Here you can find instructions to make video calls on Apple devices

Apple iPad 9.7 Apple iPad 9.7
Apple iPad Pro 10.5 Apple iPad Pro 10.5
Apple iPad mini Wi-Fi + Cellular Apple iPad mini Wi-Fi + Cellular
Apple iPad 2 Wi-Fi + 3G Apple iPad 2 Wi-Fi + 3G
Apple iPad 3 Wi-Fi Apple iPad 3 Wi-Fi
Apple iPad 3 Wi-Fi + Cellular Apple iPad 3 Wi-Fi + Cellular
Apple iPhone 4 CDMA Apple iPhone 4 CDMA
Apple iPad Wi-Fi + 3G Apple iPad Wi-Fi + 3G
Apple iPad 4 Wi-Fi Apple iPad 4 Wi-Fi
Apple iPhone 3GS Apple iPhone 3GS
Apple iPhone 3G Apple iPhone 3G
Apple iPhone Apple iPhone
Apple iPad 9.7 (2018) Apple iPad 9.7 (2018)
Apple iPad mini Wi-Fi Apple iPad mini Wi-Fi
Apple iPad Pro 12.9 Apple iPad Pro 12.9
Apple iPhone 5c Apple iPhone 5c
Apple iPod touch Apple iPod touch
Apple iPod touch 5th generation Apple iPod touch 5th generation
Apple iPad Air Apple iPad Air
Apple iPad mini (2019) Apple iPad mini (2019)