Apple’s iPhone 6 is outselling its bigger brother by nearly a 3-to-1 ratio. The question that looms is if the iPhone 6 is actually more popular or if supply constraints of the iPhone 6 Plus are skewing the results in favor of Apple’s smaller flagship.

According to a report from Consumer Intelligence Research Partners via Apple Insider, the iPhone 6 accounted for 68 percent of all iPhones sold in the US within the first 30 days of launch. The larger iPhone 6 Plus, meanwhile, represented no more than 24 percent of sales.

Collectively, the new iPhones accounted for about 91 percent of all iPhones sold during the period. The remaining sales were of last year’s iPhone 5s and 5c, we’re told.

During the same time period a year ago, the then-new iPhone 5s and 5c accounted for roughly 84 percent of total iPhone sales. This shows us that consumers are more interested in this year’s new models than they were a year ago.

All things considered, it’s still unclear which model is more popular among consumers for the simple fact that Apple continues to have a tough time keeping up with demand for the iPhone 6 Plus. A quick check on Apple’s website reveals a wait time of 3-4 weeks for the larger model regardless of carrier or storage capacity.