My Samsung s7edge updated Android 7.0 today. After the update, there are no system contacts and text messages. How can I recover?

Restore factory settings. Need to restore factory settings or double reset. In case of double clearing, remember to log out of Samsung account, otherwise it may turn brick.

The front of Samsung Galaxy S7 edge adopts a 5.5-inch Super AMOLED magic screen with a resolution of 2560x 1440 pixels. The display effect is still delicate? . The core aspect has built-in Opteron 820 processor and 4GB RAM? LPDDR4 runs memory and can run Android 6.0. 1 system smoothly. ?

At the same time, the machine also has a built-in 3600mAh battery which supports fast charging technology (QC2.0). On the back of the fuselage, there is a12 megapixel camera, including the large aperture of F 1.7 and its corresponding 5 megapixel front lens.