http://valinet6l6tq6d5yohaa6gdsf2ho4qcqcxyj2nahp5kd4z7nsa6ycdqd.onion/2015/07/01/How-I-exported-my-text-messages-from-Windows-Phone-to-Android.html
Contacts are not necessary for me, they can be easily exported from people.live.com web app, and then imported into Google Contacts. \11. Wait for the backup to finish. It is actually pretty fast, and it fortunately exports sent items too, alongside received texts.