Can You Bring Your Phone In A Sauna? Here’s What Experts Suggest

Ever headed into the sauna and wondered, “Should I bring my phone in just for a few minutes?”

Well, it’s not just you. 

In fact, be it for music, podcasts, quick scrolling, or just to keep an eye on important things, there are many reasons to carry your phone to the sauna. 

But here’s the thing: Saunas and smartphones don’t really mix well. That’s because between the extreme heat, high humidity, and sensitive electronics, you could be doing some serious (and expensive) damage. 

Now, I am sure you might be curious what really happens to phones in saunas, what the risks are, and what safer options you can use instead. 

So before you step in with your phone, read this guide on whether or not can you bring your phone in a sauna where I’ve detailed everything. 

Let’s get started.
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Key Takeaways

• Phone temps max at 95°F; sauna temps soar to 212°F.
• Heat wrecks batteries, internals, screens; moisture adds corrosion.
• Even worse: etiquette slip-ups, banned devices, disturbance risk.
• Instead: use simple gear or embrace a phone-free soak.

• Avoid bringing your primary phone into the sauna.
• If needed, leave it just outside the door or floor-level.
• Preferably, use a music player, sauna timer, or Bluetooth speakers outside.
• Respect privacy rules—no photos, no videos, and no disruptions. 
• ​Most of all: Unplug and enjoy that sweet, tech‑free steam time.

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Can you bring your phone in a sauna or not?

Sauna-goers often ask me this one question: Can I bring my phone in the sauna? 

And the short answer is yes you can. 

But then, you really shouldn’t bring phone in sauna. 

Why? 

Well, it might seem harmless to bring your phone into the sauna to listen to music, check those important emails, or simply stay connected. And there’s nothing wrong with it. 

However, the extreme heat and humidity are super tough on all electronics, including your phone. 

Worse, while saunas can be as hot as 150°F, most phones aren’t even built to handle temperatures above 95°F. 

So, even if your phone works at first, it’s slowly taking damage every minute it's in there. And it’s best to leave it outside and enjoy a little screen-free relaxation instead.
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Why can’t you bring phone in sauna?

Now that you know phones are a big no in the sauna, you might be curious why you should leave your favorite gadget behind. After all, phones are built to be tough and they stand a lot of extreme temperatures out there. 

To begin with, let me tell you that phones are not built for everything, especially not the extreme environment inside a traditional Finnish sauna. 

Meaning although saunas feel amazing to us, they’re more like a torture chamber for your phone. 

Here’s how the domino effect of heat and humidity takes a toll on your phone:

A. Heat

Your smartphone, whether it's an iPhone, Samsung, or any other brand, has a safe temperature range where it works best. And this is usually up to 95°F while you’re using it, and up to 113°F if it’s just sitting there or turned off. 

But once it gets hotter than that, your phone starts to get damaged in some way or the other.

Now, let’s compare that to the heat inside a sauna. 

The average temperature in a dry sauna usually ranges from 158°F to 212°F. That’s more than double your phone’s comfort zone. 

Also, with a temperature range of 158°F to 194°F, steam saunas aren’t far behind either.

Plus, they’ve got the added challenge of heavy moisture in the air.

So what happens when your phone is exposed to that kind of heat? 

Well, first it tries to protect itself by slowing down or shutting off completely. But if you keep bringing it in there regularly, the internal components like battery, CPU, screen, and adhesives holding it together start to break down.
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B. Humidity

A lot of phones today are marketed as “water-resistant,” which sounds great at first. But here’s the thing: Those water resistance ratings are usually tested in controlled environments, like a shallow dip in freshwater or a splash at the pool. 

And they’re not meant for the steamy and sweaty sauna air that’s nearly 100% humid. 
Here, the moisture can sneak into your phone through tiny openings, especially as the heat causes seals to expand. 

Once inside, it can cause condensation, which leads to corrosion of the internal circuits or even short circuits. Basically, even if your phone looks fine on the outside, it could be slowly getting damaged where you can’t see it.
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What happens if you take your phone in the sauna?

Alright, so we’ve already talked about whether or not can you take your phone in a sauna. Also, we saw how saunas get way too hot and humid for smartphones. 

But what actually happens if you bring your phone in there anyway? 

Think of it like this: You’re slowly roasting your phone like a marshmallow over a campfire. Sure, it might last for a little while, but eventually it will give up.

Here’s how:
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A. Thermal throttling and shutdown

Phones come with internal sensors that monitor their temperature in real-time. And if your phone starts getting too hot, anywhere in the range of 95°F to 104°F, it'll try to protect itself. 

It does so by slowing down, freezing apps, or even stopping you from using it.

You might see a message pop up saying something like, “iPhone needs to cool down before you can use it.” That’s your phone waving a white flag.

Now picture that happening inside a 160°F sauna. 

In most cases, the phone will shut down completely after a few minutes just to avoid frying its internal parts, and you’ll end up staring at a dead screen.
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B. Battery damage

Here’s where it gets risky. 

Your phone uses a lithium-ion battery, which is super sensitive to heat. And high temps, like what you find in a sauna, can cause the battery to break down faster. Meaning it won’t hold a charge like it used to.

At first, you’ll notice your phone dies quicker. Then, over time, the battery might swell, leak, or in rare cases, even catch fire.

For instance, a bather who took their phone in the sauna claimed on Reddit, “I totally ruined my phone’s battery by bringing it in the sauna… needed to get a new phone.”

This is exactly why electronics manufacturers always warn against leaving your phone in the heat.
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C. Screen and internal damage

It’s not just the battery that takes a hit as the screen also starts acting up. 

You see, extreme heat causes your phone’s display to warp, turn yellow, or even detach slightly from the frame if the adhesive starts to melt. So, you might notice weird flickering, touch sensitivity issues, or dead zones on the screen.

In fact, it gets even worse inside your phone as things like glue, solder joints, and tiny plastic components start to soften or shift out of place. 

These are the parts that hold your phone together and keep it working smoothly. And once they’re damaged, there’s no easy fix. 

The worst part? 

A lot of this damage happens slowly. Meaning your phone might seem okay at first, but then start having problems days or weeks later.
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D. Moisture invasion

Lastly, saunas, especially steam saunas, are packed with wet and heavy air. And even if your phone is rated water resistant, that doesn’t mean it’s steam-proof. 

Here’s what happens: When you bring your phone into the sauna, condensation forms inside the phone as it moves between hot and cold temperatures. This moisture sneaks into all the tiny openings and sits on your phone’s circuit boards. 

As a result, your phone’s components might have corrosion, short circuits, or both. And once that damage is done, it might just stop working completely.
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Damage and risk level when you use your phone in sauna

Here’s a simple chart to break down the most common types of damage your phone can suffer in a sauna, along with how likely they are to happen:
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Damage Type	Risk Level	What It Means
Overheating & Shutdown	🔥 Almost Certain	Your phone will likely shut itself off within minutes to avoid internal damage.
Battery Capacity Loss	⚠️ Very Likely Over Time	Repeated heat exposure degrades the battery. Expect shorter battery life fast.
Screen/Internal Warping	⚠️ Moderate to High	Heat can cause your screen to lift, glue to melt, and components to deform.
Moisture/Steam Damage	💧 Moderate to High in Steam	Humidity sneaks inside, causing corrosion, condensation, and circuit damage.

But can you bring your phone in a sauna if you really need to?

In a perfect world, we’d all leave our phones in the locker and drift off into a peaceful tech-free steam session. 

But sometimes it might be absolutely necessary for you to use your phone. 

Now, if you have to bring phone in sauna while still using the sauna properly, here are some safer ways to go about it:
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A. Keep it nearby but not in the heat

If your phone needs to be close by, maybe for emergency alerts, childcare apps, or gym notifications, you don’t actually need to take it all the way inside with you.
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Here’s a popular trick I suggest you follow:

• Leave it near the door: Find a cooler spot, like right outside the sauna or on the floor near the entrance. 
• Use an insulated lunchbox with an ice pack: Several Reddit users swear by tossing their phone in a small cooler bag with a reusable ice pack inside. It won’t keep it frozen, but it helps keep the temperature from spiking too fast while the phone is nearby.
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B. Use alternative devices for music or meditation

Your sauna time is your self-care ritual and you might want to zone out, breathe deep, and enjoy a calming playlist or guided meditation.
 
Totally fair!

But instead of risking your $1,000 smartphone, try one of these safer options:

• Throwaway MP3 player: Yes, they still exist! You can grab a basic one online for under $20. Load it up with music or meditation tracks and you’re good to go. If it dies from the heat eventually, it’s no big deal to replace.
• Bluetooth speakers outside the sauna: Leave your phone outside, then connect it to a speaker just outside the sauna door. Many Bluetooth speakers are loud enough to be heard inside, and you won’t be risking your phone at all.
• Use built-In sauna speakers (if available): Some gyms and spa facilities have built-in sound systems where you can plug in your tunes. Ask at the front desk, they might already have a setup for relaxing soundscapes or quiet music.

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C. Get sauna-safe phone pouches

You might have seen ads for “sauna-safe” phone bags, like the Boundless Sauna Bag and similar products. These are usually heat and water-resistant pouches that claim to protect your phone during your sweat session.

But there’s a catch: They mostly insulate your phone. Meaning they trap heat inside rather than keeping it cool. 

So while they might work for a quick 5–10 minute session, they’re not ideal for longer stays.

Frequently asked questions

Can you bring your phone in an infrared sauna?

Infrared saunas do run cooler than traditional ones, usually between 120°F to 160°F. That might seem like it’s safer for your phone and it is a little less harsh than a regular sauna.

But then this temperature range is still way above your phone’s safe operating limit, which tops out around 95°F to 113°F. 

So even in an infrared sauna, your phone can still overheat, shut down, or slowly get damaged over time.

What about using a waterproof case or pouch?

Waterproof sounds helpful, right? 

But there's a big difference between waterproof and heatproof.

Most phones today are rated “IP68,” which means they can survive a dunk in fresh water for a short time. That’s great for showers, pools, or beach trips. 

But in a hot, steamy sauna, it’s a totally different story. Here, the heat causes seals and adhesives to break down faster and steam can sneak in where water normally wouldn't.

So, if you’re thinking of using a waterproof pouch or case, remember they protect against splashes and not high temperatures.

Can you take your AirPods or Apple Watch in the sauna?

Unfortunately, these little devices aren’t safe in the sauna either.

Even though they’re small and seem durable, they have the same type of lithium batteries and internal electronics as your phone. Heat and humidity can cause them to overheat, shut down, lose battery health, or just stop working altogether.

Moreover, people have reported their AirPods acting glitchy or not charging after sauna use, and Apple Watches giving warning messages or screen discoloration from heat exposure.

​So, leave the tech accessories outside too. You don’t want to lose your $250 earbuds.

My phone shut down in the sauna, will it be okay?

Short term? Probably.

Most phones are designed to automatically shut down when they get too hot to protect themselves from damage. 

Once your phone cools down, it’ll usually turn back on like nothing happened. But repeated overheating causes long-term wear.

That means things like:

• The battery starts holding less charge.
• The screen gets less responsive.
• The phone slows down over time.

So even if it comes back to life, your phone is still taking damage every time it overheats.
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How long does it take for a phone to get damaged in a sauna?

Surprisingly, not long at all.

Just 10 to 15 minutes in a hot, humid sauna can be enough to start stressing your phone’s battery and internal parts. And if you do this regularly, it’s like slow-cooking your phone a little bit each time.

One or two short visits might not kill it. But keep doing it, and your phone will absolutely start showing signs of damage. 

So unless you're okay with replacing it sooner than expected, it's not worth the risk.
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Final words

By now, you know for sure whether or not can you bring your phone in a sauna.

You know the risks to rewards ratio of having your phone in there. And that’s exactly why I suggest you don’t bring your smartphone into the sauna as you’re risking expensive damage with minimal benefit.

More so since better options like timers, outsider speakers, and music players exist. 
In fact, as a sauna enthusiast here’s how I go about it, something you can too:

• I leave my phone in the cool hallway for easy sound/alerts minus risk.
• I use a timer or sauna-specific clock for safe timing.
• If I want music, I bring a $15 MP3 player. It's tiny, rugged, and replaceable.
• I soak in the heat fully focused, no screens, no pings, just steam and serenity.

Got more questions or need to get a sauna installed in your home?

You can get in touch with us!

At Steam & Sauna Experts, we are seasoned sauna installation experts with a decade plus expertise installing the best-in-line saunas across Florida. Also, our online storefront features the best sauna accessories from industry-leading manufacturers like Steamist, Amerec, Mr. Steam, and more. 

And we’ve got all your sauna needs covered on a budget.​