The clip the connects to whatever surface you're clipping is pretty strong. Only downside is that it could be bigger.The clip that connects to your device? Close to garbage. All the pics of this clip holding a phone on a suitcase walking through an airport, while cycling, in a car, etc. are fictional. The phone will shimmy out of the weak clip with minor movements. This thing is good for stationary positioning only.NOW, if you have an XL sized phone, you have even more restrictions. This thing says it's compatible with iPhone Max and Samsung Galaxy S20+ Ultra - bull. I mean *technically* the clip can probably prop up your big phone in a position if it'll be somewhere where it won't move. But this is advertised as a sturdy dependable, stable phone holder? No.That pic of the lady watching something in bed while her phone is hanging over her head?? Not happening, unless you want a bruised forehead!I have a Samsung Galaxy S21 Ultra in a case.I attempted to clip this to the side of my flat screen monitor. Didn't work.I attempted to clip it to my laptop screen. Didn't work. Phone started sliding out and holder began shifting.I attempted to hold it upside down like the picture. Phone fell right out.Aside from the weak phone clip, this holder suffers from other design defects.The support for the back of the phone doesn't even make contact with your phone because the expandable bracket is in the way.Because of the bracket, your phone is angled away from the back of the holder. Because it's angled away from the back of the holder, 90% of the lip to support the bottom of your phone doesn't actually make contact with your phone.Also, the expandable bracket squeezes your phone to hold it 'securely' - to the side. This results in your phone's center of gravity being off. Up to half your phone has no lip under it whatsoever.Also, the lip is slightly curved, so it holds your phone at a slight angle. No matter what you do, you can't get it to hold your phone straight upright.I posted pics of all this do you can see what I mean. (Note: my pics are of an old Google Pixel phone. My S21 Ultra took the pics ?)I purchased one for my fiance and he loved it! This saved his hand and neck on our last trip to Vegas. I'm a headphones, crime podcast, shades, and travel pillow kind of gal....but he likes to watch movies. Even the Southwest Flight attendant was impressed and said "oh how cool, AMAZON?" I said you already know. Needless to say I purchased myself one as well. Funny story....we had them inside our carry on backpack this last trip we took and it was flagged by TSA..... they had no clue what it was. Fun times explaining the little gadget.I got this for the airplane because I travel so much - I attach to the seat in front of me or can place on seat tray if I’m in bulkhead. I always have someone ask where I got it.Loved this for setting up timed photos and watching movies on the plane!EXTREMELY durable! Well made and versatile! Adjustable to many different sizes and positions. Very handy and makes things MUCH easier that holding your phone for long periods of time.Genius idea, with airlines cutting comfort corners more and more yet raising their prices this is well worth it for some hours of comfort! Buying a few more for the family!It works.... BUT any movement on the plane and it move A LOT making it hard to watch a movie. It does not work with Allegiant or Southwest tray tables.Great for when you have kids on a airplane.