First, let me inform you that there are mobile phone holders with a suction cup and with a single or double clamp...
The single clamp ones do not have any adjustable arm and are also low-profile... the double clamp ones have a certain length of adjustable arm... it depends on what each individual has in mind to implement... Whether one is better than the other is a relative concept... Buyers should know that both single or double clamps can be used on both arms... and they should not rush when buying a mobile phone holder...

Disposable base that will break at some point and you will need another one for this reason and this price. I have changed 3. It suits me because it is flexible and easily rotates the phone in any direction. However, the worst downside is that you cannot place the phone while driving because it requires both hands to open it and with the other hand to put the phone in. And when it finally fits, it is not stable and moves during driving as the base extension is elastic. Overall, it's good for throwing away, but okay