DIAGNOSIS Intermittent disconnects are almost always a weak or unstable Wi-Fi signal at the camera's location.
FIX Check the camera's RSSI (signal strength) in the app under Device Info. If it's below -70, your connection is poor. Relocate the camera closer to your router or install a Wi-Fi extender on the 2.4GHz band.
IF THAT DIDN'T WORK Your router might be aggressively kicking devices. Try assigning a static IP to the camera in your router settings to prevent conflicts.
HEADS UP The v3 is 2.4GHz only. If you have a dual-band router with a single SSID, your phone might be on 5GHz causing you to misjudge the signal. Force your phone to 2.4GHz to test.