Have you ever tried Google Drive?
With the apps for Android and iOS, your files and documents are also available wherever you are, on any device. Search for and share documents, access them offline and collaborate with others in real time on spreadsheets.
Even if your mobile goes for a swim, your documents are safely stored and up to date. Upload files from your Android phone or tablet to sync them with your other devices and keep them safe in Drive. You can also access documents while offline.