Is there a way to force iPhone 4 to search for 3G connectivity if it's on GPRS/EDGE?

[FXT 1]

I was just wondering whether there was a way to force iphone 4 to search for 3G connectivity from GPRS/EDGE as I live in an area with moderately weak 3G. I was able to do this on my iPhone 3G simply by toggling the 3G switch in settings but Apple must have seen this as a bug and corrected it, toggling 3G on my iPhone 4 no longer forces it to search for 3G.

Is there any way to do this on iPhone 4? Is it something to do with iOS4 ?

 

[Intell]

It automatically searches every few minutes. If you still want to force it, try toggling Airplane Mode.

 

[184550]

Couldn't you just turn 3G on/off in settings to force it to look for the 3G signal? Like on the 3GS?

 

[DiamondGCoupe]

No it's just going to pick up the strongest signal. Only thing you can do for now is what you have been doing.. I get this occasionally in certain areas in LA.

 

[bobdigi]

I use the Airplane mode toggle.

 

[Moe UK]

I used to have this issue when I was on o2 with my 3G at my work place. A quick reboot of the phoen would force it to look for the network again and most times it would then latch on to a 3G signal.

 

[elwood2]

If your iPhone4 is jailbroken, SSH to /var/preferences/csidata. Save a copy of the file to your computer.

Open the file in notepad or some other text editor and look for “GsmRegistrationModel::fRatSelection=0×1″ and change "0x1 to 0x2", save the file and upload it back to your phone and replace it. Reboot your phone and you will have 3G only and if there's no 3G signal it will search for signal for a while then go to "NO SERVICE". It will only connect to 3G and never Edge until you change it back.

This works for the 3GS on 3.x. I have not looked at my iP4 yet to see if the file location is still the same.

Here's the other settings:

0×0(EDGE ONLY)
0×1(EDGE+3G)
0×2(3G ONLY)

Let me know if it works.

 

[macinmac]

I would also try to enable 3G and then select network manually instead of automatic.