When you turn of your phone, it tells the network first so the network won't go looking for it from a different tower than the last one pinged. If you pop the

When you turn of your phone, it tells the network first so the network won't go looking for it from a different tower than the last one pinged. If you pop the battery out, this doesn't happen, and the network isn't sure if your phone is connected to any network or not. These are things discovered during the recent bouts Ukranian of protests ... after all, some governments would very much like to know which of its citizens are participating in a protest. Recent Urkanian protests have helped shed light on these facts (along with revelations from NSA / CIA snooping). http://www.theguardian.com/world/2014/jan/21/ukraine-unrest-text-messages-protesters-mass-riot http://www.theguardian.com/world/2014/jan/21/ukraine-unrest-...