There are two issues.
A. Keeping a beard.
B. Using electric shavers.
There are those who are noheig to keep a beard. I am not aware of anyone who says it is m’dina.
The use of electric shavers is questionable. Some compare it to a razor. Some allow only certain models or types. Some require the blades to be dulled.
Many people in the major yeshivos actually do not shave and will only trim or use powder. (Trimmers are not commonly considered a razor.)