How to set photos of mobile phone contacts?

If you use a vivo phone, please add a beautiful avatar to the contact on the phone, select the number on the phone to open it, click Edit in the upper right corner, and then click the contact's avatar to select photos from the gallery or take photos directly to set the avatar. (Only the number saved on the mobile phone can be set, and the number saved on the SIM card does not support setting the avatar. )