Tecno 2ADYY-Y4 - System Configuration; Restore to Factory Default; Storage Settings; Language Settings

 Restore to factory default
Select "Settings"-Select "Backup & reset "-select "Factory data reset"-click
“Reset phone”
Storage Settings
Select "Settings"-"Select "storage and Menory"

Language Settings
Select the "Settings" - "language and input" - "select" language ", choose
to use in their own language