How can I swap blackberry's with my dad without loosing all my info!?!

[writing-my-dissertation-on-BBs]

Hi this is my first post!

Anyway I have a old BlackBerry Edge and my dad has a edge so obviously i want his! He's prepared to swap me but when I tried this I couln't work out how to delete all my text messages and emails etc so he couldn't read them!!!

Please help me find a "deltete all" option on both models, so I can get a better BlackBerry model

Thanks
Jenna x

[gallagherm1993]

use desktop manager and say replace device info. should work