First of all, please check if the screen has been damaged in transport. The cables and the back LCD are very easy to break.
What should you pay attention before getting started the iPhone installation? 8 pts.You must know.
#1 Make sure you have read through the installation instruction within the package.
#2 Perform the replacement under a electro-static discharge (ESD) free environment.
Wear a anti-static wrist strap or put a anti-static mat on the working table to prevent any ESD damage on your phone device.
White and zebra strip lines sometimes results because of ESD as well.If you are not confident about that, we suggest you to locate a repair shop at your
neighbourhood.
#3 Cover up any metal bare connections around the flex cable with Kapton tape to avoid any 'short-out'.
#4 Watch through installation video tutorial before getting started. There are many of these tutorials in YouTube.
#5 Make sure you power off your phone before starting the repair work.
#6 Check whether there is any dust or debris in between the flex cables and motherboard. Clear them with brush or alcohol dipped cloth.
#7 Don't bend the flex cables.
#8 Make sure the flex cable is properly connected with a "click" sound.Don't force the connector together until they are properly lined up.
And here are some problems you probably would meet,
1. the screen stay black
Solution: make sure your phone has been charged; check the cable for LCD is damaged in transport; reconnect the cable after clean the cable with alcohol. Or just
contact us, our technician could offer you the professional solution.
2. Lines in the screen
Solution: that is static reaction. If you connect the cables many times in short time, there will be static. That lines will disappear itself after you recharged the
phone.
3. Touch no response
Solution: recheck the cable before installation. The edge between the cable and screen is very thin. If that part is damaged, there will be no response. If no damage,
please follow the directions we have provided cleaning the cables. And you could just contact us, you would get the correct solution from our technician.
Direction online: https://www.ifixit.com/Guide/iPhone+7+Display+Assembly+Replacement/67489 (for iPhone 7)
https://www.ifixit.com/Guide/iPhone+7+Plus+Display+Assembly+Replacement/67563 (for iPhone 7 plus)
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