Here are easy instructions for removing the back (bottom) cover and installing a microsd card on the Virgin Mobile HTC One V Android phone:
Bottom coverhttp://www.htc.com/help/in/howto_iframe.aspx?id=166989&type=1&p_id=439Replacing the bottom cover Important: Antennas are placed underneath the cover. To get the best signal for calls and data connection, be sure to secure the cover tightly.
Storage cardhttp://www.htc.com/help/in/howto_iframe.aspx?id=166991&type=1&p_id=439Inserting the storage card Take the bottom cover off. Insert the microSD™ card into the storage card slot with its gold contacts facing down and push it into place.