Review on 📱 J&D Armband: The Perfect Sports Running Armband for Samsung Galaxy S10/S10e/S9/S8/S7/S7 Edge/iPhone X/Xs/8/7/6S/6 with Key Holder Slot & Earphone Connection by Scott Channell

The holder is quite reliable from a technical point of view (ie material, design, etc.). Keep in mind that the purpose of the product has some drawbacks. The S7 is a big phone and uncomfortable to carry. If you have significant muscle mass you will need to tie the retainer tightly to the non-activated muscles to keep it in place, which of course results in a tight fit each time the muscles are activated. However, it may not be easy to use the phone in the holder. I would recommend looking at other products at J&D Tech as construction is good but practicality is limited externally.