Apple’s share of AT&T’s shipments fell 26% year over year by Philip Elmer-DeWitt @FortuneMagazine May 23, 2014, 9:12 AM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons FORTUNE — Apple AAPL still dominates the U.S. market for smartphones, according to a report issued Wednesday by Counterpoint Research’s Neil Shah. But you can’t tell from the accompanying multi-color donut charts (see below) which way the wind is blowing. For that, you have to look at a few more quarters of data. They show the biggest change was at AT&T T , which saw Apple’s share of its smartphone shipments fall 25.7% — from 70% in Q1 2013 to to 52% last quarter. (See bar chart.) By contrast, Apple’s share of Verizon’s VZ shipments was basically flat, falling only 1 percentage point year over year, from 52% to 51%. Among Shah’s other findings (emphases his): Apple & Samsung together captured more than two-thirds of the smartphone market TCL-Alcatel became the fourth largest handset supplier and fifth largest smartphone supplier in USA, mainly taking share away from Huawei Android share rose to 59% of the total smartphone shipped during the quarter & Windows Phone grew to slightly under 4% Three out of four smartphones shipped during the quarter were LTE smartphones Apple & Samsung combined captured more than 70% of the LTE shipments In terms of in-carrier share for the brands, Apple dominated the big two carriers capturing more than half of Verizon & AT&T’s smartphone shipments and more than a third of smartphone shipments at T-Mobile & Sprint respectively Samsung was the top brand at T-Mobile and regional carriers while the next best performing brands were: Nokia (at AT&T), Alcatel (at T-Mobile), ZTE (at Sprint) & Motorola (at Verizon) T-Mobile (with MetroPCS) is now the third largest smartphone carrier in terms of smartphone volumes buyer closely behind AT&T overtaking Sprint platform (with all MVNOs). Uncarrier strategy is surely working for the carrier attracting a wave of new smartphone subscribers Below: How the big-four U.S. carriers divided last quarter’s share of smartphone shipments. Source: Counterpoint. Click to enlarge.