Tesco Mobile sent a Samsung Galaxy S6 mobile phone 32.5km into the air last week.

No, it wasn’t a hunt for signal - but a competition in which Tweeters had to guess when the balloon lifting it would burst, with an S6 as a prize. People with hours of work time to waste (for Bogof it counted as research) watched it soar to the edge of space.

Remarkably, the phone was still working as it floated Earthward - though we’re not sure if it survived the car park crash landing. Hope that wasn’t the prize…