It is possible that the Skype iPhone app causes rapid battery drain? This morning I arrived to work and left my 16MB iPhone 5 in the locker with about a 98% charge remaining. Five hours later, the battery was showing only 37%. Usually, its down to no less than 90% at the same time. However, I noticed that I had two missed LTE calls (no wi-fi here) on Skype. I wonder if the missed called started some Skype process that used a lot of juice. Anybody have a similar experience?