On your iPhone, go to and "Trust" your Apple ID profile.

To download the app for your iPhone or iPad, the safest and official method is through the Apple App Store How to Download and Install Open the App Store : Locate the icon on your home screen. : Tap the search tab and type Select the App : Look for "imo-International Calls & Chat" developed by

Some third-party "app stores" offer direct downloads, though these often rely on enterprise certificates that Apple frequently revokes. Important Security Warning