Travelling with your phone

Hi all,

I’m planning my first solo trip and going pretty big .

I’m wondering how you handle your phone when you go scuba diving or going to the beach. So activities when it’s not directly on you.

And if you bring a backup phone. In case the first get stolen or something. In a friend group you can share resources, but I’m scared to be without a phone in a foreign country.

Also thinking about bringing the backup one to the beach and diving and keeping my first one in a hostel safe.

Would love to hearing from experienced solo travellers. I tried to look online but mostly found stuff about digital safety and backingup photo’s.