I think this map compiled by Open Signal Maps basically shows how fragmented Android devices can be. You are looking at 1363 different devices compiled in the 6 months by over 61,000 participants.

If you can understand the model numbers, many of them are Samsung devices (GT) and based on brand compilation, here is the results.

There are other details like Android versions, screen sizes and etc.

Click Here to Check Out the Android Devices Compilation

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