This sticker has a shielding layer and can be attached to the metal back of the phone and can be used normally.
Trademark notice: MIFARE®, MIFARE Classic®, MIFARE Ultralight®, and MIFARE DESFire® are registered trademarks of NXP B.V. This compatible product is not manufactured, sponsored, endorsed, or authorized by NXP B.V. Trademark references are used solely to identify product compatibility.











