Why am I unable to make calls using phone dialer on Reliance JioPhone?

Reliance Jio had introduced JioPhone which costs approximately 1500 Indian bucks and it is a feature phone with 4G enabled Volte feature. It runs with KaiOS. This operating system has become third largest selling operating system. Th first and second mobile operating systems are Android and Apple mobile operating system respectively. This simply goes on Continue Reading »Original link