It wouldn't screw on at all and it wouldn't seal under the faucet, even with tightening with pliers, the sealing rubber was too hard. I had to change it and put another rubber that I bought from a store. The phone gets air from somewhere and when you close it, it loses water, so I have to leave it inside the sink. After some uses, the tightening on the faucet loosens and it needs to be tightened again with pliers. Okay, it's Chinese, but still I expected something better.

Good value for money. It helped me with a bathroom faucet that was very low to wash the baby and fill his bathtub. The build quality doesn't seem to be very high, but it does the job just fine for now. Practical and the adhesive keeps it in place like a shower.