Shipments dropped to about 205 million, a 5 percent slide from the previous quarter. Apple's iOS and modified "forked" Android systems cut into the dominant model's market share.
"Google's Android is being attacked by Apple's iOS at the high end and forked Android and AOSP at the low end in high growth emerging markets," said ABI's Nick Spencer in the report.
iPhone sales ballooned to 74.5 million in the quarter, a gain of about 90 percent from the third.
Google did not immediately respond to CNBC's request to comment on the shipment numbers.