Do I need a dedicated GPS if my phone has GPS?

For serious backcountry hiking, yes. Dedicated GPS handhelds offer multi-day battery life, satellite connectivity without cell service, and rugged durability that phones can't match.

What maps come preloaded on hiking GPS units?

Most Garmin models include TopoActive maps with terrain contours and trails. Premium models add satellite imagery. You can also download additional maps for free via Garmin or third-party sources.

Best GPS Handhelds for Hiking 2026