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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.
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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.
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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
As the title says, I'm not getting HSDPA in areas where I was getting it before with my Galaxy S. I only ever get 3G and it is driving me nuts!
Is there anyway to change it to allow HSDPA on the phone? It is noticably slower, particularly streaming videos.
I'm on T-Mobile UK with the web & walk+ tariff.
Are you running the stock rom?
If so - afaik you get 3G for both 3G and HSDPA. Check your connection type in "About Phone" in settings - should be under "status".
Highland3r is correct. HSDPA is a 3G technology, and the stock ROM on the Nexus S does not differentiate it in the connection type display. You are most likely connected to your provider's HSPA network, your phone simply doesn't advertise that fact.
T mobile UK, uses a different band
it uses the same frequency as the 3G from ATT in USA
Nexus S is an AWS band phone
I'm having a similar issue with my Nexus S on Orange UK. I have to manually force it to use HSDPA in the engineer's menu but after a certain amount of time it defaults to UMTS.
My brother-in-law's Galaxy S has a constant HSDPA connection.
Sent from my Nexus S using XDA App
I'm on vodafone in the uk and I get HSPA mostly all of the time, u guys are right, it says 3g in the bar at the top of the screen but looking deeper it is in actual fact HSPA.
Sent from my Nexus S using XDA App
it's been like this since Android 2.3. They only display 3G whether your using 3G or HSDPA... they are essentially the same.
Therefore they just show 3G...
I prefer it to show me 3G or H or UMTS ( sometimes on UMTS aswell and still shows as 3G )
I am currently on CM7 and it does display H most of the time as the coverage is pretty good where I am. This has been the case even before I rooted the phone.
Thanks for the info guys, like Highlan3r suggested it has HSDPA in the status menu but 3G in the notification bar! It is the stock ROM also, just found it a bit unusual since changing from the Galaxy S only a week ago but now I know.
Thanks again!
Just to clarify, my Nexus S shows UMTS under status, even when a data connection is active. If I force it onto HSDPA by selecting WCDMA only in the engineer's menu, it again reverts to UMTS after a certain length of time.
My brother-in-law's Galaxy S has constant HSDPA connection on the same network. We are both using stock roms.
Sent from my Nexus S using XDA App
you will only see HSDPA when there is network traffic. If the connection's idle, it goes back to display UMTS (to save battery and network resources)
Nexus-S said:
Just to clarify, my Nexus S shows UMTS under status, even when a data connection is active. If I force it onto HSDPA by selecting WCDMA only in the engineer's menu, it again reverts to UMTS after a certain length of time.
My brother-in-law's Galaxy S has constant HSDPA connection on the same network. We are both using stock roms.
Sent from my Nexus S using XDA App
Click to expand...
Click to collapse
Are you using a custom ROM of any kind? It _could_ be an issue with the APN's setup - CM7 for example doesn't set a default APN on my phone which seems to cause mobile data connectivity problems until a default is set/the extra crap is removed.
<edit>
You're probably best starting a new thread for this btw as it's likely to be a different issue to the ops
</edit>
And now after the 2.3.3 update it switches to HSDPA perfectly.
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Anyone noticed on gs2 it switches to 3g until H is needed for data. If I'm in an H area it doesn't stay in that mode all the time.
I know H drains battery more so on the gs1 could the same functioning be transported. In theory giving better battery life?
Just my input and maybe a tribute to my old faithful gs1 and the great community
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Same for my sgs2 (I am on orange)
At first I just thought signal was not so great in area I live but then the H pops back when I start downloading and using net, I can see why they have made it this way but I am also a little unsure as to how much this helps, the swapping from 3g to h then 3g to h and so on and if this itself does not either slow our use as we wait for it to swap back to h and if saves energy or uses more? (like in a car changing gears more often uses more fuel)
skibadee said:
Anyone noticed on gs2 it switches to 3g until H is needed for data. If I'm in an H area it doesn't stay in that mode all the time.
I know H drains battery more so on the gs1 could the same functioning be transported. In theory giving better battery life?
Just my input and maybe a tribute to my old faithful gs1 and the great community
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Click to expand...
Click to collapse
Yes. There are quite a few people with 3G and HSDPA issues:
http://forum.xda-developers.com/showthread.php?t=1074396
http://forum.xda-developers.com/showthread.php?t=1073958
Yours may not be an actual problem if your getting decent speeds but mine is failing to stay on HSDPA when downloading and getting very poor results (64kbps) in an area which I normally get around 2000kbps.
I've spoken to Samsung but they have yet to respond with a resolution.
Dont know if its an issue for me as it swaps back to 3g once its got all it needs (page loaded) its stays 3g until i click on next page or it needs it then jumps to H again.
voodoochild2008 said:
Dont know if its an issue for me as it swaps back to 3g once its got all it needs (page loaded) its stays 3g until i click on next page or it needs it then jumps to H again.
Click to expand...
Click to collapse
Same here - no problem with speeds or whatever, but once it's finished it changes back to 3g. I'm on vodafone.
I'm in Australia with H+ and it will only switch to that when I'm actively downloading something, could be a battery saving feature?
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It's not an issue, my SGS does the same thing.
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Ahh see my sgs (i9000)didn't. It was always on H or 3g depending on signal.
I flashed God knows how many Roms and kernels (mainly darkys & voodoo/speedmod) it never switched like this.
Oh and my battery lasts way longer on my sgs2
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I noticed this too but I have yet to properly test it to see if that's actually what it's doing....
my nexus one also stays on H always and never switches back and forth for the data transfer.
however i thin kit is network dependent sometimes, because when i traveled to a different city a few weeks ago suddenly it would switch between 3G and H anytime data transferred. as soon as i drove about 15 minutes north out of that city, it returned to constant H and back to normal.
so i dont know exactly how or why this is caused. i'd prefer to jsut stay on H and not change back and forth.
Depending on Carrier actively terminating HSPA when data transfer finished?
Is the same on my HD 2 .
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I chose Orange via CPW. I received my SGS 2 yesterday. Such a stunning phone but I'm returning it as I can't connect via HSPDA. My two O2 Galaxy S's sitting on same desk connect at H without issue. If I take out the Orange contract SIM and replace it with one of my O2, the SGS 2 connects at HSPDA immediately. Definitely an Orange issue.
Hopefully I can take advantage of CPW policy to find a network that works for me. Would be great if I could keep the handset (put protective screen on it and time spent customising handset) and pop in another SIM.
Anyone tried changing the preferred network type? On my Nexus One the default (which I never changed) was WCDMA preferred, on the GSII it's GSM/CDMA auto (PRL). A brief bit of research online suggests that this does affect how the phone switches between available network types.
(*#*#4636#*#* then Phone Information, then scroll down, for those who don't know where this is)
snoopstah said:
Anyone tried changing the preferred network type? On my Nexus One the default (which I never changed) was WCDMA preferred, on the GSII it's GSM/CDMA auto (PRL). A brief bit of research online suggests that this does affect how the phone switches between available network types.
(*#*#4636#*#* then Phone Information, then scroll down, for those who don't know where this is)
Click to expand...
Click to collapse
thank you for useful info
I get this issue when I have GSM/WCDMA (Auto mode) selected.
Speed tests are rather slow even when it switches to H. When I select WCDMA only I get great speeds (3Mb+). Still switches between 3G and H though.
My issue is that I've never been able to connect to H+ in central London on Three. Not sure if it's my phone or the network.
This is actually how the umts/hspa technology works. HSPA as a technology is only for data, so it's used only then. Carriers drops the connection back to umts if data is not used.
This is also related to the FastDormancy bug discussed here. So it might also relate to why this phone does it so often or fast.
I've tested two usb-modems and another phone in my location and they all do exactly the same thing what galaxy s ii.
My network provider always drops the connection to 3G if data is not used, it can't be forced. A way around it is to keep a small download going.
E.g. if I use a usb-modem on my laptop and want to keep it in HSPA (for some reason...), I just put wget with 1kt/s download in the background.
The networks capacity is not limitless, so older technologies is used instead.
Hope this clarifies things.
gvoima said:
This is actually how the umts/hspa technology works. HSPA as a technology is only for data, so it's used only then. Carriers drops the connection back to umts if data is not used.
This is also related to the FastDormancy bug discussed here. So it might also relate to why this phone does it so often or fast.
I've tested two usb-modems and another phone in my location and they all do exactly the same thing what galaxy s ii.
My network provider always drops the connection to 3G if data is not used, it can't be forced. A way around it is to keep a small download going.
E.g. if I use a usb-modem on my laptop and want to keep it in HSPA (for some reason...), I just put wget with 1kt/s download in the background.
The networks capacity is not limitless, so older technologies is used instead.
Hope this clarifies things.
Click to expand...
Click to collapse
My problem is not that it goes back to 3G but it's dropping back every few seconds, even whilst downloading. It doesn't happen on my other Android handsets on the same network. So it is a problem.
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I'm in U.S. on AT&T, with an HTC Inspire "4G" and SGS2. The Inspire stays on H+ at all times, idle or active. The SGS2 does bump up to H+ on demand it seems. BTW, The SGS Tools app with the dialer codes still works fine on this device. I've been messing with network bands since I got the phone.
Just to add. I'm using the same vodafone sim card from my old sgs and it always stayed on H unless signal was 3g only area.
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I've posted in many threads regarding this
It didn't do it on my SGS with same sim card/network. Speed results between the two are very similar. Only network performance issues experienced were when immediately after i swapped out the sim card from captivate to SGSII and shortly after i switched my data plan from smartphone plan to medianet
Correct me if i am wrong do i have to uncheck Use only 2g networks in mobile network option .to switch to 3g Network ??..Cause when i uncheck that option my signal shows "H" instead of "3G" ..
And i have heard you can increase storage space in ur nexus 4 by rooting it .can anyone confirm it
Thanks
H=HSPA. Your phone idles in UMTS (3G) until it uses data then switches to HSPA.
To answer you second question - No.
Sent from my Nexus 4
Would there be a way to disable 4G and use 3G
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El Daddy said:
H=HSPA. Your phone idles in UMTS (3G) until it uses data then switches to HSPA.
To answer you second question - No.
Sent from my Nexus 4
Click to expand...
Click to collapse
So i just have to uncheck use 2g option to get 3g... does it show "3G" on top of signal bars or "H" ,,,when i use .it shows "H"
Yes. Leave it unchecked.
Yes it will show 3G until data is in use, then it will show H.
Sent from my Nexus 7 using xda premium
El Daddy said:
Yes. Leave it unchecked.
Yes it will show 3G until data is in use, then it will show H.
Sent from my Nexus 7 using xda premium
Click to expand...
Click to collapse
ah ok..the thing i am using 2G so its showing me E ..when i uncheck use only 2G network it shows H ..(i havent activated 3G plan) ..when u have 2G connection and if u uncheck use only 2G network .do i get 3G speed or it will be on 2G network..
is your problem you are not getting fast speeds? or do you only want to know about whether or not to tick that box?
phermey said:
is your problem you are not getting fast speeds? or do you only want to know about whether or not to tick that box?
Click to expand...
Click to collapse
My problem is when the bar shows "H" does it mean my phone is connected to 3G or should it show "3G" which indicates i have 3G connection
BringIT85 said:
My problem is when the bar shows "H" does it mean my phone is connected to 3G or should it show "3G" which indicates i have 3G connection
Click to expand...
Click to collapse
3g = 3g
h = h+ = hspa+ = pseudo 4g
h means you are on hspa+ (data). i never see a 3g on this phone like i have my older ones. i wouldnt worry about that box and just leave it like it was.
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.
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---------- 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.
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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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