I want to purchase a cell phone having a internet modem. which is the best for this purpose. Also i want the cell phone will get charged though pc during using as modem.
suggest the best result.

Nokia E series mobiles and blackberry mobiles are good for internet connectivity,i used E 62 it is the modem phone i ever used

Phone as modem.. All phone works good except few connection setup problem. Once you are able to set it up properly, its good. I have used many phones as modem but what I have learned that never use phone as modem as main medium of your internet. It reduce your battery life very quickly . If you are going to use internet through mobile service then better buy USB dongle for that. Yes, for occasional use, phone as modem is alright !

please tell me more about USB dongle and its price.......I am very much habitual of internet and want to purchase low cost modem