How to choose a GPS device
The characteristics and capabilities of a GPS device.
Are you interested in using a GPS device for your outdoor activities such as walking, running or cycling but of where to begin? Our GPS guide examines various features and functionalities to assist you in selecting the most appropriate GPS device for your needs, making your outdoor activities more enjoyable, safer and easier.
GPS technology has become ubiquitous, with most phones and even some watches now equipped with GPS chips. These devices offer a range of functions, including position tracking, route following, and activity recording.
The Ordnance Survey has created a guide to help you select a handheld GPS device for outdoor activities. The guide begins by addressing whether you require a GPS and its potential uses, followed by an overview of the available.
GPS device features and functions
GPS devices offer a variety of functions that cater to different activities. To determine which ones you require, consider your planned activities. Below is a list of available technologies and their potential uses.
GPS position
Most GPS devices report latitude and longitude, but some provide additional information such as OS grid reference, altitude, and distances to the next waypoint. Higher-priced GPS units tend to offer more precise results in challenging environments, such as near buildings or in ravines. Phone-based GPS can estimate your location based on nearby mobile phone towers or WiFi, but it may not always be accurate, so it's best to confirm location using a visible feature.
GPS, GLOSNASS & Galileo
Different GPS systems are operated by the US, Russia, and the EU, and their signals are accessible to anyone with the appropriate hardware. Having access to multiple networks can be beneficial in certain situations, such as GLOASS being more effective in northern latitudes. The primary advantage of using two or more networks is a quicker lock-on time or a higher likelihood of obtaining a position when the sky is partially obstructed. However, using more than one network does not significantly improve accuracy and may consume more power, resulting in a slightly shorter battery life.
Screen
Make sure to have appropriate maps available on your screen device that match your location and interests For better visibility in sunlight, choose a transflective screen that reflects natural light. A backlight can improve readability in daylight and enable usage in the dark. However, brighter screens may drain the battery faster. Additionally, consider the display resolution, as higher resolutions display more map details.
Route recording
Recording your route enables you to revisit and distribute it later, which is useful for resolving disputes about distance and elevation. If your device has GPX export, you can share it as a file with others, making it easier for them to follow your path. Almost all GPS devices have this feature, and those with additional sensors, such as heart rate, can also record and export this data as FIT files that include both route and other information.