Is there a way to switch between radio modes without the phone radio completely shutting down?

Question

Is it possible to have the radio switch between WCDMA Preferred mode, GSM mode, and WCDMA only, for example, without the radio switching off and on again? The radio completely loses signal during the, which isn't ideal.

It seems like it must be possible theoretically, as the phone doesn't lose signal when in WCDMA preferred mode, when it downgrades to GSM because of poor signal.

If it matters, I'm using an HTC Desire Z running Cyanogen 10.1 (Android 4.2 based). This problem also occurred on all previous versions of CM that I've tried, and on stock JellyBean 4.2.

This also occurs on a Nexus 4 on JellyBean 4.2.

Answer 1

In stock android 4.0.4 it's available-wcdma only,dual mode,gsm only.But in custom ROM's as AOKP they have no wcdma only mode,even in android 4.2.2 AOKP version .It's really pathetic when you use internet in dual mode-umts/hsdpa only/hsdpa & hsupa as in AOKP android 4.2.2 version because signals tend to reroute to gsm when strength decreases instead of sticking to what is left of hsdpa/wcdma as in wcdma only mode,available in stock android 4.0.4- i am using sgs2 GT-i9100.