I need to establish a Bluetooth connection with the sensor and maintain the connection with the sensor even in the background mode to continuously receive data. When I actually enter the background mode, the connection works well for 2 minutes, but after 2 minutes the connection is automatically disconnected. I searched and found that iOS automatically disconnects the Bluetooth connection between 1 and 3 minutes for battery efficiency, but is there no way to maintain the connection for more than 3 minutes?