Help, How to read IMEI on Samsung Galaxy S6 6.0.1…


i recieve this phone in "Re-activation Lock" (Samsung Account) mode…i try to pay the service in server..after 3 days they got an answer,.but when i enter the email and password..it says processing failed., i contact the coder for refund they ask for me to give the IMEI readed by the software or any box..
my problem is i can’t read the imei..is there any ways to read imei of this phone?

thanks…