The Motorola i1 doesn't have a built-in Call Record feature.
What you can do is to install a third-party application that can let you record your phone conversation. You can try the Total Recall 4.2. It is considered as one of the best call recorders for mobile phones. Below is the download link for Total Recall:
http://www.brothersoft.com/mobile/ebuddy-download-4526.html