Develop Bugs

How to Powersave through 3g

I was wondering how one switches from 4g to 3g(which i think people here call edge) to save battery.
I dont see it anywhere in settings so i wasnt sure what people did..
Thanks!

I think you mean 3g to 2g. This phone does not have "4g". It's just 3g with higher throughput.
I'm not sure if you can on the stock rom without a USSD code. But on custom roms it's:
Settings
Wireless and network
Mobile networks
Network mode
GSM only.
Unfortunately apps like llama/JuiceDefender can't do it automatically when you're on WiFi or not using data because Google "blocked" it. I think CM7 allows apps to control 2g/3g toggle though.

I thought if your wifi was on the 4g was turned off.
Also, on stock 2.5.- the system folder for wireless settings has a choice to only use the edge frequency. I don't know for any of the modded roms or the newer stock 2.6.- versions. Hope this helped.

T-Mobile uses 3.5g(which they call it 4g) a more advance 3g speeds so a with a 4g/3g toggle wouldn't do any good unless you wanna go to edge/2g. is not like Verizon where I think you have your Band for 2g/3g and a separate Band for 4g so what the toggle does its just turn off the 4g Band and automatically goes to 3g. but with Tmobile your have your Bands for 1g/2g and another band for 3g/3.5g(fake 4g) so using a toggle you would only be blocking 3g.

Use 2G (EDGE) only AT&T?

I will be using the phone on AT&T and I was wondering if the option to turn off 3G is present or use 2G networks. This would be under mobile networks. I ask because I get better coverage on EDGE and have wifi. AT&T has also removed this feature on their Androids for god only knows why.
So can anyone using the phone on AT&T comment whether or not this option is there and if it works correctly? Thanks

MattMJB0188 said:
I will be using the phone on AT&T and I was wondering if the option to turn off 3G is present or use 2G networks. This would be under mobile networks. I ask because I get better coverage on EDGE and have wifi. AT&T has also removed this feature on their Androids for god only knows why.
So can anyone using the phone on AT&T comment whether or not this option is there and if it works correctly? Thanks
Click to expand...
Click to collapse
Of course. Here's the standard mobile network screen:
But when you're on WiFi it doesn't matter. It disconnects mobile data anyways.

Thanks. With my iPhone 4 I was able to turn off 3G and be on Wifi and have a very strong signal versus leaving 3G while being on Wifi and having 1 bar.

MattMJB0188 said:
Thanks. With my iPhone 4 I was able to turn off 3G and be on Wifi and have a very strong signal versus leaving 3G while being on Wifi and having 1 bar.
Click to expand...
Click to collapse
You can manually drop to "2G only" when you turn on WiFi if you want, but it automatically disconnects data when you connect WiFi. All phones hold onto signals to different extents. if you find your phone always on the edge of a 3G/2G handoff, the "2G only" switch will do it for you.
You can always grab a widget to do so as well. Most of the popular ones (I use Widgetsoid) offers a 2G only/2G+3G/3G only toggle type.

[Q] Note 2 not auto switching to 4G?

Hi guys, I'm plenty familiar with the Note II having had mine since October release. I'm having an issue where I will be in a solid 4G coverage area (at my home) and my phone will stay in 2G mode.
There is a problem with either the tower or the phone, I'm leaning toward tower because my wife has my old Sensation 4G which is also staying on 2G. Have any of you encountered/noticed that your phone stays in 2G even though you are in a 4G coverage area? For me either on the Sensation or Note II, I just pick WCDMA, 4G pops in and works great. The only problem is that I have to remember to put it back on auto when I leave the area. I looked up and attempted the cell codes for making the phone prefer 4G, but without success there. Also my phone picks up 4G automatically when I'm at work, so again leaning toward tower (but how and why the tower can control this I have no idea).
I also noticed some threads claiming wifi calling would detect wireless networks nearby and disable 4G. I'm leaning towards BS on that because 1. my wi-fi is almost always turned off (true unlimited 4G plan), and 2. when I disable wifi calling all together it still exhibits the same behavior.
I'm running out of ideas - any help is appreciated!

vinas1 said:
Hi guys, I'm plenty familiar with the Note II having had mine since October release. I'm having an issue where I will be in a solid 4G coverage area (at my home) and my phone will stay in 2G mode.
There is a problem with either the tower or the phone, I'm leaning toward tower because my wife has my old Sensation 4G which is also staying on 2G. Have any of you encountered/noticed that your phone stays in 2G even though you are in a 4G coverage area? For me either on the Sensation or Note II, I just pick WCDMA, 4G pops in and works great. The only problem is that I have to remember to put it back on auto when I leave the area. I looked up and attempted the cell codes for making the phone prefer 4G, but without success there. Also my phone picks up 4G automatically when I'm at work, so again leaning toward tower (but how and why the tower can control this I have no idea).
I also noticed some threads claiming wifi calling would detect wireless networks nearby and disable 4G. I'm leaning towards BS on that because 1. my wi-fi is almost always turned off (true unlimited 4G plan), and 2. when I disable wifi calling all together it still exhibits the same behavior.
I'm running out of ideas - any help is appreciated!
Click to expand...
Click to collapse
In settings>more settings>mobile networks>network mode:
You should ALWAYS be set to GSM/WCDMA (Auto mode)
This will automatically get you the best data signal available at your location. If you only get 2G in some locations, that's normal. You can try calling TMO support and have them check your address to see if you SHOULD have 4G at that location. If you really want to try to see what is going on, install an app called Open Signal Maps form the Play store. Among other useful things, it will geolocate the towers you are connected to complete with distance and mapped street address.
Where I live I only ever get 2 or 3 bars of 2G data. I use the TMO wifi calling app for all my calls and texting. This is only way I can get reliable service at home.

vouty said:
In settings>more settings>mobile networks>network mode:
You should ALWAYS be set to GSM/WCDMA (Auto mode)
This will automatically get you the best data signal available at your location. If you only get 2G in some locations, that's normal.
Click to expand...
Click to collapse
Thanks for replying vouty. When I switch from auto mode to WCDMA I have 4 full bars. That's the funny part. Speedtest is giving me around 12Mbps down 3 up on average (I live right by the tower - like .5 mile), so there is for sure something strange happening. If I keep wifi on it really isn't an issue, but I prefer to not mess with wifi and just keep it in 4G while at home, but as frustrating as this problem is, the phone refuses to switch from 2G on it's own. Once I toggle from AUTO to WCDMA, and then back to auto - it will stay on 4G. It's almost as if I am waking it up and causing the phone to re-detect the signal.

vouty said:
In settings>more settings>mobile networks>network mode:
You should ALWAYS be set to GSM/WCDMA (Auto mode)
This will automatically get you the best data signal available at your location. If you only get 2G in some locations, that's normal. You can try calling TMO support and have them check your address to see if you SHOULD have 4G at that location. If you really want to try to see what is going on, install an app called Open Signal Maps form the Play store. Among other useful things, it will geolocate the towers you are connected to complete with distance and mapped street address.
Where I live I only ever get 2 or 3 bars of 2G data. I use the TMO wifi calling app for all my calls and texting. This is only way I can get reliable service at home.
Click to expand...
Click to collapse
Cool app, very useful, appears I am on 3g at home. Turning off wifi to see if it changes to edge while using data.
Sent from my SGH-T889 using xda premium

[Q] Need help: Sprint GNex, no 4G... ever

I've had a Sprint Galaxy Nexus for about 4 months and have never seen a 4G indication. It's non-rooted, running stock Jellybean with FH05 radios.
I live in Houston and have also traveled to Chicago, Phoenix, San Francisco, and Los Angeles with this phone without ever seeing a 4G indication. I looked at the Sensorly 4G maps in Houston and drove along the 4G routes for a couple hours and never got any 4G signal.
I've played around with the *#*#4636#*#* menu but I haven't found anything that made any difference. Most of the posts say to select "LTE Only", but my menu does not have that option. It is currently set to "GSM/CDMA Auto (PRL)".
Can anyone think of something I'm missing? I'm eligible for an upgrade next month but I was planning to stick with the GNex a few more months. This 3g-only crap is killing me. I was hoping to keep the phone stock so I can pass the phone off to my mom/wife when I upgrade (without having to revert to stock), but it looks like I might have to root/rom it if I can't find a better answer.

crying for help :crying:

I would say after typing in the secret menu code, turn off the radio and turn it back on; see if that does anything.
Are you sure their isn't a LTE Only option? It should be at the bottom like the last option.'
If you're really that desperate for LTE, you might have to root your phone and flash a radio (which isn't too horribly hard to do) or change the PRL manually.

electro` said:
I would say after typing in the secret menu code, turn off the radio and turn it back on; see if that does anything.
Are you sure their isn't a LTE Only option? It should be at the bottom like the last option.'
If you're really that desperate for LTE, you might have to root your phone and flash a radio (which isn't too horribly hard to do) or change the PRL manually.
Click to expand...
Click to collapse
I've tried turning the radio off/on. I don't see an LTE Only option in the menu, but I'll check again to make sure.
I'm beginning to think that I may need to root/flash to get it going. I was hoping that having one of the nexus phones would get me away from flashing half-working ROM's every couple weeks, but it looks like I'm headed back that way :silly:.
Thanks for the suggestions

4G works just fine stock. If it isn't working for you now it most likely still won't work if you root and flash a different ROM. 4G maps aren't all that accurate and 4G signals drop in level fast when there are things between you and the tower. Either something is wrong with your phone or you just haven't been in an area which a strong enough 4G signal for your phone to pick it up. Make sure your phone is set to CDMA/LTE in the mobile network settings and not to CDMA only.
Sent from my Galaxy Nexus using xda app-developers app

How do you know your area has LTE? Do you know someone who has your carrier that gets LTE? If you're going by a coverage map, as said before, blah. You shouldn't need to tamper with your phone to get LTE. Try contacting your provider if your that concerned. The setting you have in the secret menu does a lot. Make sure that its set to something that allows LTE. Even my GSM HSPA+ nexus has an LTE Only option.
Sent from my Galaxy Nexus using xda app-developers app

Thing with sprint ive noticed is it uses whatever signal is the strongest. So while you may have 4g coverage, if your 3g is even a signal signal strength higher, it always uses that. You should be able to force lte, but from what I've read that causes calls and SMS/MMS to break until you revert back to auto.
Sent from my Galaxy Nexus using xda app-developers app

We had one of our users of sourcery write about this issue.
http://forum.xda-developers.com/showthread.php?p=74427
[ROM] JBSourcery V4.4 (updated 1/19)
Sent from my Galaxy Nexus using xda app-developers app

electro` said:
How do you know your area has LTE? Do you know someone who has your carrier that gets LTE? If you're going by a coverage map, as said before, blah. You shouldn't need to tamper with your phone to get LTE. Try contacting your provider if your that concerned. The setting you have in the secret menu does a lot. Make sure that its set to something that allows LTE. Even my GSM HSPA+ nexus has an LTE Only option.
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
I had the same suspicion about the coverage maps which is why it took so long for me to post for help. Recently I sat in the same car with an EVO LTE that was getting a 4g signal and I got no 4G. That's what made me take a second look at my settings to see why I wasn't getting it.
It could very easily be a matter of picking the strongest signal and I'm ok with that. The secondary problem that I have is that I've read so many descriptions of an "LTE Only" option in the networks menu and I don't have that either . In fact, none of the options in my menu specify "LTE", even in combination with CDMA.
My list of networks in the special menu:
WCDMA preferred
GSM only
WCDMA only
GSM auto (PRL)
CDMA auto (PRL) (3G)
EvDo only
GSM/CDMA auto (PRL) (default - 3G)
Unknown
Thanks for all of the responses, I'll keep digging for a solution.

mkuehl06 said:
We had one of our users of sourcery write about this issue.
http://forum.xda-developers.com/showthread.php?p=74427
[ROM] JBSourcery V4.4 (updated 1/19)
Sent from my Galaxy Nexus using xda app-developers app
Click to expand...
Click to collapse
That URL didn't work for me. Can you doublecheck it for me? Thanks

http://forum.xda-developers.com/showthread.php?p=37374427
[ROM] JBSourcery V4.4 (updated 1/19)
Sent from my Galaxy Nexus using xda app-developers app

LTE and 3g handoff problems

I just came back to sprint from Verizon and I have 4g in my area but its weak at my house. My problem is this. Ill habe tje 4g icon in the status bar but it wont do anyrhing cause its so weak but I cant get 3g to come on and sometimes when I switch off wifi I have no data at home until I reboot or toggle airplane mode. Its like its not switching between 3g and 4g properly. Anyone else have this problem? I just got the phone 3 daya ago and want to make sure its not my phone. Ill also have trouble when it does finally show 3g from 4g it takes a while bwfore the 3g will even give me internet access. Thanks for all the help guys.
Also I know I can just switch to evdo mode and it works fine thwn but its a oain to switch it to lte when I keave cause when I leavw the house I get good 4g service.
Sent from my SPH-L900 using xda premium

musclehead84 said:
I just came back to sprint from Verizon and I have 4g in my area but its weak at my house. My problem is this. Ill habe tje 4g icon in the status bar but it wont do anyrhing cause its so weak but I cant get 3g to come on and sometimes when I switch off wifi I have no data at home until I reboot or toggle airplane mode. Its like its not switching between 3g and 4g properly. Anyone else have this problem? I just got the phone 3 daya ago and want to make sure its not my phone. Ill also have trouble when it does finally show 3g from 4g it takes a while bwfore the 3g will even give me internet access. Thanks for all the help guys.
Also I know I can just switch to evdo mode and it works fine thwn but its a oain to switch it to lte when I keave cause when I leavw the house I get good 4g service.
Sent from my SPH-L900 using xda premium
Click to expand...
Click to collapse
4G is always a priority over 3G if you have it enabled. There's no way around it unless you switch lte off. So if you're in a weak 4G coverage and your phone gets the signal it will take over your 3G. Wifi is always 1st priority, 4G 2nd, then 3G, finally 2G. As long as those radio are on that's the order they work. Was always like that even in wimax devices. Switch to cdma while at home or connect to wifi.
Sent from my SPH-L900 using xda app-developers app