A method performed by a mobile wireless device for connecting to a telecommunication network, comprising: sending a request to connect to a first cell of the telecommunication network, wherein the first cell implements a first connection technology; receiving from the first cell a connection rejection comprising a de-prioritization request, the de-prioritization request instructing the mobile wireless device to de-prioritize one or more frequencies of the first connection technology and comprising a de-prioritization timer indicating a time period for the one or more frequencies to remain de-prioritized; in response to the de-prioritization request, connecting to the telecommunication network via a connection of a second connection technology, wherein the connection of the second connection technology is of a higher priority than the de-prioritized one or more frequencies of the first connection technology but is of a lower data rate compared to the one or more frequencies of the first connection technology; determining that the mobile wireless device has left the coverage area of the first cell; and connecting to a second cell of the telecommunication network via a connection using one of the one or more frequencies of the first connection technology prior to the expiration of the de-prioritization timer, characterized in receiving a detection criteria, which is dynamically configurable, from the first cell, wherein the step of determining that the mobile wireless device has left the coverage area of the first cell comprises determining that the mobile wireless device has left the coverage area of the first cell according to the detection criteria received from the first cell. sending a request to connect to a first cell of the telecommunication network, wherein the first cell implements a first connection technology; receiving from the first cell a connection rejection comprising a de-prioritization request, the de-prioritization request instructing the mobile wireless device to de-prioritize one or more frequencies of the first connection technology and comprising a de-prioritization timer indicating a time period for the one or more frequencies to remain de-prioritized; in response to the de-prioritization request, connecting to the telecommunication network via a connection of a second connection technology, wherein the connection of the second connection technology is of a higher priority than the de-prioritized one or more frequencies of the first connection technology but is of a lower data rate compared to the one or more frequencies of the first connection technology; determining that the mobile wireless device has left the coverage area of the first cell; and connecting to a second cell of the telecommunication network via a connection using one of the one or more frequencies of the first connection technology prior to the expiration of the de-prioritization timer, characterized in receiving a detection criteria, which is dynamically configurable, from the first cell, wherein the step of determining that the mobile wireless device has left the coverage area of the first cell comprises determining that the mobile wireless device has left the coverage area of the first cell according to the detection criteria received from the first cell. <EOS>