Outstanding feature --won't add much bulk to your phone, upgraded the waterproof but gas-permeable membranes vents, the sound on telecommunication is much improved, rubber covering headphone jack is detachable for replacement due to daily wear and tear --reservation camera viewfinder window, to adapt to a variety of environmental photography --headset hole position is provided with a protective plug, free disassembly, safe, practical --increase of only mm thickness, does not affect the thin appearance of phone, no bulky --double AR coated glass lens, shooting effect is more clear note please follow correct installation, please carefully read correct installation mode demonstration videos or instructions, anything problem, please contact us 1. Charging port: please use apple brand lighting to USB cable or MFI cable with narrow connector for charging 2. Waterproof test: please put a tissue in the case for test. If tissue is not wet, the case passes the test 3. Sound issue: all waterproof case would have sound issue. Open the charging port door or use headphone/Bluetooth device to get better sound seller Please note this is an imported product with no warranty from the seller description (1) we support 7 days return and refund with no reason (2) manufacturer Please note this is an imported product with no warranty from the seller for 90 days from date of purchase for free replacement. Within the Please note this is an imported product with no warranty from the seller period, if a material or workmanship defect arises with regard to any AOWOTO product, please contact us for a replacement. The Please note this is an imported product with no warranty from the seller does not, under any circumstances, cover the replacement or cost of any electronic device or personal property inside or outside of AOWOTO item.