Picky, picky, picky.

A gun-toting mugger in Central Park was so disappointed by his victim’s cheap flip phone that he handed it back.

“Once he saw my phone, he looked at it like, ‘What the f–k is this?’ and gave it back to me,” recalled Kevin Cook, 25, of Brooklyn.

“It’s like a 3-year-old generation Windows phone,” said Cook, a New York Sports Club salesman who was walking with a pal near the West Drive in the 60s at 12:30 a.m. Saturday.

“I guess he didn’t think he could get anything for it,” Cooke added. “It’s kind of humorous.”

The gunman, who threatened to kill Cooke and his friend, was wearing a dark-green winter coat and blue jeans. His accomplice wore his long black hair in a ponytail. Both fled before cops could catch up to them.

The theft marks the 13th robbery reported in Central Park in 2013 — the same number as last year.