How to protect electronics on a beach holiday/vacation [closed]

In a world full of personal electronics from mobile phones to cameras, does anyone have ideas to keep them safe from water and sand on seaside holidays? That is, besides:

Not bringing them (can't live without them)
Getting a friend to watch them (everyone in the party wants to swim)
Locking them in a rental car (generally not advised)
Leaving them unguarded in a box (someone may steal them)
Getting waterproof versions (bad value for non-holiday use)

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How to protect electronics on a beach holiday/vacation [closed] - GoPro Karma Controller

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How to protect electronics on a beach holiday/vacation [closed] - Contemporary creative beach guard house constructions located on sandy seashore on clear sunny day

Where can you hide your phone at the beach?

If you have electronics place them in a large zip-lock style bag and bury it, then cover with a beach towel. The bag protects the electronics from the sand. If you do this, make sure the bag is completely sealed. We like weather and water-proof cases specially designed for 100% protection against water and sand.

How can I protect my computer from the beach?

Protect your devices from sand and fine dust that can scratch glass panels. Use a case that covers the device completely, or zip it inside a plastic bag for safekeeping and easy access. Keep air holes covered near sand, dirt, and dust that can enter and clog cooling systems.

Should I bring my phone to the beach?

Keep it Cool If you have an Apple device, it will give you a warning that your phone or tablet may begin to overheat once it hits around 90 degrees Fahrenheit. The best way to prevent this is to store the device out of direct sunlight in a shady spot, like under a beach umbrella.

How can I protect my phone from the sun?

So try to take it easy on your phone when you're having fun in the sun. Shut down any apps you don't need and limit your use of high-intensity programs such as the camera or games. Also, turn down your screen brightness and switch to airplane mode to conserve power and keep the battery running cooler.

How to keep your stuff safe while you swim | Beach Hacks for Solo Travelers

Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.

Images: Tatiana Syrikova, Erik Mclean, Charl Durand, Gen Colorist