The upcoming update includes: a fix for the Mobile Hotspot feature, improvements in Mobile Hotspot security, updated VZ Navigator, Visual Voice Mail updates, V Cast App preloaded on the phone, MotoCast installation steps simplified, improved stability of data connectivity after
Airplane mode is disabled, improved data throughput performance in low - signal 4G environments, improved battery life when using Phone Book Access Profile Bluetooth headsets, successfully save multimedia ringtones, favorites contact widget updated, improved device stability when moving
between home screen panels, email icon updated, OTA updates show correct remaining download time and Commercial Mobile Alert Service feature has been added.
But if you work out and use LTE the way Apple intends it (AKA let your Apple Watch decide when it hops
between networks, rather than forcing your iPhone into
Airplane mode), you should easily get similar battery life to the Series 2.