How to Check entered Phone number is valid from Phone Directory

Friend's I'm sending an SMS from my android device,here i enter the number manually in the edittext box,and i ha开发者_如何转开发ve message to send,here how can i check the entered phone number is valid number from phone directory.help me..

Try libphonenumber. Google uses it in android 4.0 and above and it looks like it can handle verification.