There are different ways to quickly access favorite contacts on Android devices to make a call or text. Add a direct call shortcut to home screen on HTC 10, by doing as follows:
1. Go to the Home Screen (Simply press the home button to go the default page of the home screen)
2. Press and hold your finger on an empty spot to open the Personalize menu
3. Select the Add Apps and Widgets option from the menu
4. Tap the drop down menu and select the Shortcuts. (It can be set to Widgets, Apps or Shortcuts)
5. Touch the Direct Dial button
6. Now, choose the contact you want to have a direct call shortcut on the home screen with. (You may need to specify the number as well)
7. And you are all Done. head back to the home screen and to call that specific contact, you just need to press the shortcut on the home screen.