NO.

Upating from 4.2.2 to 4.3 will retain your data, but this will make you lose root. To root, you would need to unlock the bootloader, which will almost always require a Factory Reset.

So, I suggest to back-up your user apps and data with Titanium Backup or something similar.

NO.

Updating from 4.2.2 to 4.3 will retain your data, but this will make you lose root. To root, you would need to unlock the bootloader, which will almost always require a Factory Reset (thus, you lose your data).

So, I suggest to back-up your user apps and data with Titanium Backup or something similar.

YES:

• Upgrading from Android 4.2.2 to 4.3 via OTA will not make you lose data
• Rooting your phone will not make you lose data, as long as you do not flash a new ROM, only root.

NO.

Upating from 4.2.2 to 4.3 will retain your data, but this will make you lose root. To root, you would need to unlock the bootloader, which will almost always require a Factory Reset.

So, I suggest to back-up your user apps and data with Titanium Backup or something similar.