Most time, when your phone reaches someones hand,
the first place they go/visit are your files and this may
be very annoying, especially if it was accessed by an
unauthorized users.
.
Apart from using security codes for your memory card,
you can just try this other method! I will not advise
using security codes, especially if you use your memory
card on other devices!
.
Here is a very simple trick you can use to do such
“memory card hiding” . Your Memory card will still be
active and present on the phone, but it will not be visible
by anybody…
http://techfect.com/how-to-hide-your-memory-card-from-unauthorized-users-on-your-phone.html

With the help of Blue FTP?

With blue Ftp,does dat still exist,who stil use java phone in 2015,almost 2016,wen tecno have made life easier wit affordable android phone, op pls tell somtin new