GPS and Cellular (LTE) communication are very power intensive. Every time your Fi Collar has to use GPS to locate your pup its battery takes a substantial hit. Weather conditions, surrounding geography and topography, trees, building... everything can make this operation more or less costly. The Fi Collar uses the very latest technology to try to minimize the energy cost of these operations - for instance we are the only smart collar using the AT&T low power LTE-CAT-M1 (LTE-M) Cellular network. We also use a lot of maths to try to anticipate the position of the GPS satellites in the sky - the less time your Fi Collar spends looking for satellites, the less energy it uses to acquire a location.
On the opposite - Bluetooth low energy (Bluetooth LE) uses very little energy to communicate. Devices can remain connected for a very long time and stay alive for months!
The Fi Team developed a mechanism by which the Fi Collar can use BLE to connect to the Fi Base or any Fi owner cellphone to report its position and relay information. This way whenever your pup is at home or with you on a walk, the Fi Collar can use this very low energy mechanism to communicate its data back to our servers, without having to use LTE or GPS.
To maximize the Fi Power Saving connectivity make sure you properly configure your Fi Base, have multiple Fi Base for your home if one is not enough to cover your property and install the Fi App on all the owners and dog walkers cellphones in the household (we built a nice invitation mechanism just for this). By doing this you will maximize the chances that the Fi Collar will always be in range of a BLE device and operate in power saving mode, keeping the valuable energy in the battery to power GPS/LTE if your pup ever runs away.