Ive tested Ring, Hikvision, cheapo Chinese, dahua doorbell and Dahua telephone entry, they all ring your phone via an app but none unlock the phone.
Yeah the call goes though but it doesnt unlock the phone, even when Im on a call I have to use my fingerprint if i need to unlock it. If an app unlocked phones it would be a big security risk. It can be made to unlock the phone using Tasker but I dont like the idea of my phone being insecure in any way with bank apps and other financial apps like wechat and Revolute on it, its changed from being a phone to being a personal computer, that I holds more than just my phone contacts.