ok
While flashing with wdrt does our app data , data in memory card gets wiped out??
or we have to remove the memory card while flashing??
what about WhatsApp data? does it gets wiped out as well?
please provide a complete set of actions to do before flashing, and after flashing
also the steps to flash
Your memory card data remains as it is except the apps installed on SD card won't work after the flashing. WhatsApp backup also remains as it is and can be used to restore after installing WhatsApp again. All data in your phone memory will be lost.
Steps to be followed before flashing:
1. Contacts and Messages: Although they get backed up automatically on the cloud if your phone settings are set as such but still to be on the safe side, download "contacts+messages backup" app published by Microsoft in the store. After installing, the app will not be shown in app list but in settings. Open settings and it will show up in the last of the menu, open it and take backup. Backup is saved on your memory card so make sure you have inserted one.
PS: After logging in through your Microsoft account, contacts will show up automatically so you won't need to restore, but still having a backup is never a bad thing.
2. App Data: App data of some participating apps would be saved on cloud automatically (OneNote, Asphalt 8 etc.) and will get restored. For some you will have to take specific backup like Whatsapp. For others, the app data will be wiped completely unless you have a specific backup. So make it sure by navigating your apps list that you don't have any important data in App data.
PS: If you have any app to lock/hide your pictures, export them from the app to your memory card as they will be lost with the app data.
3. Songs/Videos/Documents/Pictures: This all media saved on your phone memory will get wiped, so move these to your memory card or take a backup by connecting to PC. Media on memory card will remain as it is so no need to worry about that.
This is all you need to do before flashing your device.
If I have missed something please suggest so that I can add it up in this post itself.