In a sneak preview uploaded earlier today (December 17), the former U.S. President joked around before the iconic interview.
Harry also told his interviewee that if he used long pauses between answers, he would probably get "the face".
Prince Harry later confessed: "You're excited about this and I'm nervous about it, that's what's quite amusing", to which Mr Obama replied: "I will interview you if you want".
A portion of the interview will drop as part of BBC's Radio 4 Today programme, with the full 40 minute chat landing as a podcast at a later time.
A weekly overview of the chatter from Kensington Palace and beyond.
"No, no, let's keep it this way", Harry said, laughing.
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Once you get the update, head over into the Settings app, tap Network & Internet, Mobile Networks, and then turn the feature on. The device features a dual camera and other similar specifications as the Xiaomi Mi 5X that is available in China.
"Oh, ok. I don't want to see that face", says Mr Obama.
Harry and Mr Obama have become big friends, forging a strong bond during the Prince's trips to America and work with servicemen.
Kensington Palace said the conversation, which airs December 27, focuses on the pair's "shared interest in building platforms for the next generation of young leaders".
Kensington Palace released a video of Obama and the prince joking around prior to the discussion.
They bonded during this year's Invictus Games, where they watched a bunch of events together and just bro'd on down.
Last year, Obama and his wife, Michelle, posted a mock challenge to Harry on Twitter, telling him to "bring it" before the 2016 Invictus Games.