What is an example of the writing purpose to persuade?

well you could do it about a phone like:

The amazing alien phone!!!

Old phone getting you down?

Never works when you need it most?

Well look no further,The Amazing Alien Phone is here!

It's funky,it's sleek, it's cool!!

• You will be envied by your friends! !
• Features
• Cool ringtones
• Plenty of fantastic games
• Easy to use speed buttons
• Can transform into anything you want