Package Include: 3pack, one black one pink and one silver. How to apply it to your cell phone? 1. Clean the back of your mobile device. 2. Remove the film of the adhesive. 3. Place the card case on the back of your phone or case. 4. If you don't want use, it could be removed clean from your cell phone back easily NOTE: 1. The item size information is just only for reference, and allows 1-2mm difference due to manual measurement. Thanks. 2. Due to the angle and light problems of different photographers, there may be very slightly color difference between the object and the picture, but we guarantee that the style is exactly the same as that shown in the picture. We hope you will not mind. 3. Suits for iPhone, Galaxy, and all other smart phones. It also sticks to most cases. But for phones have an anti-fingerprint coating on the back don't allow 3M adhesive so apply on a case with these phone models, such as iPhoneX/8/8plus