The firm said there was a 12% drop in January 2018 compared to the corresponding month a year prior.
Counterpoint research director Jeff Fieldhack said there were a few reasons for the downward trend.
"First, there were no flagship stockouts exiting 2018. There were near normal premium device channel inventories," he said.
In other OEM news during January, Apple gained 1% in US market share with the sales mix shifting to the iPhone XR, with the display and lower price being driving factors.
Other notable developments:
- Samsung’s Note 9 was the top-selling Android smartphone, but despite a continued strong showing by the Galaxy S9, Samsung lost some share as many consumers wait for the S10.
- LG gained share with decent V40 sales. However, most of the gains were because of LG devices were selling well within pre-paid — such as the LG Stylo 4.
- Motorola was hurt by the continued weakness within pre-paid. The E5 variants remain the company’s top-sellers and remain very successful within Boost, Metro and Cricket.
- ZTE volumes are still a small fraction of what they were before the US sanctions. But the company launched a new device within Verizon pre-paid channels, the ZTE Visible R2. More carrier launches are expected in 2H2019.
- The top-selling premium price tier devices (above US$600) continued to be Apple and Samsung. The Google Pixel 3 was a distant third.