Note:
1:Remove previously installed screen protectors before installation, it will cause muffles voice and causes the case not be fully sealed.
2: Due to waterproof performance requirements, the phone call voice would be a little bit lower.
3:It is recommended to use the maximum volume adjustment, Bluetooth device or headphones to get better sound.
4:Please do Water Test according to the User Manual before placing phone in the case or before you take it to swimming pool, beach or anywhere has water.
5: Charge: Please insert the charging cable completely (for the waterproof design, the charging port is tight and needs to be forced).