Kathmandu. Oppo announced Caller OS 12 from China last September. Just today, the company unveiled plans to make a new version of the OS available globally on the latest models of its smartphones. It includes features like clean UI, ‘Omoji’ animated emoji, stable performance, support for wallpaper based themes and better battery consumption management. The… Continue reading Caller OS 12 is available worldwide, when will it come to your mobile?