There is a one of my team members who is constantly distracted by personal communication (phone calls, messages). That started a couple of weeks ago and obviously affects his productivity.
I tried asking some general questions (whether everything is OK, if he needs any help or time off, etc.) as I did not want to be intrusive and the answer was always negative, i.e. he preferred not to share any details.
I am a tech person and since we're a small company we don't have HR to consult with or ask them to take care of that.
How can I approach this issue? Should I keep trying to talk to him to get more details? Try something else?
UPDATE 1: we do not have "no personal phone" policy and I personally do not have any problem with somebody making a personal call during work hours as long as it does not affect others or productivity.