James Corden managed to snatch his phone away just in time to stop an interviewer seeing his texts from Prince Harry.
The Gavin and Stacey star has been close to the Duke of Sussex since he moved to California with Meghan Markle - even landing his first sit-down interview after arriving in Montecito back in 2021.
The Brits abroad spent the afternoon riding round together on an open top bus ride for a segment on The Late Late Show, which will be hosted by Corden for the last time on Thursday evening.