how to verify the xperia z phone on sony website


Oct 10, 2013
I want to buy a xperia z cellphone on Ebay, Get the IMEI # from the Seller. When i try to find where to check the IMEI on sony website. It is very complicated, after 30 mins I gave up. Anyone know how to verify IMEI # of sony xperia z phone. Please help.
Thank you in advance,
PS! Because people who sign new contract with T-MOBILE or AT-T to get a new phones than put them on sale on Ebay or Craiglist, after the phones are sold they just stop making payment for the phone and Buyers end up with the locked phone!!