I do not know yet what with the replacement of components. It seems that somewhere in the reviews they wrote that they can not be found everywhere. Either an advantage or a disadvantage: Wi-Fi is required to connect the application, I ran into a problem in the country: there is no router, the mobile is distributed from the phone, and in this mode the vacuum cleaner cannot connect to it - it needs the phone and the vacuum cleaner were on the same network. Solved the problem using the second phone. That is, I turned on the access point on the second phone, connected my phone and the vacuum cleaner to this network, they connected normally, then switched everything back - and hooray, the devices continued to communicate on another network. ate. I've been using it for over a year now and I'm still satisfied. Rides well, collects dust and hair, easy to clean. The only drawback was that after the ate it sometimes asks to re-login (and I can hardly remember the password) and resets the card. But I have the map saved, so this is not a problem at all.
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