Most of the times we want to chat some persons but do not want to add that person mobile no in our Mobile. So this app is a good solution for this problem. Just Install Quick start what’s app and open it. After starting this app just enter country code and the what’s app mobile no to which you want to chat and click to what app button and it will redirects you to that person screen to which you want to chat and this way you don’t need to save the Mobile numbers to chat with them.
If in your phone what’s app is not installed than it will redirect you to what’s app web where you need to follow above described steps.