Sorry, to be clear, it can be locked from the inside. The internal lock continues to function just fine. You just can't lock (or unlock) it from the outside.
If power goes out when away the door stayed locked. Only if one has to leave their apartment when power is out does the door not lock. Same problem happens when coming home and the power is out, door wont open. Likewise not having access to phone leaves you out of your home.
This will most likely be sorted out for this use case but Im generally concerned with this rushed innovation, there’s no fallback to a basic method.
