This pen works great on my iPhone 12 screen. Very handy to use even without the battery. Slim and easy to keep in pocket or purse or in pen holder of phone or iPad case.

I didn't read the specs. Not compatible w/ my android. Works great as just a regular stylus.

Made a few minor tweaks after it slipped from my hands too many times and fell tip down on my back concrete stoop. And it wasn't serious damage but keep in mind the brass like tip is fragile . And on this one versus a grey Colored replacement I thought I needed the adjuster I couldn't really figure out proper replacement I didn't expect it all to just"¦ slip off. The gray one don't come off at all. You can see the nicks in the tip in the picture but the soft aluminum alloy allowed for a little misshaping to help snap it back together so all is well now . And the band I added to the charge port cap was because I lost two backs on the same steps. Luckily I know myself and bough a replacement pack when I ordered this. I just have a little of a hard time holding small objects with carple tunnel issues but I applied a little high heat automotive grade wire harness tape for grip in a sword style pattern "¦. Does me good now . I didn't even need the replacement but I kept it as a backup. With my hands , and as much as I like it more than likely I'll break it , and I'll buy 20 more lol. Not a bad product . However I have to note, bony fear of return if you dropped it tip down , it will in fact still function just make sure your screen has a solid enough protector , the tip damaged mine but it's thick few scratches I could handle if not the actual screen. That being said tho , it's even a soft yet hard enough material that I was actually able to use Jean material ( my pants) and gradually buff it back to roundness over a short time (very short ) it's like I didn't even drop it now . So I'm adding that mine seems to be pretty resilient even against me. The tablet I used it for"¦. Not as durable against me . But this still works to use the AutoDesk sketchbook on my iPhone XR still. Even with a smoke out screen protector that's thicker the the length of the tip , it still reached threw it to function 100%

Seems to work pretty well and MUCH less expensive that the Apple Pencil, if one is not doing fancy work!

The media could not be loaded. The beauty of this stylus is that I can see where the point is, unlike the standard passive (blunt nub) styluses.

I was a bit hesitant to buy because of a video someone made showing that they couldn't draw straight diagonal lines on an iPad. Well, you can, if you know how the tablet works in native Apple apps. (note I only have tried on apple screens: iPad mini 2, iPad gen 6, and iPhone SE).

With a powered stylus, the iPad screen tries to do a micro-snap-to-grid function. The slower you go on a diagonal, the more the iPad tries to hunt back and forth snapping to an internal grid. If you look close, you can see the line zig-zagging back and forth as you go. So you need to "stroke" quickly to get a straighter line and if you want an absolutely straight line, you need to pause at the end before lifting the stylus and it will "snap straight". (see video)
The same with a circle, very hard to draw an accurate circle "freehand" on a tablet although I can draw nearly perfect circles with pen on paper. But if you pause at the end of your circle on an iPad/iPhone, it will "snap it" to the nearest elliptical shape.

In the video, I have demonstrated how this works on an Apple device in the native Notes app. The snap-to-grid effect may not be present if you use an actual drawing app like Adobe. I also use a Sensu drawing brush sometimes, but without the Professional Drawing Apps, it doesn't work any better than the old school rubber nub stylus.
Side Note: The passive "nub" stylus on the other end of this stylus has a nice mesh rather than just vinyl like a cheap stylus.This mesh nub glides very smoothly over the glass.

In short - it doesn't do what an Apple pencil would do, but it's only a fifth of the price and makes it a lot more fun to draw with a tablet than a finger or generic nub stylus.