Custom Series · Magnetic

Magnetic Cases Where the Array Is Actually Placed Right

"N52 magnets" is on almost every magnetic case listing and it is not the number that decides whether a wallet stays put. Geometry, panel thickness and retention matter more than the grade — and on foldables, placement is the whole game.

N52Magnet grade
≤1.0 mmRing offset tolerance
Over-mouldedRetention method
≤1.2 mmPanel over magnet
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All 7 ranges in production

Click through for full specifications, colourways and model coverage.

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What decides holding force

FactorSpec we holdWhy
Array geometryRing plus alignment magnet, official layoutA correct ring with no alignment magnet lets accessories rotate
Ring offset≤ 1.0 mm1.5 mm still holds a wallet but measurably drops charging speed
Panel thickness over magnet≤ 1.2 mmForce falls off sharply with distance; every 0.3 mm costs hold
Magnet retentionOver-moulded or bonded, never loose press-fitPress-fit magnets break free after repeated drops
GradeN52 in slim cases, N42 acceptable in thick shellsHigher grade buys force per millimetre, not force overall

Where magnets conflict with features

A card slot sits exactly where the ring wants to be; on a foldable the hinge occupies the centre line and the array must move to the lower panel; a steel kickstand over the magnet zone shunts the field. Each of our magnetic ranges resolves one of these, which is why the ring position differs between products.

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How to test a magnetic case before you commit

  1. Vertical wallet test — loaded wallet, phone screen-out, hold ten seconds. No rotation, no slide.
  2. Tilt test — 45 degrees. Anything that slides here falls off in a pocket.
  3. Off-axis shake — sideways, not up and down. Shear force is the real failure mode.
  4. Charging rate — attach a MagSafe charger and confirm the phone reports full-rate charging.
  5. Heat soak — charge 30 minutes, then repeat the tilt test. Neodymium weakens when hot; a borderline array fails only warm.
  6. Drop retention — drop from waist height onto tile three times, then repeat the vertical test. This catches magnets that broke free.

Run these on a production sample, not a golden sample, and do not tell the supplier what you are testing.

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Frequently asked

Is N52 always better than N42?

Only when thickness is the constraint. N52 gives more force in less space; in a thick shell with room for a larger array, N42 can match the hold at lower cost.

Will a magnetic case slow charging?

Only if the array is misaligned or the back is too thick. Correct alignment supports full-rate charging.

Do magnets damage the phone?

No. Modern phones are designed around MagSafe-style accessories. The real risks are magnet retention and magnetic stripe cards.

Can you produce magnets for a foldable?

Yes — the array is routed into the lower back panel, clear of the hinge flex.

Need magnetic case pricing?

Send the models, target quantity and the accessories your customers use.

Send Your Enquiry
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Dongguan Zhongyi Technology Co., Ltd.

No. 31 Xinliao Road, Dongkeng Town
Dongguan, Guangdong, China
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