Need Assistance Regarding Phone number validation for my project

[Abhilashken]

Sir, I am a newbee and working on college project(android app) which has some form, in which there is a field for mobile number and I am finding it difficult or say impossible to validate it, I tried to understand your library but no help so far. Kindly help me in layman terms about how to validate it. I will be thankful to you. please ping me on [email protected] when you feel available to help. Awaiting your reply