FIELD: information technology.;SUBSTANCE: messaging method involves writing a user application formed in advance, which enables to form dynamic menu services and subscription for delivery of services to the identification module of a mobile communication network user. In the memory of an activated user identification module, a buffer of a packet information message assembly for said user application is formed, which occupies an invariable memory size which is determined when writing said user application. The user identification module receives packet information messages which include a label which contains a sequence of subfields indicating the possibility of assembling message parts in the allocated buffer, that the message part belongs to packet information, the index number of the message part in the information packet, the number of message parts in the information packet and discarding messages which do not contain said label.;EFFECT: quality reception of packet information when a user changes a mobile network operator.;1 dwg
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