Someone, after the phone is restarted, there is no contact in it. What happened?

If the mobile phone contacts are lost or not displayed, it is suggested that:

1. Check whether the contact display mode is All: Contacts-More-Settings-Contacts to be displayed-Select all contacts. (Note: The operating paths of different models of mobile phones may be slightly different. )

2. If "All Contacts" is selected, but the existing contact information is still not displayed, please create a new contact and store it in your phone to see if it will not be displayed or lost.

3. If the contacts are stored in the SIM card, please put the SIM card in another mobile phone to see if it can be read normally.

4. If the contact person still cannot be displayed, it is recommended that you bring the purchase invoice, three-guarantee certificate and mobile phone to the local Samsung service center for inspection by engineers.