Calculated using the UserAgent metric in QoE ClickStream.
This metric performs well on large datasets but has nuances in certain cases:
-  In QoE, the number of devices is determined only for those that were active on the Internet during the data collection period. The longer the period, the more accurate the data. 
-  Not all devices are detected by this metric, and some devices may generate multiple different UserAgents when using several applications simultaneously. 
To obtain data in the QoE Analytics section:
-  Go to the ClickStream section  
-  Select “Top subscribers” and “Default” from the list of standard reports on the right  
-  Select the “Devices” column in the statistics table. This column shows the approximate number of devices per subscriber.  
-  For convenience, you can perform various actions with this metric: - 
-  Apply a filter to the number of devices — for example, select subscribers with 3 to 10 devices.  
-  Export this list of subscribers to .xls and perform further analysis in your preferred application.  
 
Important: the longer the selected ClickStream period, the more accurate the data. It is recommended to choose a period of at least 24 hours.
