Solution
Please refer to the information below for the smartphone (or other device) OS versions and other specifications which allow connecting your smartphone (device) to the camera wirelessly (as of November 2019).
Supported OS
iOS 13.1/12.4/11.4/iPadOS 13.1
Bluetooth
To connect via Bluetooth, a Bluetooth-equipped camera and a Bluetooth 4.0 or later-equipped device (supporting Bluetooth low energy technology) is required.
Camera Connect for Android
Supported OS
Android 10.0/9.0/8.1-8.0/7.1-7.0/6.0/5.1-5.0
Bluetooth
To connect via Bluetooth, a Bluetooth-equipped camera and a Bluetooth 4.0 or later-equipped device (supporting Bluetooth low energy technology) compatible with Android 5.0 or above is required.
NFC
To connect via NFC, an NFC-enabled camera and an NFC-enabled device is required.