Apple’s lead over Samsung in the U.S. widened in April by Philip Elmer-DeWitt @FortuneMagazine May 4, 2013, 2:33 PM EDT E-mail Tweet Facebook Google Plus Linkedin Share icons Data: comScore. Chart: Brian Loftus. Click to enlarge. FORTUNE — Google’s GOOG Android, at 52%, took the largest share of U.S. smartphone sales in the three month period (Jan. – Mar.) covered by comScore’s report Friday. But it managed to lose 1.4 percentage points sequentially, while Apple AAPL , at 39%, gained 2.7. In the Apple vs. Samsung competition, Apple widened its U.S. lead, which now stands at 39% to 21.7%. But as Brian Loftus’ chart above shows, Apple is not widening that lead quite as fast as it had been in recent months. Outside, the U.S., it’s a different story. See The mobile world according to Kantar. Below the fold: comScore’s spreadsheets.