GEOS SDK TechDocs|
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1.1 Multiple-Selection ContactLists | 
1.3 Detecting Unknown Phone Numbers Normally, a ContactList will lose track of the user's current search if the focus moves to another object. To force the list to remember the current search, send it a MSG_CONTACT_LIST_PRESERVE_SEARCH_ON_NEXT_LOST_FOCUS before it loses the focus. (This message is available on devices with version numbers "Responder Build 4...." and higher. See Software Version Number for information about finding out the software version of the user's device.)
GEOS SDK TechDocs|
| 1.1 Multiple-Selection ContactLists | 1.3 Detecting Unknown Phone Numbers