hello, I tell them my problem.
when I press 'build and run' occurs following error in unity 3d:
Warning! Using more than 1 pixel lights on a mobile device may decrease performance severely. You can change the mobile quality settings in 'Project Settings -> Quality Settings'.
Not that this error is because since I have changed cofiguraciones but nothing seems to work. I have android 2.3.7, if anyone could help I would appreciate it too.