Find the required document, and then tap its name.
Tap Show Document Info.
The Document Info displays the basic information about the document, including: document type icon, document name, title, created by, creation date, modified by, modification date, version history, size, and properties, and, if checked out, the name of the person who checked the document out.
If the document has been saved locally for offline use, the offline status is shown in the header below the document title.
If an offline document was edited while offline, Modified locally appears, with the modification time, instead of the created by and modified by fields. Local Copy appears below the Document Info title.
From the Document Info panel, you can view person information and view document version history. When you view the person's information or view document version history, and open any documents, profiles or updates, they open in the same panel, but a Back icon () now appears at the bottom left of the page. Tap the Back icon to go back one step (page).
Tap the Close icon () at any time to close the Document Info panel (and any subsequent pages you may have opened).
Use the document commands in the Actions menu () as follows:
Tap the Actions menu () >
Check In () / Check Out () / Discard Check Out ().
For Check In commands
If both major and minor versions are being tracked in the document library, you are asked to select Version Type. Tap the version and select x.x Minor version / x.0 Major version / x.x Overwrite current version.
Optionally, fill in a check-in comment by tapping the Comments text area.
Tap Check In, or Cancel to cancel the operation.
Checked out documents have an arrow icon () overlaid on their type icon.
Documents that were declared as records cannot be checked out, and have a lock icon () overlaid on their type icon.
To approve or reject documents:
The Approve/Reject Action menu option only appears if the Content approval option has been set by the SharePoint administrator for the selected SharePoint library.
If the SharePoint library settings requires document approval, a new minor version is created until the document is approved. Once the document is approved, a new major version of the document is created.
If document approval is not required, a new major version of the document is created.