I noticed that my phone does not switch to any mobile network whenever my wifi strength is too low for Internet connectivity. I have to manually switched to airplane mode then back..
I googled around and found out that it is a common prpblem and Samsung is looking into a fix for it. Is it true?
Is there any app out there that I can use temporarily that switches to the best signal strength? This would help on the battery life of my phone too!
More info: I'm on a Sweden 4.1.2 stock rom (DLL1) with my country's default modem (AJL1). Will it affect the switching? Also I have frozen some samsung default application/service to prolong my usage..
Sent from my GT-N7105 using xda app-developers app
Related
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?
Sent from my GT-I9000M using XDA App
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.
Sent from my GT-I9000 using XDA App
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.
Sent from my GT-I9000 using XDA App
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
Sent from my GT-I9000 using XDA App
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
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
Sent from my GT-I9100 using XDA Premium App
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
Sent from my GT-I9100 using XDA Premium App
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?
Sent from my GT-I9100 using XDA App
It's not an issue, my SGS does the same thing.
Sent from my GT-I9000 using XDA App
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
Sent from my GT-I9100 using XDA Premium App
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 .
Sent from my GT-I9100 using XDA App
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.
Sent from my GT-I9100 using XDA App
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.
Sent from my GT-I9100 using XDA Premium App
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
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.
I upgraded my phone a couple of days ago and only noticed today there's no way of turning off 3G which is something new with Kit Kat.
In all iterations of Jelly Bean I could select 2G or 3G which was useful as most of Lincolnshire UK is rural and has a just about usable 2G network and 3G is practically no existent apart from in the large towns and cities.
What I noticed with Jelly Bean was that if I left it on 3G all the time it would kill the battery but leaving it on 2G improved the battery greatly.
Given now that Goggle have either decided that everyone has access to a 3G network and doesn't need the 2G switch anymore or have greatly improved the battery management when 3G is selected leaves me with a potential problem with battery life.
I will know over the next few days if the battery is still draining more quickly than previously when 2G was selected but in the meantime does any one know a way of switching of the 3G and only selecting 2G?
Thanks
Jon
I noticed this too and you are right staying on 2g will improve battery. You could install an app like tasker which will allow you to change to 2g, search the play store for 2g switchers or you could install a custom ROM like cataclysm which has a 2g/3g quick tile
Sent from my Nexus 4 using Tapatalk
How about the old classic. *#*#4636#*#* select phone info then choose gsm only.
Sent from my Nexus 4 using Tapatalk
jonchill said:
I upgraded my phone a couple of days ago and only noticed today there's no way of turning off 3G which is something new with Kit Kat.
In all iterations of Jelly Bean I could select 2G or 3G which was useful as most of Lincolnshire UK is rural and has a just about usable 2G network and 3G is practically no existent apart from in the large towns and cities.
What I noticed with Jelly Bean was that if I left it on 3G all the time it would kill the battery but leaving it on 2G improved the battery greatly.
Given now that Goggle have either decided that everyone has access to a 3G network and doesn't need the 2G switch anymore or have greatly improved the battery management when 3G is selected leaves me with a potential problem with battery life.
I will know over the next few days if the battery is still draining more quickly than previously when 2G was selected but in the meantime does any one know a way of switching of the 3G and only selecting 2G?
Thanks
Jon
Click to expand...
Click to collapse
you can choose 2G in Network mode in Wireless & Network settings
taodan said:
you can choose 2G in Network mode in Wireless & Network settings
Click to expand...
Click to collapse
No you can't, it shows 3G only with no option for 2G selection.
jonchill said:
No you can't, it shows 3G only with no option for 2G selection.
Click to expand...
Click to collapse
Are you using stock KitKat 4.4 ROM? I am using PSX KitKat ROM and it has 2G and 3G in Network Mode. You might want to flash the custom ROM for the options.
Or just use the dialer code I posted...
Sent from my Nexus 4 using Tapatalk
I've check everything and i can't seem to find the culprit (unlocked AT&T G2 on Tmobile network LTE).
Big problem must google ?
Sent from my LG-D803 using XDA Free mobile app
When I first got my g2 I was having battery drain as well turned out for me it was Wi-Fi always scanning under Wi-Fi then settings then advanced Wi-Fi I turned off Wi-Fi always scanning and it's been good since