US president-elect Barack Obama is trying to work out how he can hang on to his beloved BlackBerry once he moved into to the Oval Office next year.

In an interview with Barbara Walters to air in the US on Wednesday, Obama also said he was trying to keep his BlackBerry or find another way to "break through the isolation and the bubble that exists around the president".

Obama talked about a range of topics in Tuesday's interview, including the adjustment of moving into the White House with his wife, Michelle, and their two daughters.