You can synchronise the contents of your tablet with iCloud enabling you to access the contents from different devices or restore them if you lose your tablet. Before you can use iCloud, you need to activate your Apple ID.
Tap your Apple ID.
Tap the indicator next to "iCloud Drive" to turn file synchronisation on or off.
You can synchronise the files on your tablet, such as presentations, spreadsheets, PDF files and other kinds of documents with other devices using iCloud. If you turn on file synchronisation, the files on your tablet, such as presentations, spreadsheets, PDF files and other kinds of documents will automatic be synchronised with other devices using Wi-Fi.
Tap the indicator next to "iCloud Photos" to turn the function on or off.
If you turn on the function, all new pictures on your tablet are synchronised with other devices via iCloud.
Tap arrow left.
Tap the indicators next to the required data types to turn synchronisation of each data type on or off.