Last weekend, I ended up mingling with some of the craziest people in the world and joined them for an afternoon of cliff diving. We all climbed up a high cliff and started to jump into the calm lake below one by one. It was scary at first, but I enjoyed it so much in the end. When I was standing on the top of the cliff, I thought about how high I am from the ground. I soon figured out that actually the small GPS device inside your Android smartphone can tell you your altitude using the data received from the GPS satellites.
Your altitude is your height from the ground. For various reasons you may want to know how much high above the ground you are. In order to find this information, you can use a third party app called GPS Test. This app fetches information from GPS satellites like your latitude, longitude, time, speed and the altitude.
After installing the GPS Test app in your Android phone, you should enable the Location in the Android settings and change its setting to High Accuracy. Now you can launch the GPS Test app and wait for it to connect to the GPS satellites. You must have a clear view of the sky for better accuracy. When the GPS Status turns into 3D Fix, you can touch the numeral 0 at the bottom to open the screen where it will display you the altitude in feet.
Conclusion: Finding the your altitude does not requires any specialized or costly GPS device. You can use your Android smartphone to fetch all the GPS information including the altitude in terms of feet.
You can get the GPS Test for Android from https://play.google.com/store/apps/details?id=com.chartcross.gpstest.