In my opinion it has many disadvantages, for example if the call is not answered by us then how? Whether the team will repeat it or KYC is considered a failure. because sometimes we do things that make us not hold a cellphone or computer device and also when we travel it is most likely not getting a signal and that can inhibit KYC.
especially if we have to use ID, we will be more difficult because we cannot carry our ID when doing all activities.