The Informer got a software update for his Nexus this week and the resulting tweaks to the interface led him accidentally to the data usage display. He was somewhat surprised to find that the second most data-hungry app on his phone was Google+, a service he has never used. Over a ten-day period Google+ huffed back 5.54MB of data over the mobile network, all of it in the background. This might not sound like much but it’s all relative; roughly one per cent of the monthly allowance, Google+ usage outstrips Facebook by some margin and leaves Gmail in the dust. And it’s worth repeating: This app has never been used.