The Electroneum app will mine based on the CPU capacity of your phone – although it won’t actually use any CPU power to perform mining. The team has developed an algorithm that assigns your phone a mining rate based on the available CPU power.
The app will continually read the available CPU power on the phone and adjust the mining rate accordingly. Therefore, playing a CPU-intensive game will consume more CPU capacity on your device. This will result in less CPU power being available, and therefore the app will assign a lower mining rate to your phone.
It will, therefore, be best to terminate any unnecessary apps that may run in the background