By Mariam Khan While many of us are glued to our phones for several hours a day, there are still several mysteries about our devices we don’t have answers for – so how well do we really know our phones? Many won’t know that even when apps are not being used, your phone can track and collect your data without your knowledge – but there’s a way to stop it from happening. You probably have ten, twenty, or even thirty apps on your phone, and the likelihood is that many are unused. The translation app you intended to use on holiday but never got around to opening is still sitting there, and the ‘on…