Research In Motion Ltd.’s BlackBerry smartphone lost further U.S. market share to Apple Inc. and leader Samsung Electronics Co. as new models failed to win over enough users.

RIM’s share of U.S. mobile-phone subscribers in the three months through November fell to 6.5 percent from 7.1 percent in the previous quarter, research firm ComScore Inc. said. Samsung increased its share to 25.6 percent from 25.3 percent. Apple rose to 11.2 percent from 9.8 percent, according to ComScore.

The figures are the latest evidence that BlackBerry models RIM introduced this year with touch screens and upgraded browsers haven’t stopped customers opting instead for Apple’s iPhone and devices built on Google Inc.’s Android platform, for example the Samsung Galaxy S.

This month, Waterloo, Ontario-based RIM gave sales and profit forecasts that missed analysts’ estimates and said revenue fell 6 percent last quarter to $5.17 billion.

In the November quarter, LG Electronics Inc. lost 0.5 percentage points of U.S. share to finish with 20.5 percent of the market, Reston, Virginia-based ComScore said. Motorola Mobility Holdings Inc.’s share dropped 0.3 percentage points to 13.7 percent.

RIM was little changed in early trading. Before today, the shares had lost 75 percent this year.