nowadays, the mobile setting is no more as the past days

evalee123

sorry, i cannot install the apk on my device, because nowadays, the mobile setting is no more as the past days, Settings > Applications > Unknown sources:

the above settings are no more appeared on our device., don't you know that ? ask more people 

i can only open the apk on my e-mail.

but now, i discover i cannot.

so what can i do ? please help

meoldTest

In the version I'm looking at it has been moved under Settings > Security > Unknown sources. So try looking there.

evalee123

What means version ?
Do you mean that in my device, the app has been moved under Settings > Security > Unknown sources ?
let me try