You can ask everything you want to ask to a girl on the phone
why to think so much.
If you want a girl's phone number, ask her for it.
well, you should ask for a girl' s phone number if you like her or you think you might have a chance with her and she might just like you then you should ask her.
Go up to her and ask her. Plain and simple.
Call her, chat a bit, and then ask if she would like to go out.
That depends. If you don't know here, then you probably should talk to her and get to know her first. If it's a girl you know, then it would be acceptable to ask her for her phone number.
Wait for the right time to ask. Ask the girl for her phone number to see if she wants to hang out or go out sometime. Perhaps try: "It would be great to know you better. Is there a number where I can reach you?"
You go up to them and start talking to them first. After a little talking then you can ask for their phone number. The worse that can happen is they can say no. You could also download an app to help you, search for "How to get a girl's phone number" on Android
you're lazy
Ask for her phone number and call her or text her.If you like her don't be shy to tell her and ask her out.
ask her to a movie or something.
it means she wants you to ask her out.
Ask a cute girl what her e-mailaddress is. Better yet, ask her phone number.