My experience - at the moment - is specifically with jQTouch and iPhones. I've found that it performs well for simple views, but haven't tried anything complex.

My experience - at the moment - is specifically with jQTouch and iPhones. I've found that it performs well for simple views, but haven't tried anything complex. In general, PhoneGap's going to perform the same as if you tried it in the phone's browser. From some stuff I tried before, Android browser performance was noticeably slower than iPhone browser performance, but not so much as to make it unusable. I suspect it'll depend heavily on the device you're testing.