While there can be a number of causes, the most common issue is that the Android device is trying to be smart and because the CamRanger network doesn’t have Internet access, it automatically tries other WiFi network or the cell network. This can be changed through a setting, typically called “Auto network switch”, that needs to be turned off. It can be accessed under WiFi settings and then selecting Advanced within the menu. In Advanced there is an option labeled Auto network switch. Make sure that is unchecked.
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