Yes, the width of the equipped mobile phone adapter can be adjusted to fit any type of mobile phone. 

Equipped with eyepieces: H6mm, H20mm The multiples are: 300/6=50 times, 300/20=15 times. If you choose a 3 times Ballov lens, the magnification is 50X3=150 times, 15X3=45 times; plus a 1.5 times orthographic lens, the imaging is a positive image, and the magnifications are: 50X1.5=75 times, 15X1. 5=22.5 times. Namely: minimum magnification: 15 times, maximum magnification: 150 times. 

Of course, the multiple is not the only one, it mainly depends on the comprehensive factors such as aperture and focal length. For example, if the windows of a house are large, the light will be natural and the view will be clear, the same reasoning. 

This telescope is suitable for children over 6 years old, astronomy beginners and adults.