Instructions to delete a language to Allview devices

Allview X2 Soul Style+ Allview X2 Soul Style+
Allview A7 Lite Allview A7 Lite
Allview A6 Lite Allview A6 Lite
Allview Viva Q8 Pro Allview Viva Q8 Pro
Allview Viva H7 Xtreme Allview Viva H7 Xtreme
Allview Viva H7 Life Allview Viva H7 Life
Allview Viva H10 Allview Viva H10
Allview V1 Viper Allview V1 Viper
Allview P9 Energy Allview P9 Energy
Allview P7 Seon Allview P7 Seon
Allview X1 Xtreme Mini Allview X1 Xtreme Mini
Allview Viper i V1 Allview Viper i V1