Although it's been selling a lot of iPhone 6 and iPhone 6 Plus units, Apple doesn't like to break down the numbers by model. So effectively we have no way of telling how many of those millions of units moved are iPhone 6 or iPhone 6 Plus.
Not an official way, at least, because now Consumer Intelligence Research Partners has produced a report which attempts to estimate just that - what percentage of iPhones sold are the smaller iPhone 6, and the bigger 6 Plus.
And it turns out that, at least in the US, the 4.7" handset is winning in terms of sales. For the first 30 days of availability of the two new devices, the iPhone 6 accounted for 68% of all iPhone sales, while the iPhone 6 Plus had to make do with a share of just 23 to 24%.
Together, the new iPhones made up around 91% of all iPhone sales in that month, with the additional 9% represented by the older iPhone 5S and iPhone 5C.
Last year, those two - which were then the new kids on the block - represented 84% of total iPhone sales after their first month of availability. So it looks like people are more interested in the iPhone 6 models than they were in the 5S and 5C in 2013, which makes sense considering how they're both bigger than all of their predecessors.
The researchers also looked at the average storage capacity of the iPhone 6 models sold in the first month, and found it to be 48GB. That's almost doubled since last year, undoubtedly aided by Apple's dropping of the 32GB models, and offering the iPhone 6 and iPhone 6 Plus in 16, 64, and 128GB iterations only.