How to solve Samsung s5 updating Android 6. card?

there are six models of Galaxy S5 listed in Chinese mainland, namely G96V, G96W, G98V, G98W, G99D and G99W. At present, the latest operating systems of G96V, G96W, G98W and G98V are Android 6.；; The latest operating system version of other models is Android 5..

If your mobile phone is stuck after upgrading the system, I suggest you:

1. Back up the data (contacts, SMS, photos, etc.) and try to restore the factory settings.

2. If the problem still exists, please bring the machine, purchase invoice and repair card to the local Samsung after-sales service center, and the engineer will help you reinstall the version of the mobile phone system.