Let me introduce my self, i am dion , indonesian. Some issue that my phantom 3 pro always lost signal in altitude 30 meters , before update dji go APP last week ago my drone can thouch in 150 meter altitude and the sinyal is always best no trouble, anyone can explain this issue?? Special for indonesian country. Big thanks all

May i know what mobile device and system version you are using?
The image transmission lost or RC signal lost when it reached 30 meters in altitude?
Please help clarify whether the firmware for aircraft and remote is up to date or not?