Recently Angela Merkel and François Hollande learned that the U.S.'s NSA is alleged to have tapped into tens of thousands of Germany's and France's citizens' phones - including it is said the personal mobile phones of the both the German Chancellor and the French President.
Most people are unaware of the degree to which they become "nonverbally naked" when they're talking on the phone. Facial expressions become more pronounced and body language becomes more exaggerated. This phenomenon occurs with otherwise socially adept and experienced professionals (e.g., physicians, attorneys, senators, heads of state, etc.). Thus during such moments it is possible to observe these amped-up, often melodramatic signals in the context specific speech and glean valuable emotional tells. Intriguingly, the moment the individual gets off the phone, their psyche and body language returns to a different, non-telephonic baseline. If care is taken to observe their nonverbal details, patterns and idiosyncrasies during the phone conversations - the subtleties and nuances when they're off the phone becomes much easier to see. It's like seeing the (real) man (or the woman) behind the curtain. The camouflage is lifted.
Tell us what you really think Angela ...
Nonverbal Communication Analysis No. 2539: Calvin Johnson, the Index Finger and Alpha Behavior - A Body Language Tell of Mobile Phones
Negotiation Body Language Secret # 341: Narcissism, Parking and Cell Phones
Negotiation and Dating Secret # 111: The Great Phone Tell
Nonverbal Communication Analysis No. 2533: Angela Merkel's Low Steeple "Trademark" - A Major Body Language Mistake
Negotiation Body Language Secret # 741: Pencil in Mouth
Leadership Secret # 222: Angela Merkel - Palms Down vs. Palms Up
Negotiation secret # 301: Angela Merkel's Expressions of Fear