How to ask her for her number?

I really like this girl in one of my class and I would like to talk to her after school. We only have one class together and I would like to talk to her more. But, I don't know who to ask her for her number without saying really creepy. I have also never asked a girl for her phone number (I know I'm 16 quite sad. ).
Should I go like this:
Me: How are you?
Her: Good, you?
Me: Same.
Her: How was your weekend? (She usually asks me that)
Me: Great, I was with one of my friends on Friday after school. On Saturday I got my iPhone changes.
Me: Oh, I have asked you this yet, but can I have your number?

Or is there something better I can say at the end, do, or bring it up?

If she brings her phone out be like i got my iphone or whatever you did with it and be like what's your number?

Perfect! The key to getting a girl's number is to ask for it with confidence, like it's nothing. If you make it seem really important she might hesitate. But I've never heard a girl reject to give a guy her number, unless she thought he was hitting on her and she already had a boyfriend.

  • Should I ask a girl for her number like this? I was going to send a screenshot of the page when you add a new contact on the iPhone. So it'll be a picture saying name, number, etc…
  • My mam took out her iphone 4 under contract with t-mobile and her screen was smashed? She does not have insurance and the phone is under a year old, she took the contact out in january 2012. does anyone know if the apple store will fix the screen? Or if i can get it fixed any way with having pay loads of money? :) thank guys
  • My ask.fm won't let me ask anonymous? I have an iPhone 4, and I didn't update to iOS7. When the ask.fm app had an update recently, it didn't allow people to ask anonymous. So people could delete it then just not update it when they redownloaded it. Well I have deleted it like 3 times and I haven't updated it either. Why can't I ask anonymous questions still? And how can I?
  • If I ask my cousin in Australia if she has a iPhone, should I ask for her Email address? My cousin Britteny lives in Australia and she has a 19 hour different time zone from us Californians. We text each other through my dads Facebook Messenger. If I ask her for her Email address and if she has a iPhone, do you think it will be a good idea to actually talk to each other? She is a 15 year old girl, and I'm a 14 year old guy.