According to ChangeWave Research, which surveyed 4,061 people in North America,  1 in 2 smartphone shoppers, or 50%, plan on buying an iPhone in the next 90 days. That’s down from 71% last quarter the consumer spending research service observed, but likely due in part to the initial burst of iPhone 5 purchases when the device launched. “Historically speaking, it’s a solid showing for Apple (AAPL),” the report goes on state. (Indeed, that’s the same level of demand recorded last summer.)

MORE: Did Apple really cut orders for iPhone 5 parts?

Meanwhile, demand for Samsung devices has reached an all-time high. Now 21% of users say their next phone will come from the Korean handset-maker, an 8-point climb from last quarter. Why the surge? It seems more and more potential smartphone owners like their devices on the bigger side. Indeed, 23% of Samsung buyers want the 5.5-inch Galaxy Note II, which hit shelves last month. And generally speaking, more than 1-in-4, or 27% of shoppers prefer displays 5-inches or larger. It seems that with increased data speeds and usage, some smartphone owners prefer the larger screens afforded by the emerging “phablet” category.

Here’s a look at Apple versus Samsung smartphone demand from the last four years.