How can a smart phone automatically connect data and how to completely cancel the link?

If mobile data is automatically turned on on the mobile phone, suggestions are as follows:

1. Check whether there is networked software in the background of the mobile phone, and suggest ending the background running program.

2. when the synchronization function is not used, it is recommended to slide the top curtain of the screen to cancel the synchronization function (some early machines are operated in the way of setting-account and synchronization-closing the synchronization function).

3. If it is ineffective, it is recommended to uninstall the recently installed third-party software to rule out whether it is caused by third-party software.

4. if the mobile data is still turned on automatically, please back up the data (contacts, information, photos, etc.) in the mobile phone and try to restore the machine to factory settings.

if the problem still exists, please bring the purchase invoice, the warranty card and the machine to the Samsung service center for professional after-sales engineers to help test.