Are Magnets Bad for Phones? What They Can and Can’t Damage
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The worry that magnets wipe phones comes from older technology: floppy disks, cassette tapes and hard drives stored data magnetically, and credit card strips still do. Modern smartphones work differently. Everyday magnets, including magnetic car mounts, wallets and chargers, won’t erase your phone or break its screen. But they’re not irrelevant either. Here’s what’s safe and what deserves a little care.
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The Short Answer
No, ordinary magnets are not bad for phones. Phones store data on solid-state flash memory, which doesn’t rely on magnetism, and many phones are designed to use magnets for charging and mounting. The things magnets can affect are the phone’s compass, cards stored near the phone, some charging setups, and implanted medical devices nearby.
What Magnets Won’t Damage
- Your data: flash storage isn’t magnetic, so a fridge magnet or car mount won’t erase photos or apps.
- The screen: OLED and LCD screens aren’t harmed by everyday magnets.
- The battery: lithium-ion batteries aren’t drained or damaged by a static magnet.
- MagSafe and Qi2 phones: these are built with their own magnet rings. Apple explains that the magnets ensure proper alignment for fast wireless charging.
What Magnets Can Affect
The Compass
Your phone’s compass (magnetometer) senses magnetic fields to tell which way you’re facing. A magnet close to the phone can throw it off, so maps may point the wrong way when the phone sits on a magnetic mount. Moving the phone away from the magnet usually fixes the reading, and many map apps prompt you to recalibrate.
Cards in a Wallet Case
Magnetic stripes on credit cards, hotel keys and some ID badges can be weakened by strong magnets. Apple advises not to place credit cards, security badges, passports or key fobs between an iPhone and a MagSafe charger because the magnetic strips or RFID chips may be damaged.
Wireless Charging With Metal Plates
Some magnetic mounts for non-magnetic phones use a thin metal plate stuck to the phone or case. Metal between the phone and a wireless charger can block charging and may cause heat, so remove the plate or use a MagSafe/Qi2 case instead if you charge wirelessly.
Medical Devices
This isn’t damage to the phone, but it matters. Apple notes that devices containing magnets and radios can interfere with medical devices such as pacemakers and defibrillators. Many manufacturers recommend at least 6 inches (15 cm) of distance, or 12 inches (30 cm) when wirelessly charging.
What About Very Strong Magnets?
Industrial or large neodymium magnets are a different story from a car mount. They can pull a phone hard enough to crack glass, pinch fingers, and disrupt the compass and other sensors while nearby. Keep phones away from powerful magnets such as speaker magnets, MRI rooms and magnetic tool holders.
Magnetic Car Mounts: Safe?
Yes. Magnetic car mounts are one of the most common uses for magnets with phones. The main things to watch are a firm hold on bumpy roads and compass accuracy in navigation apps. If you use an iPhone, see our picks for the best iPhone car mounts, or read why your phone is magnetic.
Quick Safety Checklist
- Keep cards out from between the phone and a magnetic charger or mount
- Remove metal plates if you charge wirelessly
- Recalibrate the compass if maps point the wrong way
- Keep phones and magnetic accessories at least 6 inches from implanted medical devices
- Keep phones away from very strong industrial magnets
Frequently Asked Questions
Can a magnet erase my phone?
No. Phones use flash storage, which doesn’t store data magnetically.
Are magnetic phone mounts bad for phones?
No. They’re widely used and phones with MagSafe or Qi2 are designed for them. They can affect the compass while attached.
Can magnets damage the phone camera?
Everyday accessories designed for phones aren’t known to cause damage, but very strong magnets close to the lens area can interfere with camera stabilization or focus while nearby.
Do magnets drain phone batteries?
No. A static magnet doesn’t drain a lithium-ion battery.
Are magnetic wallets safe for credit cards?
Usually, when used as designed, but keep cards away from magnetic chargers and avoid stacking cards against strong magnets.
The Bottom Line
Magnets aren’t bad for phones. They won’t erase data or damage the screen or battery, and many phones are built to use them. Just protect your cards, remove metal plates for wireless charging, recalibrate the compass if needed, and keep phones away from implanted medical devices and very strong magnets.
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