worth staying on GSM, but switching to Auto or WCDMA when needed.
For frequent web use, then it's best to stay on Auto and take the battery hit. Don't select WCDMA only- the 3G service in UK is still patchy and if you go out of a 3G area, you;ll get no signal at all with this selection.
You may also see a few posts on here relating to auto-disconnecting the data signal after a timeout. In general this is not a good idea with current 'connected' devices as it prevents all the 'push' updating of email, Facebook etc. The programs to allow this were originally produced to prevent unwanted data charges when data was expensive, or when roaming. A lot of users are now utilising this in an effort to improve battery life- this is a little futile as the data connection itself uses the normal phone signal service channels and therefore negligible battery power, unless the 3G service is switched off at the same time.
Click to expand...
Click to collapse
I fI'm reading this right, you need 2G to make and receive calls, therefore if you select 3G only then you can't make and receive calls?
snerkler said:
I fI'm reading this right, you need 2G to make and receive calls, therefore if you select 3G only then you can't make and receive calls?
Click to expand...
Click to collapse
No- if you select 3G only you can make/receive calls and exchange fast data- but only if you are in a 3G coverage area. Out of 3G coverage and there's nothing
GSM only: Voice, SMS, Data wherever theres a signal. Good battery life. Slow data
3G only: Voice, SMS, fast Data, but nothing at all out of 3G coverage. Higher battery drain
Auto: Switches between the 2 above, but favours 3G where available so again, higher battery drain especially in marginal 3G signals where it will continually switch between protocols, potentially using a lot of battery power.
NeilM said:
No- if you select 3G only you can make/receive calls and exchange fast data- but only if you are in a 3G coverage area. Out of 3G coverage and there's nothing
GSM only: Voice, SMS, Data wherever theres a signal. Good battery life. Slow data
3G only: Voice, SMS, fast Data, but nothing at all out of 3G coverage. Higher battery drain
Auto: Switches between the 2 above, but favours 3G where available so again, higher battery drain especially in marginal 3G signals where it will continually switch between protocols, potentially using a lot of battery power.
Click to expand...
Click to collapse
Ok, thanks for clearing this up. If I want to improve battery life, am I best to have it set to 2G, unless I want to use internet/email, and if I want to do that then swap it to 3G for this (assuming I don't want push mail)?
Also, most of the time I'm hooked up to wifi, so I'm assuming in this case I don't need 3G at all?
snerkler said:
Ok, thanks for clearing this up. If I want to improve battery life, am I best to have it set to 2G, unless I want to use internet/email, and if I want to do that then swap it to 3G for this (assuming I don't want push mail)?
Also, most of the time I'm hooked up to wifi, so I'm assuming in this case I don't need 3G at all?
Click to expand...
Click to collapse
Even email (polled or push) is fine over 2G unless you are receiving large attachments.
When you are on WiFi, data should take that path so you are correct- 3G won't be needed.
If I enable 3g, my battery only can stay around half day. But when I only enable wifi, it was almost double the time.
Anybody know why?
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yes... same here 3g uses more data.. i find if i turn on wifi at night battery lasts longer.. and if you disable data totally it lasts even longer.
Yes, if disable all the internet connection. It can last 3 days for me.
Sent from my GT-I9000M using XDA App
That's normal and quite reasonable.
With 3g your phone has to transmit with much higher energy (since the antenae are potentially thousands of meters away). With WIFI it only has to transmit to 100-200 meters max.
Have my phone set for 2G with wifi always on.
Use wifi at home.
2G is enough for all normal syncs, and if I need more speed for anything else I temporarily switch to 3G for that.
This way a single charge last me well over 24h under normal usage. Don't even know exactly how much.
With the phone set to 3G, the same usage patern will eat a full charge in something like 8h.
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Is it possible to set to '2g only' in froyo?
So far I can only find the option to completely switch off data, but not choose the type of mobile data connection.
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Yes switching to '2g' only is easy, you can find it in wireless settings under mobile networks. It's the 'network mode' on there.
Myself I use 3G only because I listen Internet radio a lot in my car and of course 2G is not enough and if it's set to both 2G and 3G the connection breaks way too often. Of course I couldn't do that if there were areas that would not cover 3G.
Sent from my GT-I9000 using XDA App
allotrios said:
That's normal and quite reasonable.
With 3g your phone has to transmit with much higher energy (since the antenae are potentially thousands of meters away). With WIFI it only has to transmit to 100-200 meters max.
Click to expand...
Click to collapse
Here is the right answer, and the battery consumption can be quit high if you have poor 3g reception or u are just between edge/3g signal the phone consume much more power when it tried to find the best signal
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Fihlvein said:
Yes switching to '2g' only is easy, you can find it in wireless settings under mobile networks. It's the 'network mode' on there.
Click to expand...
Click to collapse
In Network mode, select GSM or WCDMA for 2g?
allotrios said:
That's normal and quite reasonable.
With 3g your phone has to transmit with much higher energy (since the antenae are potentially thousands of meters away). With WIFI it only has to transmit to 100-200 meters max.
Click to expand...
Click to collapse
Is that really true? When Idle, is the phone transmitting? Or only receiving?
Just go and install JuiceDefender, It turns off 3G when screen is off. Simple. To set to 2G only then choose GSM.
aditya104 said:
in network mode, select gsm or wcdma for 2g?
Click to expand...
Click to collapse
gsm = 2g
wcdma = 3g
I know this is one app we can try: http://forum.xda-developers.com/showthread.php?t=739530#
But it can't disable switching while do tethering. Can we have this flexible function that we can customize from Settings menu?
I noticed our SGSIII can switch off and on WIFI when the screen on and off. It's good if our SGSIII already have the function what I want and it good enough to now what we do when the screen off, it will not switch to 2G when we do tethering and downloading.
GS2 / note / s3
If network idle, it 's will auto down to 3G umts or HPDPA to keep the battery life.
1 hour with auto sync-> 1-1.5%
2g can save battery ?i think not so much with network online.
Sent from my GT-I9300 using xda premium
As I remember correctly AOKP has this feature under their powersaving settings. From what I can tell from my I9000 I always lost mobile data connection entirely when turning screen back on... took 10-60 seconds to get an active 3G data connection again. That kinda really pissed me off cuz it is very likely you need your internet connection when pulling the phone out and turning the screen on ... and in that case having no connection really sucks.
So I never used that option (besides using manual 2G limitation if wanted).
xos84292 said:
GS2 / note / s3
If network idle, it 's will auto down to 3G umts or HPDPA to keep the battery life.
1 hour with auto sync-> 1-1.5%
2g can save battery ?i think not so much with network online.
Click to expand...
Click to collapse
Thanks for the info. My home town just have 2G connection. I think it's better if it directly connected via 2G, rather than the phone continuously searching 3G line.
Dear friends, good afternoon
I hope you are doing well.
Does anybody knows how to manage 2g to 3g automatically?
I mean, is there any way to let 2g working when screen is off or when is in standby (not using an APP) and in the moment that you open an APP, the 3G connections starts automatically?
I had this idea few days ago. Would be AWESOME to save Data Plans and Battery. But I am not sure if it is possible.
I already use Greenify + NFC Task + Juice Defender ultimate (to turn on and off 3g) and my battery is during around 20 hours. However, I want to reach the edge of the device.
All the best for everyone.
Heitor Amat said:
Dear friends, good afternoon
I hope you are doing well.
Does anybody knows how to manage 2g to 3g automatically?
I mean, is there any way to let 2g working when screen is off or when is in standby (not using an APP) and in the moment that you open an APP, the 3G connections starts automatically?
I had this idea few days ago. Would be AWESOME to save Data Plans and Battery. But I am not sure if it is possible.
I already use Greenify + NFC Task + Juice Defender ultimate (to turn on and off 3g) and my battery is during around 20 hours. However, I want to reach the edge of the device.
All the best for everyone.
Click to expand...
Click to collapse
If you don't use LTE, then Llama (free app) can automatically switch you from 2g to 3g when your screen turns on and back again when it turns off.
if there is data flowing, 2g will end up using more battery. if the data is flowing, it is slower on 2g, therefore it takes longer to finish. if it takes longer to finish, itll end up using more battery. ive been using lte, and have had better battery life since. i see a minimum of 5 hours screen on time.
got it
simms22 said:
if there is data flowing, 2g will end up using more battery. if the data is flowing, it is slower on 2g, therefore it takes longer to finish. if it takes longer to finish, itll end up using more battery. ive been using lte, and have had better battery life since. i see a minimum of 5 hours screen on time.
Click to expand...
Click to collapse
So basically, use 2g to save battery is not a good option?
Demonic240 said:
If you don't use LTE, then Llama (free app) can automatically switch you from 2g to 3g when your screen turns on and back again when it turns off.
Click to expand...
Click to collapse
I do not use 4g here because Gnexus 4 is not compatible with 4g frequency in Brazil (2600 mhz)
Llama works a bit like smartactions from motorola right? (i will take the weekend to explore it better)
Does Llama work as a NFC tasker as well?
Hurr durr
http://android.stackexchange.com/questions/44628/2g-versus-3g-does-it-really-save-battery
Sent from my Nexus 4 using xda app-developers app
Heitor Amat said:
So basically, use 2g to save battery is not a good option?
Click to expand...
Click to collapse
right.
i used to believe, just like you, that 2g saves battery. so id use 2g instead of 3g, and the battery would go down quicker.
simms22 said:
right.
i used to believe, just like you, that 2g saves battery. so id use 2g instead of 3g, and the battery would go down quicker.
Click to expand...
Click to collapse
I'm using 2g when i'm not surfing or downloading anything(except whatsapp and hangouts), and when i'm going to surfing etc. i'm using 3g so i can save battery. But i have to do it manually, with quick toggles this is not that hard. :good:
simms22 said:
right.
i used to believe, just like you, that 2g saves battery. so id use 2g instead of 3g, and the battery would go down quicker.
Click to expand...
Click to collapse
2g saves battery when you're connected to Wi-Fi.
Sent from my Nexus 4 using xda app-developers app
---------- Post added at 05:08 PM ---------- Previous post was at 05:05 PM ----------
Heitor Amat said:
I do not use 4g here because Gnexus 4 is not compatible with 4g frequency in Brazil (2600 mhz)
Llama works a bit like smartactions from motorola right? (i will take the weekend to explore it better)
Does Llama work as a NFC tasker as well?
Click to expand...
Click to collapse
I don't know what smartactions is, but you set conditions and actions fire off when the condition is met. NFC would require the secure settings plugin (app from store) and needs root.
As an example, when I connect to Wi-Fi, my phone switches to 2g and my pattern lock is disabled. When I disconnect from Wi-Fi, my pattern lock is re engaged and my network mode switches back to 3g.
Sent from my Nexus 4 using xda app-developers app
Demonic240 said:
2g saves battery when you're connected to Wi-Fi.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
its not that it saves battery, its that you are using wifi as a data connection. as soon as data will start flowing through the 2g connection, battery drains faster. its the same principle as using a 3g or lte connection over a 2g connection. heck, you can save the same amount of battery using wifi and shutting off mobile data completely.
simms22 said:
its not that it saves battery, its that you are using wifi as a data connection. as soon as data will start flowing through the 2g connection, battery drains faster. its the same principle as using a 3g or lte connection over a 2g connection. heck, you can save the same amount of battery using wifi and shutting off mobile data completely.
Click to expand...
Click to collapse
I think we're agreeing to the same thing
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