How do i switch from 3g to 2g on my iPhone 4?

trenfro

macrumors newbie
Original poster
Jan 1, 2012
26
0
I mainly want to do this to save battery life. Any help is greatly appreciated. Thank you
 

Daveoc64

macrumors 601
Jan 16, 2008
4,057
49
Bristol, UK
Are you sure you chose the 3G option?

Your phone will most likely have two options as shown in the following screenshot.

Enable 3G

Cellular Data (shown as the British English equivalent "Mobile Data" here)

The first option will disable the 3G network and only enable your carrier's 2G network (which may provide GPRS, EDGE or 1xRTT data). If there's no 2G signal or the network doesn't support data then you wont be able to use it in the way that you want to.

What do you see in the top left of the phone? Your phone will show a different symbol for each type of network:

http://support.apple.com/kb/HT1976
 

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trenfro

macrumors newbie
Original poster
Jan 1, 2012
26
0
Are you sure you chose the 3G option?

Your phone will most likely have two options as shown in the following screenshot.

Enable 3G

Cellular Data (shown as the British English equivalent "Mobile Data" here)

The first option will disable the 3G network and only enable your carrier's 2G network (which may provide GPRS, EDGE or 1xRTT data). If there's no 2G signal or the network doesn't support data then you wont be able to use it in the way that you want to.

What do you see in the top left of the phone? Your phone will show a different symbol for each type of network:

http://support.apple.com/kb/HT1976
When 3g is on I see: 5 of 5 bars Verizon 3G, when it's off is see: 5 of 5 bars Verizon
 

dave006

Contributor
Jul 3, 2008
3,358
671
Just West of East
I mainly want to do this to save battery life. Any help is greatly appreciated. Thank you
Settings > General > Network > 3G on/off.
What version of iOS do you have?

If you have iOS 5 then the option to turn off 3G "only: is not currently available. It is floating around in the new Beta of iOS 5.0.3 so expect it to return as it does help with battery usage in some situations.

Dave
 

wordoflife

macrumors 604
Jul 6, 2009
7,563
32
Oh you can't really turn off 3G on Verizon/Sprint phones.

The phone uses 3G network for data and 1x network for voice. So if you disable cellular data, you're basically disabling 3G. You can't use 1x for data though.
 

NZed

macrumors 65816
Jan 24, 2011
1,136
1
Canada, Eh?
What version of iOS do you have?

If you have iOS 5 then the option to turn off 3G "only: is not currently available. It is floating around in the new Beta of iOS 5.0.3 so expect it to return as it does help with battery usage in some situations.

Dave
isnt it the iOS 5.1 beta 3 already???
 

Applejuiced

macrumors Westmere
Apr 16, 2008
40,672
6,404
At the iPhone hacks section.
isnt it the iOS 5.1 beta 3 already???
Yes.
I wonder if they will enable that option for the 4S too?

Oh you can't really turn off 3G on Verizon/Sprint phones.

The phone uses 3G network for data and 1x network for voice. So if you disable cellular data, you're basically disabling 3G. You can't use 1x for data though.
Exactly.
Welcome to the CDMA world:)