I have made my due diligence and reasonable price in purchasing these touchscreen stylus pens. I have a Samsung Galaxy S9 and a Tab A (2019) smartphone. ) tablet, both with protective screens. I wanted to be able to use pens when I was outside with gloves as it is very difficult to capture screen action with them. For S9 it works great. It offers just the right amount of power and sensitivity to detect when I want to scroll or tap an icon. I mainly use the much larger tip for daily work and video games and it is very responsive. The smaller end is more useful for fine drawing and tapping, but I rarely use it; However, it is still very functional. For Tab A, unfortunately, it is more successful. Using the same stylus works from time to time, but it's not as accurate or responsive. I'm not sure if this is related to the screen protector or the screen itself, but it's clearly not as good as the S9. I have two pens and several spare nibs, so I will definitely be happy with these pens for some time to come. - 4.5 stars out of 5