Matone Phone Armband, 360° Rotatable Running Phone Holder, Compatible with iPhone 11/11 Pro Max, Galaxy Note 10 Plus/S20, Universal Adjustable Arm Band for Jogging Gym Hiking

I'm a petite person, so this armband was not the most fitted for me. The strap width was almost the length of my whole upper arm. Would not recommend to petitie people, but the quality is good. I gave it to my dad who has longer arms than I do. Looks like it would last a while.

Is it just me or is this package lacking something? It seems like the component to attach the phone to the band is missing... specifically the item on the manual in the second picture?