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Can I leave a TV in the car overnight?

If your iPhone or iPad gets too hot or too cold

Use iOS and iPadOS devices where the ambient temperature is between 0º and 35º C (32º to 95º F). Low- or high-temperature conditions might cause your device to change its behavior to regulate its temperature. Using an iOS or iPadOS device in very hot conditions can permanently shorten battery life. Store your device where the temperature is between -20º and 45º C (-4º to 113º F). Don’t leave your device in your car, because temperatures in parked cars can exceed this range.

Your device might get warm

  • Set up your device the first time
  • Restore from a backup
  • Wirelessly charge your device
  • Use graphics-intensive or processor-intensive apps, games, or features, including augmented-reality apps
  • Stream high-quality video

These conditions are normal, and your device will return to a regular temperature when the process is complete or when you finish your activity. If your device doesn’t display a temperature warning, you can keep using your device.

If your device gets too warm

iOS and iPadOS devices have built-in protections to prevent overheating. If the interior temperature of your device exceeds the normal operating range, your device will protect its internal components by attempting to regulate its temperature.

Avoid these conditions and activities because they might change the performance of your device:

  • Leaving your device in a car on a hot day.
  • Leaving your device in direct sunlight for an extended period of time.
  • Using certain features in hot conditions or direct sunlight for an extended period of time, such as GPS tracking or navigation in a car, playing a graphics-intensive game, or using augmented-reality apps.

If the interior temperature of your device exceeds the normal operating range, you might notice these changes:

  • Charging, including wireless charging, slows or stops.
  • The display dims or goes black.
  • Cellular radios enter a low-power state. The signal might weaken during this time.
  • The camera flash is temporarily disabled.
  • Performance slows with graphics-intensive or augmented-reality apps or features.
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Additionally, if you’re navigating, your device might show this alert and turn off the display: «Temperature: iPhone needs to cool down.» Navigation still provides audible turn-by-turn directions. When approaching a turn, the display will illuminate to guide you through the turn.

If your device gets too cold

Using an iOS or iPadOS device in very cold conditions outside of its operating range might temporarily shorten battery life and could cause your device to turn off. Battery life will return to normal when you bring your device back to higher ambient temperatures.

Your iOS or iPadOS device might not charge or could stop charging if it gets too cold.

If a Charging On Hold notification appears

With iOS 16, charging is put on hold when your iPhone becomes too hot or too cold to charge. This message appears on your Lock Screen and in Settings > Battery: «Charging On Hold. Charging will resume when iPhone returns to normal temperature.»

To resume charging your iPhone as quickly as possible, move it to a cooler or warmer location, or if your iPhone is in use, put it to sleep.

iPhone lock screen with the Charging On Hold notification

If a temperature warning screen appears

If your device exceeds a certain temperature threshold, it will present a temperature warning screen similar to this:

Image shows temperature warning.

An iPhone showing this message might still be able to make emergency calls.

To resume use of your device as quickly as possible, turn it off, move it to a cooler environment (away from direct sunlight), and allow it to cool down.

If a Restore Paused notification appears

If your device exceeds a certain temperature threshold while restoring from an iCloud backup, your restore might pause temporarily. This message appears: «Restore Paused. Restoring from iCloud will resume when this [device] cools down.»

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This pause keeps your device within an acceptable operating temperature. Your restore will resume when the device cools down.

About the safety standards

iOS and iPadOS devices comply with the safety standards for Safety of Information Technology Equipment, IEC 60950-1 and IEC 62368-1. Many countries and regions have adopted these safety standards:

  • UL 60950-1 in the United States
  • CSA 60950-01 in Canada
  • EN60950-1 in Europe
  • AS/NZS 60950:1 in Australia and New Zealand.

How Does Cold Affect CRT Televisions?

Old CRT televisions can survive storage in freezing conditions.

Like most electronic devices, televisions do best when kept at moderate indoor temperatures, without exposure to extremely hot or cold weather. However, it may be necessary to transport your cathode ray tube, or CRT, television during cold weather while moving, or store it in a unit without climate control. CRT televisions and computer monitors are relatively durable objects, and can withstand even freezing temperatures if cared for properly.

Viewing Problems

  1. CRT televisions actually run surprisingly well in cold weather; some sets will even work outside during the winter. However, operating a cold cathode ray tube can cause some viewing problems. The tube may respond sluggishly or show interference and visual artifacts until it warms up. Avoid using your CRT television in cold temperatures unless the TV is well-protected from moisture and rated for use when cold.


  1. While a CRT television can be stored or transported in cold weather, you should never use it while it’s cold. Instead, allow the television to sit indoors at room temperature for several hours or even overnight. This ensures that all components have come to the same temperature before you turn the television on. Using it at room temperature reduces the chance of permanent damage from excessive cold.


  1. Moisture introduced by condensation from the air actually poses a bigger danger to CRT televisions than cold temperatures themselves. When your CRT warms up, water vapor in the air may condense on the outside of wiring and other components, creating an electrical hazard. Never turn on a television that has recently been moved from a cold room to a warm one. Always give the device time to warm up and dry out completely before you use it.
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  1. CRT and LCD televisions both work at relatively low temperatures, and will survive storage in cold areas as long as they are then warmed up gently. However, LCD televisions may be damaged by temperatures that CRT units can survive. The liquid crystal in the television freezes at a certain point, and may crack the screen or damage other components. The freezing point of each LCD TV depends on the crystal formulation used by the manufacturer.
  • Sci.Electronics.Repair FAQ: TV and Monitor CRT (Picture Tube) Information
  • Sci.Electronics.Repair FAQ: Notes on the Troubleshooting and Repair of Television Sets
  • The Fun Times Guide: Can Freezing Temperatures Harm the LCD TV in Your RV?

G.D. Palmer is a freelance writer and illustrator living in Milwaukee, Wis. She has been producing print and Web content for various organizations since 1998 and has been freelancing full-time since 2007. Palmer holds a Bachelor of Arts degree in writing and studio art from Beloit College in Beloit, Wis.

Can I Leave My Dog in the Car in Winter?

Basenji looking out of a car window in the rain.

You likely know about the dangers of leaving your dog unattended in a hot car. But, what about when it’s cold outside? While you might think it’s safe to park your pet during the winter months, the potential for harm, while not as high as in the summer, is still substantial. Your dog may enjoy the winter weather and colder temperatures while on walks, but dangers still remain for a dog in a car that’s left unattended in any weather.

Risk of Hypothermia

A car can act like a greenhouse in the summer, becoming much hotter than the environment outside. Likewise, in winter, cars without heaters running become rolling refrigerators, conducting cold from the outside. Cars have little to no insulation against outside conditions. So while your vehicle may shelter your dog from the wind and elements, it does not protect from frigid or freezing temperatures. And it can be dangerous to assume that your dog’s fur will be enough to protect them from extreme cold.

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Left alone in a cold car for too long, dogs can develop hypothermia, a dangerous condition that occurs when the core body temperature drops too low. For dogs, mild hypothermia begins to set in when their temperature drops below 99 degrees Fahrenheit. Frostbite can become an issue at extremely low temperatures. If left untreated, hypothermia can also result in cardiac and respiratory failure, brain damage, coma, and even death.

Signs of Hypothermia in Dogs

Shivering and curling up for warmth are some of the first signs of mild hypothermia in dogs. Other signs to watch for, according to the USAR Veterinary Group, include the following:

  • Increased heart rate, followed by a slow heart rate.
  • Rapid breathing, followed by progressively slower and shallower breath.
  • Sluggishness and delayed reflexes.
  • Depression.
  • Paleness.
  • Dilated pupils.
  • Loss of consciousness.

Dogs at Risk in Cold Cars

While it can be dangerous for any breed of dog to be left too long in extremely cold temperatures, some dogs tolerate the cold weather better than others. Northern breeds with thick coats, such as Alaskan Malamutes, Siberian Huskies, or Saint Bernards are bred to withstand colder climates and harsher conditions. But single-coated and short-haired breeds have a much lower tolerance for cold temperatures.

Puppies and senior dogs of any breed are also more susceptible to hypothermia, as are naturally thin breeds such as the Italian Greyhound. Small dogs and toy breeds are also less able to tolerate cold temperatures than larger breeds. Lastly, hairless breeds like the Xoloitzcuintli are especially poorly insulated against cold temperatures.

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How to Help Prevent Hypothermia

Ideally, if you’ll be stopping somewhere your dog isn’t allowed, leave your dog at home, or bring a human passenger who can stay with them and keep the heater running. If you must leave your dog alone in a parked car, keep your stop as short as possible, and dress your pooch for the wintry occasion with a dog winter coat or dog sweater. Provide plenty of blankets for your pup to burrow into and trap their own body heat. If you notice shivering or other signs of hypothermia starting to set in, quickly cover your dog and turn on the heat to warm them up. For more serious signs, get them to a veterinarian immediately.

Mind the Laws About Dogs in Cars

Many states have laws against leaving your dog in a parked car, regardless of the season. There also exist statutes that protect anyone who breaks into your car to rescue an endangered dog. While not all states have laws that address leaving dogs in cars, some have prosecuted dog owners for parking their pets in dangerous conditions under animal cruelty laws. If your dog requires treatment for hypothermia after being left in a car, you could face criminal prosecution.

As much as your dog may love to ride in the car, you can’t take your pet everywhere you go. The risks of leaving dogs behind in a parked car are simply not worth it. Plan special outings for your car-loving dog that don’t involve stopping at places where pets aren’t allowed, and save other errands for when your pup’s not with you.

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