Q:

PubNub UUID showing different results in dashboard

We implemented PubNub and we set UUID. Yesterday I tested it. I used only 2 iPhones, but here are 15 Daily Active Devices and around 16 Peak UUIDs. We hardcoded UUID for our 2 iPhones "iPhone4S" and "iPhone5C", but still Daily Active Devices and Peak UUIDs were showing 10+.
Can someone help us with this. We even compared with PubNub's demo app and it's the same. I don't know why is this happening, why we have Peak UUIDs showing 10+ when we hardcoded 2 values.

A:

PubNub UUID - Create, Set, Store, Get & Reuse
For accurate active device counting and tracking, PubNub uses unique IP addresses by default. However, a more accurate way to do this is with UUIDs.
With the exception of the JavaScript SDK & iOS SDK (as of this writing), PubNub's SDKs generate a new UUID with every initialization/instantiate of the PubNub. So you can end up with a client device or server process reporting several different UUIDs each day.
Many developers will generate, locally store and reuse a UUID for the client applications but forget to do this on the server side processes that use PubNub, as well.
For more details about UUID generate/store/reuse with PubNub, please read PubNub KB article How Do I Set the UUID.

