title: How to validate phone number in android application?
body: <p>I am working on android. In my app users will register by entering their phone number in edittext. This phone number is then saved in database. Now when the user login with the app, I am getting the list of contacts from his mobile and comparing that with the people who register with this app. If the number in the contacts list matches with the number in the database, then I need to display those numbers in listview. Here the problem is if the user save his number with +91 or with 0 before his contact then the number in the database is not matching with the contact. At that time the numbers are not displaying.</p>
  
  <p>For this issue, Do we need to keep any alert before entering the number in edit text? For example in edit text I gave, Ph no: 8923458128 and the saved it in database. Now I logged in with this number and my contacts list for suppose</p>
  
  <ol>
  <li>9823484586</li>
  <li>+919988334856</li>
  </ol>
  
  <p>Lets say the above 2 numbers are stored in database. But the 2nd contact , the user entered as 9988334856 without +91. Then finally in the listview instead of 2 numbers only 1 number is displaying as the second number is not matching with database number.</p>
  
  <p>How can I solve this issue? Please help me in this regard.</p>