Nowadays, people encounter a problem when Factory Reset Protection or FRP process takes place.
FRP is a special security measure introduced by Android operating system to prevent various illegal activities.
This feature is available in different versions : version 5.x; verision 6.x; verision 7.x , and the latest versions.
PRF lock only allows the real owner of the device to access and reset it.
Since alcatel one touch 4047f has the version 7, it is expected to be locked if you reset it using buttons ( volume plus and power button) or other methods
Watch the video bellow to use your phone again!