I’m going on a cruise in the summer and I want to take pictures underwater using my Iphone. I was googling around and found a few different types of allegedly waterproof bags on Amazon. Trouble is, a lot of their reviews are paid reviews which aren’t exactly reliable. Has anyone used one of these?

I’m also worried about how inexpensive they are. I know you get what you pay for and I can’t mess around with getting my phone wet.

If you’ve used these and they suck, is there a better way to take photos under water with a phone? Are there better waterproof solutions out there for an Iphone?

ETA: Should have been more clear, but I’m looking for solutions for using my phone. I’m not looking to get a disposable/digital camera.