my friend has c3 ...overall its a nice fone but its keypad is not smooth like my e63 ... keys produce sound like tak tak when pressed ..not soundless like my e63 ...
one main disadvantage according to him is that when we connect using wifi and after that disconnect it, it automatically starts connect using phone gprs of service provider and hence ur balance deducts .... the only way to stop this is deleting the gprs profile ... i donot personally experience that but according to him thats the main problem of this cell ....
customizable home screen feature is cool ...
screen resolution is good too for that price ...
phone supports flash content such as youtube etc ...
but i would suggest u to rather buy a symbian phone without wifi such as 5233 etc because zong is providing gr8 internet packages with 2gb and 4gb downloading and u dont need to have wifi ... plus additional freedom of symbian os ...
hope this helps 