How to backup contacts and sms messages from Sony Xperia acro HD IS12s

Losing your contacts can be frustrating. This guide shows you how to use PhoneCopy.com to keep a safe backup of all data from your Sony Xperia acro HD IS12s — it only takes a few minutes.
Download PhoneCopy for Android to your Android phone, which you can download free of charge. After downloading and installation, go through following steps.
Backup contacts and SMS from your Android
Run the app and create new account. You can check which contact databases you want to backup and synchronize. You can do multiple choice.
After successful login, press "Advanced & Account". Select "One-way sync" and after choose "This device >> server".
Contacts from your Android phone will be copied to PhoneCopy.com server in few seconds.
Your data is now safe on PhoneCopy. The service stores a full copy of your contacts online, so you can access them from any device or restore them whenever needed.
Some additional tips:
The free PhoneCopy plan allows you to store up to 500 contacts, which is more than enough for most users. A premium plan is available if you need to sync more data or use advanced features.