Add extra Physical button on iPhone

Different types of iPhone Button screen protector

HALO BACK is world's first smart screen protector for iPhone. It adds an invisible back button to iPhone and help one-hand operation. 

Price and availability

This NEW generation comes with better materials and improved performance. HALO BACK works perfectly with all iPhone 6 & 7 series.

Buy Now PureGear Smart+Buttons Glass Screen Protector - iPhone 6s Plus/6 Plus 

which has two button on it