Use only 2G networks.

-Arturo- · Jun 27, 2010

I have a problem with setting android to only use 2G networks. I can tick an option under settings "Use only 2G networks" but after i leave the settings menu it gets "unticked" again threfore i,m constantly on 3G which wouldn't be a problem but in the areas where there is no 3G signal android loses signal and wont connect to 2G network. I can turn off 3G under winmo tof orce android to only use 2G networks but it takes time. My question is can anyone successfully setup their android to use only 2G networks?

wassermam · Jun 27, 2010

Same Problem

I´m having the same problem and for me it´s worse because it drain my battery really fast (don´t last more than 4 hours).

Could somebody please fix it as soon as possible because this way is really difficult to use android as main OS.

When I put a Sim Card that doesn´t have 3g I don´t have this battery problem.

I hope somebody could help me with this problem.

odz · Jun 28, 2010

could someone please look into this? 3G kills my tilt realy fast too. this is the only thing stoping my from using android as my main os.

kallt_kaffe · Jun 28, 2010

odz said:
could someone please look into this? 3G kills my tilt realy fast too. this is the only thing stoping my from using android as my main os.

Try this:

$ su
# rwsystem
# nano system/build.prop
Find the part that says something about default_network=0. Try changing it to 1. Save with dpad-center+x, then y and enter.
# rosystem
Restart your phone to have it take effect. I'm currently trying out the value 3 which is "use GSM or WCDMA, whichever provides the strongest signal" and it seems to work better for me. Before I often had switched to Roaming after calls and somethings loosing connection completely, but I have only tested it for a short time so I'm not 100% sure if it helped or not.

Next release will include scripts to change this and some other things easily.

Oh, and the value 1 is supposed to be "GSM only" so it might help.

-Arturo- · Jun 28, 2010

kallt_kaffe said:
Try this:

$ su
# rwsystem
# nano system/build.prop
Find the part that says something about default_network=0. Try changing it to 1. Save with dpad-center+x, then y and enter.
# rosystem
Restart your phone to have it take effect. I'm currently trying out the value 3 which is "use GSM or WCDMA, whichever provides the strongest signal" and it seems to work better for me. Before I often had switched to Roaming after calls and somethings loosing connection completely, but I have only tested it for a short time so I'm not 100% sure if it helped or not.

Next release will include scripts to change this and some other things easily.

Oh, and the value 1 is supposed to be "GSM only" so it might help.

Kalt, should we change this "ro.telephony.default-network=0"? to "1"
If so, it didn't work for me . I'm still on 3G.

kallt_kaffe · Jun 28, 2010

-Arturo- said:
Kalt, should we change this "ro.telephony.default-network=0"? to "1"
If so, it didn't work for me . I'm still on 3G.

Yes that's the one. Well, getting information about the settings in build.prop isn't easy. I'm don't know if the information I found was a fact or just a guess.

-Arturo- · Jun 29, 2010

kallt_kaffe said:
Yes that's the one. Well, getting information about the settings in build.prop isn't easy. I'm don't know if the information I found was a fact or just a guess.

Kalt does this issue also occur while running Android from Nand?

Takiyon · Jul 3, 2010

HELP!!!

I have tried everything here and still no 2G. I love android but battery life sucks. There has to be a way to force 2G all the time. 3G is great but if batterylife will suffer so badly I want to turn it off perminently. Does anyone know how to do this? I'm using VaniljEclair RLS7c and I have been messing with the scrips in the update and still nothing after reeboot.

Millence · Jul 3, 2010

Takiyon said:
I have tried everything here and still no 2G. I love android but battery life sucks. There has to be a way to force 2G all the time. 3G is great but if batterylife will suffer so badly I want to turn it off perminently. Does anyone know how to do this? I'm using VaniljEclair RLS7c and I have been messing with the scrips in the update and still nothing after reeboot.

I have tried everything too with almost all builds (1.6 2.1 and 2.2). My opinion is that ro.telephony.default-network command do not work on Kaiser. If ro.telephony.default-network is removed from build.prop nothing happens. Maybe TelephonyPprovider.apk is something to do with 2G 3G switching.

Takiyon · Jul 12, 2010

Bump... Please someone help us!! There has to be some hack we can try.

illegal2008 · Jul 28, 2010

Please help us!!!

Neotype33 · Aug 2, 2010

I agree,

Would be great to be able to force certain networks. If you look at the power usage/ per network the faster the network the more power it consumes. I'd like to be able to by default use the low speed and switch it to fast when I'm really using the phone. My EVO has a 4G widget switch. If it didn't the phone would be worthless to me as 4G in my area is not great. 2hrs 4G on (with no 4g network) = -40% battery... Love to do the same for 3G as that would save "about" 20% more battery life alone. I might get a whole day of use without charging...

pro_hvtc · Aug 3, 2010

-Arturo- said:
I have a problem with setting android to only use 2G networks. I can tick an option under settings "Use only 2G networks" but after i leave the settings menu it gets "unticked" again threfore i,m constantly on 3G which wouldn't be a problem but in the areas where there is no 3G signal android loses signal and wont connect to 2G network. I can turn off 3G under winmo tof orce android to only use 2G networks but it takes time. My question is can anyone successfully setup their android to use only 2G networks?

Very simple. You use file follow. You install it,only mark or unmark for 3G or 2G. I'm from Vietnamese. I speak E not very well. I'm sr if you don't undertand

illegal2008 · Aug 3, 2010

looks like this is only for 3g-2g data connection.Discussion is about GSM -CDMA network

-Arturo- · Aug 3, 2010

pro_hvtc said:
Very simple. You use file follow. You install it,only mark or unmark for 3G or 2G. I'm from Vietnamese. I speak E not very well. I'm sr if you don't undertand

As far as i know apndroid disables both 2g/3g connections and we only need to block system from using 3g connections leaving 2g still connectable.

milanche · Aug 3, 2010

Has anybody seen this before?

http://www.android-cellphones.org/android-motorola-droid-tricks-disable-3g.html/

I get the settings, but the problem is that I can't choose any - no matter what I choose it stick to "Unknown" type..

-Arturo- · Aug 3, 2010

milanche said:
Has anybody seen this before?

http://www.android-cellphones.org/android-motorola-droid-tricks-disable-3g.html/

I get the settings, but the problem is that I can't choose any - no matter what I choose it stick to "Unknown" type..

I've tried that a while ago and it didn't work for me.

milanche · Aug 3, 2010

I've bin going thru htcgeneric-ril.c (source of libhtcgeneric-ril.so), provided in another topic and noticed this lines:

Code:

switch (rat)
	{
		case 0: at_rat = "1,2"; break;/* Dual Mode - WCDMA preferred*/
		case 1: at_rat = "0"; break;  /* GSM only */
		case 2: at_rat = "2"; break;  /* WCDMA only */
	}

Could there be a solution lurking in those lines to ongoing 2G/3G switching problem on Kaiser devices with Android?

zenity · Aug 3, 2010

Those look like the settings from the phone information screen in testing, it's certainly the right area to be looking in.

Question: who's gonna be brave enough to hack htcgeneric-ril.c and recompile that lib?

milanche · Aug 4, 2010

I already asked n2rjt to do it, if it's possible - still waiting for his reply.

Use only 2G networks.

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