A method of managing event information relating to User Equipments (UEs) in a device is disclosed. The method includes creating a group of segments for each of the UEs upon the event information of the UEs, wherein each group includes at least one segment and each segment of one group includes the event information relating to the same UE; and storing the segments in order of time when the event information is recorded to obtain an event information sequence. A method for searching for the requested event information from the event information sequence is also provided.