Mobile may be the key to Facebook's growth and success at this time, but that may change soon, Piper Jaffray's Gene Munster said Thursday.
"Seventy-three percent of [Facebook's] total revenue was mobile in the March quarter; that compares to 69 percent in the December quarter. The crazy thing about this is that, just a few years ago, Facebook was [going public] and investors wondered if they would ever make money out of mobile," the analyst said on CNBC's "Squawk Alley."
The company's monthly active users (MAUs) were 1.44 billion in March—a 13 percent year-over-year rise. Mobile MAUs were 1.25 billion for that month. Both of those MAU figures topped StreetAccount consensus estimates of 1.43 billion and 1.23 billion, respectively.
"At some point, [however] we're going to reach a level where it's just not going to go any higher [and] that's probably going to be about 80 percent. Naturally, the story is going to shift into other platforms that investors are well aware of like WhatsApp, Instagram and Oculus," he added.
Munster made his remarks one day after the social media behemoth posted quarterly earnings per share slightly above Wall Street's expectations but missed in revenues.