How can I open it if my phone runs out of battery?
In our customers' experience, and given the importance of cell phones in our lives today, it's becoming less common for us to run out of battery without having a simple way to fix it with a charger of some kind. Unlike a garage door opener, which is often more difficult to recharge when it runs out of battery than a cell phone.
In any case, the current opening system will continue to work (remotes or garage keys) so you can use these in an emergency if you wish.
In any case, the current opening system will continue to work (remotes or garage keys) so you can use these in an emergency if you wish.