Why scene containing terrain is running slow in android device...?

Hello…, I am working on a game where scenes contains terrain.When playing on the unity it runs fine with no hanging…, but when build to my lenovo idea pad 1000, scene containing terrain is running very slow…Is it the problem with my scene design or tablet…If it is problem with terrain, please suggest me the way to smooth run of game in device…thank you…!

I’d think you need 1) new Ram, or 2) a new Hard Drive or last 3) a new CPU. when i say new i mean better :wink:
when this turns out to work please vote my answer up