Gadgets 360 With Technical Guruji: Ask TG

I keep seeing black bars that roll on the screen while recording videos, which affects the quality of the video that is captured. How can I prevent them from appearing? I want to discover astrophotography using a smartphone, so which one is the best one to consider? What are the best fitness bands I can buy today? There are so many to choose from, but I want one that offers important features but is also not too expensive. We answer all your burning tech queries on the latest episode.