Method and apparatus for selecting network

1. A method for a mobile terminal to select a network, comprising:

when the mobile terminal is unable to reside on a top-priority network, recording information of a first cell of the top-priority network that the mobile terminal is unable to reside on, wherein the top-priority network is determined based a rule preset in the mobile terminal;

monitoring an environment for detecting the top-priority network when the mobile terminal is residing on a non-top-priority network; and

if a second cell of the top-priority network is detected and a relationship between the detected second cell and the first cell satisfies a preset condition, handing over the mobile terminal to the detected second cell, no matter whether a current network connection state of the mobile terminal is an idle state,

wherein the handing over the mobile terminal to the detected second cell comprises:

if the current network connection state of the mobile terminal is the idle state, switching a network mode of the mobile terminal to the top-priority network, and initiating a login request to the detected second cell to reside on the top-priority network; and

if the current network connection state of the mobile terminal is a connected state, initiating a Public Land Mobile Network (PLMN) selection, switching a network mode of the mobile terminal to the top-priority network, and initiating a login request to the detected second cell to reside on the top-priority network.

2. The method of claim 1 , wherein the preset condition comprises:

the detected second cell not being the first cell of which the information is recorded.

3. The method of claim 1 , wherein the present condition comprises:

the detected second cell being the first cell of which the information is recorded, and an interval between a current time and a time when the mobile terminal left the first cell exceeds a preset time period.

4. The method of claim 1 , wherein the preset rule comprises:

defining a Long Term Evolution (LTE) network on which the mobile terminal resides as the top-priority network.

5. A mobile terminal for selecting a network, comprising:

a processor; and

a memory for storing instructions executable by the processor,

wherein the processor is configured to perform:

when the mobile terminal is unable to reside on a top-priority network, recording information of a first cell of the top-priority network, wherein the top-priority network is determined based on a rule preset in the mobile terminal;

monitoring an environment for detecting the top-priority network when the mobile terminal is residing on a non-top-priority network; and

if a second cell of the top-priority network is detected and a relationship between the detected second cell and the first cell satisfies a preset condition, handing over the mobile terminal to the detected second cell, no matter whether a network connection state of the mobile terminal is an idle state,

wherein the handing over the mobile terminal to the detected second cell comprises:

if the current network connection state of the mobile terminal is the idle state, switching a network mode of the mobile terminal to the top-priority network, and initiating a login request to the detected second cell to reside on the top-priority network; and

if the current network connection state of the mobile terminal is a connected state, initiating a Public Land Mobile Network (PLMN) selection, switching a network mode of the mobile terminal to the top-priority network, and initiating a login request to the detected second cell to reside on the top-priority network.

6. The mobile terminal of claim 5 , wherein the preset condition comprises:

the detected second cell not being the first cell of which the information is recorded.

7. The mobile terminal of claim 5 , wherein the preset condition comprises:

the detected second cell being the first cell of which the information is recorded, and an interval between a current time and a time when the mobile terminal left the first cell exceeds a preset time period.

8. The mobile terminal of claim 5 , wherein the preset rule comprises:

defining a Long Term Evolution (LTE) network on which the mobile terminal resides as the top-priority network.

9. A non-transitory computer readable storage medium storing instructions that, when executed by a processor in a mobile terminal, cause the mobile terminal to perform a method for selecting a network, the method comprising:

when the mobile terminal is unable to reside on a top-priority network, recording information of a first cell of the top-priority network, wherein the top-priority network is determined based on a rule preset in the mobile terminal;

monitoring an environment for detecting the top-priority network when the mobile terminal is residing on a non-top-priority network; and

if a second cell of the top-priority network is detected and a relationship between the detected second cell and the first cell satisfies a preset condition, handing over the mobile terminal to the detected second cell, no matter whether a network connection state of the mobile terminal is an idle state,

wherein the handing over the mobile terminal to the detected second cell comprises:

if the current network connection state of the mobile terminal is the idle state, switching a network mode of the mobile terminal to the top-priority network, and initiating a login request to the detected second cell to reside on the top-priority network; and

if the current network connection state of the mobile terminal is a connected state, initiating a Public Land Mobile Network (PLMN) selection, switching a network mode of the mobile terminal to the top-priority network, and initiating a login request to the detected second cell to reside on the top-priority network.