A method and device for managing an instant communication application program, and a mobile terminal thereof are provided. The method includes: when an upper-layer Application Processor (AP) side of a mobile terminal is in a standby state, an instant communication application program is prevented from sending a heartbeat packet to a network server through the upper-layer AP side; and the instant communication application program is replaced to send the heartbeat packet of the instant communication application program to the corresponding network server.
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