iPhone 7 Plus Taptic Engine not working properly

Hello mingjianfromflushing,

Thanks for using Apple Support Communities. It sounds like you’re having issues with the home button on your iPhone. I’m happy to help.

If you did not do this previously, I suggest restoring your iPhone in recovery mode and then setting it up as new (without restoring from a backup) to see if the issue persists. If you need, you can find instructions for doing so here:

If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support

If you’ve already done this, or if the issue persists afterward, you’ll want to bring your iPhone into an Apple Store or Apple Authorized Service Provider for further assistance.

You can also contact Apple Support to set up service.

Cheers.