Product Grades

Back Glass and Middle Frame：iPhone Models before iPhone 8 do not have back glass cover, all are integrated middle metal frame + back cover，after the iPhone 8 series, it has change with middle metal frame + back glass cover, and for iPhone 14/14plus/15/15plus/15pro/15plus,there are some differences.They adopt with a split aluminum alloy middle frame + back glass cover. So if your back glass is broken you can only take out the broken glass and replace with a new back glass without replacing the whole middle frame+ cover. The back panel glass and frame of 14 and 14plus/15/15plus/15pro/15plus are separate, while 14pro and 14pm are integrated(it means the back metal plate is integrated with the middle frame together). so normally you have to replace the whole back cover with housing frame if your iphone 14pro/14pro max or others' back cover is broken. You can only replace the back glass if just the glass is crack but the whole process will be very difficult and complicated.

Back Glass：For iPhone 11 and above model, the rear camera glass has a raised part, so the back cover glass has distinction between 2-in-1 and one-piece intergrated, and there is no that difference in back glass for models under iPhone 11.The original back glass is made of double glass, and adopt seven-layer dyeing process.

For most of other small internal parts,like back camera/front camera/chaiging port and so on, it gernerally have the above three different quality vesion. the default version upload in our shop is premium vesion,but since there is so many different product type, some product will only platinum version. For wholesalers we have a clearly quality declare in quotation,but for end-users please contact us if the product page haven't make a clear definition of the product quality. Also feel free to ask us if you need others quality.

Some batches of original glue do not have QR codes. Original adhesive is all integrated. If you look closely at the oem high copy three-layer or two-layer adhesive, you will find that one end is spliced, and the spliced ​​one is difficult to make airtight. The main component of oem high copy stretch adhesive is rubber, and the surface is uneven. The surface of the original is full and smooth, with a granular feel.

Note: The original waterproof glue of Apple 12, 13, 14, and 15 series is a hot melt glue. After the screen is installed, it needs to be heated at 90 degrees for 3 minutes on a heating table, or the screen is heated around with a hair dryer, and then a weight of about 5 kg is used to maintain pressure for more than 10 minutes. It can achieve the original waterproof effect without air leakage (except for the original machine that has been replaced with accessories and non-original). Since the mobile phone will heat up during use, the glue will slowly age. It will not affect the effect if it is used directly without heating!
The adhesive is divided into black and white colors, black: the surrounding glue strips are all black; white: the two long sides are black, and the upper and lower sides are white (because the glue is used inside the mobile phone, usually black can be selected, and no strict color classification is required).
Rules of use: Please choose the color directly according to the color of the screen. If the screen is black, choose black glue, and if it is white, choose white glue. For pink, gold, silver, and rose gold mobile phones, the screen sealant inside is white at both ends. For gray, light black, and matte black mobile phones, the screen waterproof adhesive inside is black. However, the adhesive is used inside the mobile phone, so strict color classification is not necessary.