Reason behind it reverting #min# to "Qminq" is because the newer devices use the Call Log to search your address book as well as dial out. As soon as you begin using anything outside of the normal phone keys - including # and * - it assumes you're searching for someone in your contacts. Simply hit your Phone icon and start typing one of your contacts names, the call log will turn into a search list of your contacts and allow you to highlight their name, and expand to the available phone numbers to call with.