Wireless Charging Explained: MagSafe, Qi and What Works With Your Phone
Wireless charging sounds like it should be strictly better than plugging a cable in. It is not — it is a trade of speed for convenience. Whether that trade is worth it depends entirely on how you charge.
Qi and MagSafe, plainly
Qi (pronounced "chee") is the universal wireless charging standard. Almost every phone that charges wirelessly — iPhone, Samsung, and most Android flagships — uses it. A Qi pad works with any Qi phone.
MagSafe is Qi with magnets added. A ring of magnets in the charger lines up with a ring in the phone, so the coils align perfectly and the charger snaps into place. Introduced by Apple, now widely copied.
The magnets solve the single most annoying failure of wireless charging: putting your phone down slightly off-centre and finding it at 12% in the morning because it never actually connected.
A MagSafe charger on a non-MagSafe phone
It still works — just without the snap. The Qi coil charges any Qi phone. You simply have to position it yourself, the same as any ordinary pad.
Android users can get the magnetic behaviour by using a case with a built-in magnet ring, or a stick-on magnetic ring.
Why it is slower, and by how much
Wireless charging transfers power through two coils across an air gap. Some energy is always lost as heat — that is physics, not a cheap charger. Expect roughly half to two-thirds the speed of a good cable.
The heat matters for a second reason: phones throttle charging speed when warm, so a hot phone on a pad charges even more slowly. Charging in a hot room in a Pakistani summer costs you real speed.
When wireless is worth it
The nightstand. You have all night, so speed is irrelevant. Put the phone down, pick it up full, no fumbling with a cable in the dark. This is where wireless genuinely wins.
A desk. Picking the phone up and putting it back down thirty times a day without plugging and unplugging is a real improvement.
Charging earbuds too. Most AirPods-style cases charge wirelessly, so one pad handles both.
When to use a cable instead
When you are leaving in twenty minutes. A cable will always win a short charge.
In the car. A magnetic mount that charges is convenient, but the phone gets hot in direct sun and heat plus fast charging plus navigation is hard on a battery.
While gaming or on video calls. The phone is already generating heat. Adding wireless charging heat on top means it barely gains charge.
The mistake that stops it working
A case that is too thick or has metal in it. Most wireless chargers work through a case up to about 3mm. Beyond that, charging gets slow or stops entirely.
Metal is worse than thickness — a metal plate for a magnetic car mount, or a metallic decorative back, blocks the field completely. If wireless charging stopped working after you changed cases, that is almost certainly why.
Also check for cards in a wallet case. A bank card between the coils can be damaged by the field, and will block charging.
The adapter still matters
A wireless pad is only as fast as the adapter feeding it. Plugging a 15W pad into an old 5W adapter gives you 5W of very slow charging. Pair the pad with a properly rated adapter — see our charger wattage guide.
Getting set up
Our MagSafe-compatible wireless charger works with phones, AirPods cases and any Qi device. If you do not already have a suitable adapter, the Wireless Charging Starter kit pairs it with a 20W adapter so the pad runs at full speed.
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