For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
Dropbox - Online Sync and File Sharing
Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
Google Drive - Access and sync your files anywhere
TextMe - TextMe is a free calls and messaging application at both local and international levels.
Mega - Secure File Storage and collaboration
Talkatone - Android App on. Google Play. Stop paying for cell minutes, texts & landlines; Turn your iPad or iPod touch into a phone; Call/Text even in areas with bad cell coverage; Call/Text when travelling without paying for expensive international minutes.