How to safely shut down or force shut down Elephone devices

Elephone S2 Plus Elephone S2 Plus
Elephone P6000 Pro Elephone P6000 Pro
Elephone Trunk Elephone Trunk
Elephone Q Elephone Q
Elephone M2 Elephone M2
Elephone Vowney Lite Elephone Vowney Lite
Elephone M1 Elephone M1
Elephone Ivory Elephone Ivory
Elephone S1 Elephone S1
Elephone P9000 Lite Elephone P9000 Lite
Elephone P9000 Elephone P9000
Elephone M3 (2GB) Elephone M3 (2GB)
Elephone M3 (3GB) Elephone M3 (3GB)
Elephone S3 Elephone S3
Elephone S3 Lite Elephone S3 Lite
Elephone C1 Elephone C1
Elephone R9 Elephone R9
Elephone S7 Elephone S7
Elephone S7 Mini Elephone S7 Mini
Elephone S7 Special Edition Elephone S7 Special Edition