It is one of the most common worries at checkout: will this case stop my phone from charging on a pad? The short answer is almost always no. Wireless charging works through plastic, silicone, and leather without trouble. But there are three real exceptions worth knowing before you buy.
Thickness Is the Main Limit
Wireless charging uses an inductive field that reaches only a few millimeters. Most cases are 1mm to 2mm thick and cause no issue. Once a case pushes the total gap beyond roughly 3mm, charging can slow or stop. Extreme rugged cases with thick backplates are the usual culprit, not everyday cases like this heavy-duty silicone case, which stays within the charging window.
Metal and Cards Are the Real Enemy
A metal ring-holder, a metal kickstand plate, or a credit card sitting between the phone and the charger will interrupt the field or overheat. If a wallet case is causing charging failures, remove the cards or slide the phone out before charging.
Magnets: Alignment, Not Blocking
Magnets never block charging; they improve it by aligning the coils. A case without a magnet ring still charges on a flat Qi pad, it just will not snap to a MagSafe or Qi2 charger. If magnetic snap matters, choose a case that lists a built-in magnet ring.
Frequently Asked Questions
How thick can a case be before charging stops? Generally up to about 3mm total gap. Standard cases (1-2mm) are safe; very thick armor cases with metal plates can interfere.
Will a case slow my charging speed? A thin case has negligible effect. Speed loss usually comes from misalignment on a flat pad, which magnetic MagSafe or Qi2 alignment fixes.
Can I charge with a card in my wallet case? Remove metal-backed cards first. RFID cards and coins between the phone and pad can block the field or heat up.
Bottom line: nearly every case charges wirelessly. Watch the total thickness and keep metal and cards out of the charging zone.