In face-to-face communication there is immediate feedback as compared to the other forms of communication. It gives a personal touch in an appreciations or critics. However, in these form of communication there is no privacy since someone can overhear a conversation. There is no record in face-to-face communication like there is in written communication.
If you do not have good interpersonal skills, then you cannot communicate effectively.
Once you have said something, you cannot take it back.
There is less time to answer the person's question, so it requires ability to answer rapidly.
Long speech cannot be made
Noise, distortion can make the communication ineffective.