1: Remove Screen Protectors: Please remove any previously installed screen protectors before installing the case. Leaving them on may cause muffled sounds and prevent the case from sealing properly.

2: Sound Quality: Due to the waterproof design, the phone call volume may be slightly reduced. We recommend adjusting the volume to maximum for clearer audio or using Bluetooth devices or headphones.

3: Waterproof Testing: Prior to use, especially in environments like swimming pools or beaches, please conduct a Water Test as outlined in the User Manual to ensure a secure seal.

4: Charging: For optimal performance, always use the original charger and earphone cable.