I’m using a iPhone 15 Pro Max with Apple silicone case. I purchased 2 Pocket Tripods, one for my car and the other for around the house. I’ve found them to be less than stable. When the phone is installed on them, the curved pieces that hold the phone in place press hard on the screen protector and allow air to get underneath it. I can smooth it out and remove the air but the protector still has tiny air pockets in it. Using them in portrait mode is not good. Phone has to be on very level ground. Landscape mode gives more flexibility. I like the concept and the folks at Pocket Tripods have been very helpful trying to get my tripods to work right. Does anyone have experience with these and advise to make them work right?