Q1: about the difference between the screen with fingerprint and the screen supporting fingerprint function?With Fingerprint screen:Mobile phone fingerprint is ultrasonic fingerprint,capacitive fingerprint:the screen has fingerprint module;Support fingerprint function screen:mobile phone is Optical fingerprint: there is no fingerprint module on the screen,only one fingerprint window to assist the fingerprint module to read the fingerprint;Q2: How to activate the fingerprint function of the new screen?After installation,you need to delete the old fingerprint and re-enter the new fingerprint. After entering the new fingerprint, use the password to unlock it for the first time.Turn on the screen a second time,and then use your fingerprint to unlock.Q3: Why can't I use the fingerprint function after installing the screen?Both OLED screen and AMOLED screen support fingerprint function. If the fingerprint cannot be used, there are three situations:1.The fingerprint sensor is damaged or dirty or the fingerprint hole is not installed correctly.2.Fingerprints need to be corrected in engineering mode. Please contact customer service for engineering code..Q4:Many phone with 2.5D Curved Glass,Will the glass film cover the full screen? This phone is with 2.5D curved edge screen.the glass film is hard, not be available.It is design to cover the flat part of the screen. can not cover the edge.Pls understand.Q5:why the price of the product has changed,the sale price is lower todayA. The cost of a product is a floating price (which includes the cost of raw materials, transportation costs, and production costs).      When there is a big change,we will increase and reduce the price accordingly.b. The instability of the international exchange rate is also one of the reasons for the adjustment of the priceQ6: What should I do if the touch screen and LCD is not working?Please check the possible causes and follow the troubleshooting steps below to solve the problem:It is recommended to contact the customer representative first,or you can eliminate the cause of the fault and correct it yourself.1.Please check whether the motherboard has been fixed with screws. For mobile phones after 2019,80% of the startup cables are contact flexible cables,    and the motherboard can be powered on only after screws are fixed.2.Static electricity generated by friction may interfere with the mobile phone.Please gently press the power button to turn off the screen and turn it on again.    In most cases, this step can solve this fault;3.The mobile phone screen may be wet.Please wipe the water on the screen and restore the touch screen function;4.Some running applications may slow down the system,Please wait for the system to return to normal or close the corresponding applications;