my phones broken and i have a back up one so i just basiclly want the people at verizon to put my number on my back up one and i guess activate it... how much would that cost? $20?

doesn't cost a cent. just call customer service and request an esn change. they'll guide you on how to find the esn decimal barcode. most of the time it is on the back of the phone under the battery.

yes they charge $20 to so a esn change but u can do it online on ur account by login into ur account, go to my phone, activate phone, under existing equipment activate equipment, select ur phone #, put in the esn # from under the battery, and select reason why and u should be set.