call icon not responding on Trifa

Expected behavior

i expected the call icon to respond when clicked to call a friend.

Actual behavior

There was no response when clicked,it was just stagnant.

How to reproduce

download Trifa from google play and install,launch the application, add a friend, click the call icon to call a friend.

• Operating system: Android version 5.1 :

• Device used: Gionee P5 mini

• App version: 1.0.14

Recording Of The Bug