It happens in the blink of an eye. You place your phone down on a counter at the cash register or feel a slight bump as you get off the subway, only to later realize your phone is gone. Regardless of how you lose it, be it from theft or a simple mistake, losing your phone is a stressful experience. What someone who finds a lost or stolen Android phone will see after you use Find My Device to lock it. Not only does it cut off your access to the rest of the world, but your phone is the…

Scientists have created what they say is the world's most efficient lithium-sulphur battery, capable of providing power to a smartphone for five continuous days. The Australian developers say the battery, which uses low-cost sulphur in its electrodes, could also power an electric vehicle to drive more than 620 miles. The Australian researchers responsible have filed a patent for the technology, which could outperform leading battery manufacturers by more than four times if commercialised. Sulphur has great potential in battery technology due to its high energy density – lithium-sulphur batteries are capable of storing up to 10 times more energy than…