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Controlling the vacuum by phone is optional. It will work with a push of a button on top of the device. All it needs is to be charged before each use and it will run for about an hour. I myself have had this for 3 months and have never used the app or programmed it with my phone.
Sorry, there was a problem. Please try again later.Just returned a 891 that was acting up after a week of use. I’d say go with a 900 series.. They seem better
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