What should I do if the Mtp USB installation fails on the Win7 connected phone?

The Win7 system computer connected to the phone has a solution to the Mtp USB installation failure.

The specific steps are as follows:

Step 1: Open [Settings] in the phone and enter the [Settings] interface. as the picture shows.

Step 2: Find the phone [Settings] interface. Find [About Phone] below and click inside.

Step 3: Find [Mobile Phone Configuration Information] on the [About Mobile Phone] interface. Click on

Step 4: Find the [Version Number] in the [Mobile Phone Configuration Information] interface, and click continuously. The version number is five times until the prompt (you are in developer mode, no need to do this)

Step 5: Return to the phone [Settings] screen, find [developer options] and click inside.

Step 6: In the [Developer Options] screen, find [USB Debug] and check the box next. As shown in the figure! After setting, the phone can be reconnected to the computer!