And this has to be done every single time you are flying the drone. Every time that the drone is going to be used it needs to be checked. Use apps A lot of companies offer an app for smart phones that help pilots control their drones.
If you have it, then it is very likely that the app has an option to help you calibrate your drone. This is a great tool to make sure that the parts are working correctly and you can go flying your drone without any worries.