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Up to 2 days battery life
During battery performance testing conducted in September 2014 in a laboratory under active use conditions reflective of the Typical Smartphone User by Sony Mobile Communications Inc., the E3 lasted at least 48 hours on average until battery exhaustion.
Battery performance testing reflective of a Typical Smartphone User usage profile involved using the device for approximately 5 hours in a 24-hour period, for a range of typical usage scenarios (calling, texting, web, social networking, games, camera, music and video). Default settings were applied for the device during battery performance testing including display brightness of 100 Nits and Battery stamina mode off