Backing up the data of a smartphone phone is a good and right thing to avoid that, in case of loss or theft or breakage, all the files saved inside it are lost, including photos, videos, documents etc. One way to back up these important files on a computer is by cloud storage services which automatically synchronize files saved in a certain folder.
On smartphones, on the other hand, the apps of these services are not automatic and do not give the possibility to synchronize the files saved on the phone, except for the photos that are automatically saved online by the various Dropbox, Onedrive, Google+ services etc.
Having an app that automatically backs up some folders on the phone automatically allows you to transfer files to your computer without having to manually intervene and synchronize files between different PCs and mobile phones .
Let's see which Android apps are comfortable for automatic file backup .
1) Dropsync
DropSync is an app that works as a client for Dropbox, with so many more functions that one wonders why they are not present on the official app.
Dropsync works in the background to synchronize selected folders on the phone like Dropbox does on the computer.
With Dropsync it is possible to synchronize two folders so that they are always identical, to upload files online only in a certain time, to keep a Dropbox folder available offline on the phone's memory and to avoid using the mobile data connection to save battery.
The free basic functionality while if you want to remove the advertisements and have the ability to synchronize multiple folders (or the entire Dropbox), or upload large files, you must buy the PRO version.
In case you are not using Dropbox but Google Drive you can use the Autosync app while instead if you use Box there is the Box AutoBox Sync app.
2) FolderSync
FolderSync is a universal app to synchronize files and make an automatic backup that can connect to all major cloud services, including even the most popular Onedrive, Google Drive and Dropbox as well as Copy.net, MySMS and many others.
FolderSync also allows you to synchronize your phone with your computer without going through external services, connecting via FTP or Windows file sharing (Samba) on the local network.
If you have a home router and a wifi network, you can then make sure that all the memory of the Android smartphone is copied and synchronized in a folder on your computer, permanently.
Among the options you can choose at what time of day to synchronize, choose whether to do it only in Wifi and how to synchronize, (mirror, download only, upload only).
The free application supports up to two accounts and lacks sync filters.
3) BitTorrent Sync is a completely free app that works like a pure sync app and allows you to use your computer as if it were a cloud server.
BitTorrent Sync allows you to share an unlimited number of folders between devices and there are no file size limits.
Automatic backup works with documents, photos, videos and all files and folders.
I already talked about how it works in the post on how to use BitTorrent Sync to synchronize folders between PC and mobile phone in P2P
