FYI Notice: To all the Apple Buyer
Kindly take note all US/Japanese/ European version of Apple users do not upgrade the system Brush system do not change the SIM card.
(Apple released the new system closed the mobile Unicom 4G and they officially closed the iOS 10.3.3 and iOS11 Brush verification)
iOS10. 3.3 was no longer available for the upgrade or downgrade, if you upgrade to 11.0.0 that’s no way for you to do downgrade All 9 or 10 system do not upgrade, once the system was been upgrade, you may not able to do the phone activation or the phone screen may not be sensitive, fingerprint may not be working normally, 3G services may not be found, 4G is totally can not be use. As the 11 system was designed to iPhone 8 and iPhone 8Plus!
For customer who had been upgrade to IOS 11.0.0 as the customer have the issue from above, we are not able to cover the warranty, as all our devices send out was IOS 9 or 10.