1
Open the Springboard. Press the “Unlock” button at the topside of your iPhone and swipe to the right across the device screen to unlock the phone and show the Springboard.
2
Find the Viber app. Swipe left or right across the Springboard and find the app with purple phone icon. This is the app shortcut of Viber.
3
Delete the app. Tap and hold the Viber icon for a few seconds, and all the apps on the Springboard will start shaking. When this happens, tap the “X” icon that will appear on the top left corner of Viber’s app icon to delete it from your iPhone.
RESOURCE : WIKIHOW