Bests & Worsts Reviews from Amazon

I purchased the Yi 4 pk. 1080 Indoor security cameras. I was skeptical but am so glad I took the chance. I placed them in various windows facing outside as it’s outside I want to observe. They work perfectly during the day and, where the outside area is lit, at night. If the area is not lit, there is a reflection on the glass from the IR light, but they ARE designed to be indoor cameras. They work very well indoors, day and night, as intended. I have observed some sketchy people that have rung my doorbell when I’m not home (I have a camera in the window next to door), along with the neighbor’s cat, a family of raccoons, an opossum and numerous squirrels. I had an issue where they stopped alerting me of activity (which I see some others have had, also) and contacted Yi customer service. They promptly replied to my request and worked with me to make sure all my phone settings were correct. Turned out, the problem was with my phone settings, battery saver shutting down the app, NOT with the cameras or their app. I especially love that I can insert my own sd cards to save & view past events and not have to pay for ‘cloud’ subscription. I don’t know of another security camera that offers this. I couldn’t be happier with this purchase! In fact, I ordered another set of 4. If you are still in doubt, look up some reviews and comparisons of the Yi cameras on youtube.