The battery life result is based on an environment temperature of 25℃(77℉).

The battery capacity is greatly affected by temperature, lower the temperature, smaller the battery capacity.

When the device is in low network coverage area, it may take longer period or more times to establish the network connection. This may cause additional power consumption.

When the device is in low GPS signal area, it may take longer period to catch the satellites. This may cause additional power consumption.

The battery life result is under condition that the device takes 80 seconds to complete the boot up, positioning, registering to network then successfully sending the message.