According to CIRP, Android retention rate is higher than that of iOS:BankMyCell is just one trade-in service of many however. Its data also conflicts with CIRP research issued in January, which pointed to loyalty rates of 91% for iPhones
So, your source also points out conflicts in other data.
In the end, 38,000 phones and a natural bias in only looking at people using one trade in service is not definitive data. It clearly doesn’t speak for the overall market, because the iPhone user base has grown, fact.
Also, Samsung sales (as they have reported) have plummeted, so not sure what benefit they’ve received from Apple switchers.

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