Network icon display method and device

1 . A network icon display method applied to a terminal device, comprising:

displaying a 5G network icon, wherein the terminal device is connected to a long term evolution (LTE) cell and a new radio (NR) cell by using a dual connectivity technology, and the LTE cell supports a non-standalone (NSA) networking mode;

entering a 4G connected mode after disconnecting from the NR cell;

sending first request information to a network side device when a preset condition is met including a duration in which there is less user traffic in the 4G connected mode is greater than or equal to a first preset duration, wherein the first request information is used to request to release a connection to the LTE cell; and

in response to releasing the connection to the LTE cell, entering a 4G idle mode, and displaying the 5G network icon.

2 . The method according to claim 1 , wherein the first request information is used to indicate that the terminal device has no user traffic, and the first request information is a tracking area update (TAU) request message.

3 . The method according to claim 1 , wherein the preset condition comprises one or more of following items:

entering a screen-off state; entering a power saving mode or an ultra power saving mode; a temperature being greater than or equal to a first preset threshold; a power being less than or equal to a second preset threshold; an uplink rate being less than or equal to a third preset threshold; or running only an application in a whitelist.

4 . The method according to claim 1 , wherein the method further comprises:

displaying a 4G network icon after entering the 4G connected mode and before entering the 4G idle mode.

5 . The method according to claim 1 , wherein the method further comprises:

after entering the 4G connected mode, starting a first delayer and displaying the 5G network icon.

6 . The method according to claim 5 , wherein the sending the first request information to the network side device when the preset condition is met comprises:

when it is detected that there is no user traffic in the 4G connected mode, starting a first timer, wherein the first timer corresponds to the first preset duration; and

when the duration in which there is no user traffic in the 4G connected mode is greater than or equal to the first preset duration, and the first timer stops timing before the first delayer, sending the first request information to the network side device after the first timer stops timing; and

the method further comprises:

stopping timing of the first delayer after entering the 4G idle mode.

7 . The method according to claim 5 , wherein the sending first request information to the network side device when the preset condition is met comprises:

when it is detected that there is no user traffic in the 4G connected mode, starting a first timer, wherein the first timer corresponds to the first preset duration;

when the first delayer stops timing before the first timer, displaying a 4G network icon after the first delayer stops timing; and

when the duration in which there is no user traffic in the 4G connected mode is greater than or equal to the first preset duration, sending the first request information to the network side device after the first timer stops timing.

8 . The method according to claim 5 , wherein the first delayer corresponds to a preset delay duration (T2), and the method further comprises:

starting a first timer after entering the 4G connected mode, wherein the first timer corresponds to the first preset duration (TB), and the TB is less than or equal to the T2;

the sending the first request information to the network side device when the preset condition is met comprises:

when the duration in which there is no user traffic in the 4G connected mode is greater than or equal to the TB, sending the first request information to the network side device after the first timer stops timing; and

the method further comprises:

stopping timing of the first delayer after entering the 4G idle mode.

9 . The method according to claim 5 , wherein the first delayer corresponds to a preset delay duration (T2), the T2 is equal to the first preset duration, and the sending the first request information to the network side device when the preset condition is met comprises:

When the duration in which there is no user traffic in the 4G connected mode is greater than or equal to the T2, sending the first request information to the network side device after the first delayer stops timing.

10 . The method according to claim 5 , wherein the first delayer corresponds to a preset delay duration (T2), and the method further comprises:

starting a first timer after entering the 4G connected mode, wherein the first timer corresponds to the first preset duration (TB), and the TB is greater than the T2; and

displaying a 4G network icon after the first delayer stops timing; and

the sending the first request information to the network side device when the preset condition is met comprises:

when the duration in which there is no user traffic in the 4G connected mode is greater than or equal to the TB, sending the first request information to the network side device after the first timer stops timing.

11 . A network icon display method applied to a terminal device, comprising:

displaying a 5G network icon, wherein the terminal device enters a 4G idle mode after registering with a long term evolution (LTE) cell, and the LTE cell supports a non-standalone (NSA) networking mode;

entering a 4G connected mode after establishing a connection to the LTE cell;

sending first request information to a network side device when a preset condition is met including a duration in which there is less user traffic in the 4G connected mode being greater than or equal to a second preset duration, wherein the first request information is used to request to release the connection between the terminal device and the LTE cell; and

in response to releasing the connection to the LTE cell, entering the 4G idle mode, and displaying the 5G network icon.

12 . The method according to claim 11 , wherein the preset condition comprises one or more of following items:

entering a screen-off state; entering a power saving mode or an ultra power saving mode; a temperature being greater than or equal to a first preset threshold; a power being less than or equal to a second preset threshold; an uplink rate being less than or equal to a third preset threshold; or running only an application in a whitelist.

13 . The method according to claim 11 , wherein the method further comprises:

displaying a 4G network icon after entering the 4G connected mode and before entering the 4G idle mode.

14 . The method according to claim 11 , wherein the method further comprises:

after entering the 4G connected mode, starting a second delayer and displaying the 5G network icon.

15 . The method according to claim 14 , wherein the sending the first request information to the network side device when the preset condition is met comprises:

when it is detected that there is no user traffic in the 4G connected mode, starting a second timer, wherein the second timer corresponds to the second preset duration; and

when the duration in which there is no user traffic in the 4G connected mode is greater than or equal to the second preset duration, and the second timer stops timing before the second delayer, sending the first request information to the network side device after the second timer stops timing; and

the method further comprises:

stopping timing of the second delayer after entering the 4G idle mode.

16 . The method according to claim 14 , wherein the sending first request information to the network side device when the preset condition is met comprises:

when it is detected that there is no user traffic in the 4G connected mode, starting a second timer, wherein the second timer corresponds to the second preset duration;

when the second delayer stops timing before the second timer, displaying a 4G network icon after the second delayer stops timing; and

when the duration in which there is no user traffic in the 4G connected mode is greater than or equal to the second preset duration, sending the first request information to the network side device after the second timer stops timing.

17 . A terminal device, comprising:

a screen, configured to display a network icon;

one or more processors;

a memory; and

one or more computer programs, wherein the one or more computer programs are stored in the memory, the one or more computer programs comprise instructions, and when the instructions are executed by the terminal device, the terminal device is enabled to perform following operations:

displaying a 5G network icon on the screen, wherein the terminal device is connected to a long term evolution (LTE) cell and a new radio (NR) cell by using a dual connectivity technology, and the LTE cell supports a non-standalone (NSA) networking mode;

entering a 4G connected mode after disconnecting from the NR cell;

sending first request information to a network side device when a preset condition is met including a duration in which there is less user traffic in the 4G connected mode being greater than or equal to a first preset duration, wherein the first request information is used to request to release a connection to the LTE cell; and

in response to releasing the connection to the LTE cell, entering a 4G idle mode, and display the 5G network icon.

18 . The terminal device according to claim 17 , wherein the first request information is used to indicate that the terminal device has no user traffic, and the first request information is a tracking area update (TAU) request message.

19 . The terminal device according to claim 17 , wherein the preset condition comprises one or more of following items:

entering a screen-off state; entering a power saving mode or an ultra power saving mode; a temperature being greater than or equal to a first preset threshold; a power being less than or equal to a second preset threshold; an uplink rate being less than or equal to a third preset threshold; or running only an application in a whitelist.

20 . The terminal device according to claim 17 , wherein the operations further comprise:

displaying a 4G network icon after entering the 4G connected mode and before entering the 4G idle mode.