Whenever the Dajia HUD APP navigation stops in the background, the navigation stops after the screen is stopped, or the GPS signal is weak after the screen is stopped, it is caused by not setting to allow the APP to run in the background. You need to follow the settings as follows. In addition, some mobile phones are in the background when a call is made. The APP will also be killed, the same needs to be set as follows

Xiaomi mobile phone:

a. Please go to [Security Center]-"Application Management"-find the APP, click on the power saving strategy to select unlimited.

Or set as follows:

Open [Settings]-[Power and Performance]-[Power Saving Mode]-[Power and Performance]-[App Configuration]-then click to enter our application, select [Unlimited]

b. Adding our app to the system whitelist can reduce navigation gps problems and Bluetooth disconnection problems

c. Open [System Settings] [Notification and Status Bar] [Notification Management] to find our application, select [Allow Notification]

Huawei cell phone:

The background positioning of some Huawei mobile phones is restricted. The main reason is that the security software "Mobile Manager" of Huawei mobile phones restricts the background activities of the application. The specific solution steps are as follows:

1) Open Huawei's "Phone Manager" application

2) Enter the startup management interface

3) Check whether your APP is in the automatic management state, if it is, click the slider (or APP name) to enter the manual management interface

4) Turn on "Allow background activities"

5) After clicking OK, you can see that your APP is already in manual management state

b. Adding our app to the system whitelist can reduce navigation gps problems and Bluetooth disconnection problems

vivo mobile phone:

a. The solution to the positioning and navigation problem in the background is as follows

The specific solution steps are as follows:

1) Open "Settings"

2) In "Settings", enter the "Battery" menu

3) In the "Battery" menu, enter "Background high power consumption", and in the "Battery" menu, the power saving setting must be in normal mode to allow the background to run positioning

4) In "Background High Power Consumption", find our APP, and click Allow.

b. Adding our app to the system whitelist can reduce navigation gps problems and Bluetooth disconnection problems

OPPO mobile phone:

a. The solution to the positioning and navigation problem in the background is as follows

The specific solution steps are as follows:

1) Open "Settings"

2) In "Settings", enter the "Battery" menu

3) In the "Battery" menu, enter "Power Consumption Protection"

4) In the "Power Consumption Protection" sub-menu, find our APP, and then click to enter.

5) Turn off "Background Freeze", turn off "Automatic optimization of abnormal power consumption", turn off "Deep Sleep"

b. Adding our app to the system whitelist can reduce navigation gps problems and Bluetooth disconnection problems

c. Enter [System Settings] [Application Management] to find our application, and select [Notification Management] to allow notifications.

d. Pull down the status bar, and long press [Location Services] to open [Background apps that use GPS positioning] to find our app and choose to open it.

Nubian mobile phone:

The application cannot be located after entering the background. The main reason is that the security software "Mobile Butler" that comes with the Nubia mobile phone restricts the background activities of the application. The specific solution steps are as follows:

1) Open the "Mobile Manager" application

2) Select "Power Saving" in the main interface of "Mobile Manager" to enter the main interface of Power Saving

3) After entering the power saving interface, click the gear-shaped button in the upper right corner, as shown in the figure

4) After entering the power saving interface, check whether the Abnormal Power Consumption Cleanup is turned on. If it is the easiest way to turn it on, turn it off. If you only want the app you selected to run in the background, you can use the whitelist manage.

If you want the app to run in the background, you need to see two whitelists:

Power consumption protection whitelist: If it is not added to the power consumption protection whitelist, the app may be killed while it is running in the background;

Background protection whitelist: If you don’t add it, your app may not be able to connect to the network when it is running in the background, and you may not be able to obtain location permissions and other issues

5) Add apps to the whitelist

Click the "+" icon to display the application list, select your application from the list, and then click the "Add to Whitelist" button

6) Click "Background protection whitelist" to add your app to the whitelist. The adding steps are similar to adding "power consumption protection whitelist".

b. Adding our app to the system whitelist can reduce navigation gps problems and Bluetooth disconnection problems

Start the car, the HUD host is connected to Bluetooth, enter the Smart Manager APP, click the driving monitor, long press the middle position of the car icon in the APP, enter the OBD firmware upgrade, about 1 minute, the machine will have a progress bar prompt.

If not, please power on the device again, or turn off the app and reopen the upgrade operation again.

This is a "sad story".

When we tested the tire pressure monitoring function of the T1 HUD on the city road, our left rear tire was actually pierced by a nail on the road, and then we had to end the test, Going to fix the car. The tire pressure monitoring function of the T1 was working very well.