How to HARD RESET and start service menu for Sony Ericsson Xperia Ray ST18i

Hi, If you have problem with your Sony Ericsson Xperia Ray and need to hard reset your device check this video. I am showing how to get to service menu to find out information about you mobile or how to hard reset Xperia Ray. I tried it for other Sony mobiles and it worked too. Hope it was usefull for you.