BSNL rolls out VoWiFi calling across India: What it means, how it works and who can use it

BSNL has launched Voice over Wi-Fi or VoWiFi services across all telecom circles in India. The feature enables users to make ...

8 HDMI tricks to get the best performance from your TV - and most are free

If your devices only support up to 4K at 60Hz, a "premium high-speed" HDMI cable (18Gbps, HDMI 2.0) is perfectly fine. Again, just avoid really old or thin cables. Early HDMI cables (HDMI 1.4 or older ...