FAQ

How can I use mobile data together with a WLAN connection, for usage of the GPS map?
Go to developer options and activate "Mobile data always active"

I can connect with the Master and send messages to the system but can not receive any?
Make sure you set the ROS environmental variables on the host system properly:

export ROS_IP=SYSTEM_IP
export ROS_MASTER_URI=http://$ROS_IP:11311
export ROS_HOSTNAME=$ROS_IP

I have problems to receive data while I am using the WiFi hotspot of my Android device?
Make yure you set the ROS environmental variables on the robot as follows:

export ROS_IP=robot_IP                       (For Android devices this should be something like 192.168.43.???)
export ROS_MASTER_URI=http://$ROS_IP:11311
export ROS_HOSTNAME=Cellphone_IP             (For Android devices that should be 192.168.43.1)