Which smartphones are compatible with the Appels 4G (VoLTE) service?

The following smartphones are compatible with the Appels 4G service:

Apple:

• iPhone XR
• iPhone Xs/Xs Max
• iPhone 11, 11 Pro and 11 Pro Max
• iPhone SE
• iPhone X
• iPhone 8 and 8 Plus
• iPhone 7 and 7 Plus
• iPhone 6S and  6S Plus
• iPhone 6 and 6 Plus
• iPhone 12 Mini, 12, 12 Pro and 12 Pro MAX
• iPhone 13 mini, 13, 13 Pro and 13 Pro MAX

Samsung:

• Samsung Z Flip
• Samsung Z Fold 2
• Samsung Galaxy Note20 and Note 20 Ultra
• Samsung Galaxy Note10 Lite
• Samsung Galaxy Note9
• Samsung Galaxy Note8
• Samsung Galaxy S21, S21+ and S21 Ultra
• Samsung Galaxy S20 / S20+ and S20 ultra
• Samsung Galaxy S20FE
• Samsung S10, S10+, S10e and S10 Lite
• Samsung S9 et S9+
• Samsung S8 et S8+
• Samsung Galaxy S7, S7 Edge
• Samsung Galaxy A20e
• Samsung Galaxy A02s
• Samsung Galaxy A12
• Samsung Galaxy A21s
• Samsung Galaxy A32
• Samsung Galaxy A40
• Samsung Galaxy A41
• Samsung Galaxy A42
• Samsung Galaxy A50
• Samsung Galaxy A51
• Samsung Galaxy A52 
• Samsung Galaxy A71
• Samsung Galaxy A80
• Samsung Galaxy A6 and A6+
• Samsung Galaxy A5 2017
• Samsung Galaxy Xcover Pro
• Samsung Galaxy Xcover 4S
• Samsung Galaxy Xcover 5

Huawei:

• Huawei P30 Lite (previous version and New Edition)
• Huawei P40 and P40 Pro
• Huawei Mate Xs
• Huawei PSmart 2019
• Huawei P30 and P30 Pro
• Huawei Mate 20 and Mate 20 Pro

Others:

• Oppo Reno 6 and 6 Pro
• Oppo Reno 4 Pro
• Oppo Find X3 Pro
• Oppo A94
• Caterpillar S42
• Caterpillar S62 Pro
• Caterpillar S52
• Caterpillar S61
• Caterpillar S31
• Caterpillar S41
• Xiaomi 11 T
• Xiaomi 11 T pro