01
Weight
A phone with an offline map app can replace a dedicated GPS unit and weighs nothing extra. But battery life and durability matter. A compass weighs under an ounce and never runs out of battery.
02
GPS vs Phone vs Paper Map
Dedicated GPS devices (Garmin inReach) have better battery life and satellite communication. Phones with apps like Gaia GPS or AllTrails work great but drain battery. Paper maps are ultralight backup that never fails.
03
Satellite Communication
Devices like the Garmin inReach Mini provide SOS capability and two-way messaging anywhere on earth. If you hike solo or in remote areas, satellite communication could save your life.
04
Battery Life
GPS devices last 20-100+ hours. Phones in airplane mode with GPS last 8-15 hours. Carry a power bank for multi-day trips. Plan your power budget before you leave the trailhead.
05
Reliability
Electronics fail — screens crack, batteries die, water gets in. Always carry a basic backup: a compass and the knowledge to use it. Redundancy in navigation is cheap and potentially life-saving.