"The President and Prime Minister discussed the economic situation in Europe, as well as preparations for the June 18-19 G-20 Summit in Los Cabos, Mexico," the White House said in a statement.
Obama also commended Cameron for the Special Forces raid over the weekend that freed several hostages in Afghanistan, including a British aid worker, it said.
"Finally, the President reiterated his congratulations to Her Majesty, the Queen, on the occasion of her Diamond Jubilee," the White House said.