1.download complex linux, busybox, vnc android ,terminal emulator from play store
2.download bt5 image .
3.now open busybox and install it.
4.open complete linux -> click on launch ->setting ->add the backtrack image ->launch it.
5. now choose vnc server ->yes and set the resoution and note the LOCALHOST NO.
6.Open vnc and enter
name: backtrack
pass:backtrac
address:127.0.0.1
port:590 and localhost num ie 0,1,2...
now press connect.