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I recommend you reset and delete the device information, so it is recommended you make a backup before using Nokia Suite, for this process follows these steps:
Open Nokia Suite on your computer.
Connect your phone to the PC using a USB cable.
Once recognized the device.
Select Tools.
Then Backup.
To reset and erase data follow these steps:
Select Menu on your phone.
Then select Settings.
Tap Phone.
Select Phone Administration.
Then select Factory Settings.
You choose Delete data and restore.
Then check if the error to delete data on your mobile continues.
I hope this information is useful to you. Thumbsup:
regards,