Preferred is the best choice if your area doesn't have strong 3g/4g signal. Where I live I have strong 3g/4g signal so I set my phone to WCDMA only.
Only downside is when you hit a dead area with a weak signal you lose all connection because the phone is set to work on 3g/4g only. Can't make a call or surf the web.
If you don't want your phone switching to gprs set your phone to WCDMA only.
Sent from my HTC Incredible S using XDA App
Last edited by NardVa; 24th April 2011 at 05:30 AM.