A method of managing data bearers between a cellular network subscriber device and a packet data gateway in a cellular network core, the cellular network subscriber device and the packet data gateway being connected by a default bearer, the method including receiving at least one dedicated bearer request for a communication session between the cellular network subscriber device and an external network resource; comparing at least one parameter of the received dedicated bearer against a set of predetermined rules; and if at least one parameter of the received dedicated bearer request matches at least one of the set of predetermined rules: storing the at least one parameter of the received dedicated bearer request; and sending a message to the subscriber device to cause the cellular network subscriber device and packet data gateway to use the default bearer for the communication session.