How can I block SMS? Whoscall Service Center September 10, 2020 07:09 If you want to block SMS by using Whoscall, please go to “Settings” and tap "Enable SMS feature". Related articles Why do I still receive calls from the blocked numbers? Why do I still get voicemails from numbers I blocked? Why can't I receive the verification code (SMS) ? Why didn't the Caller ID dialog appear when there was a phone call? How can I block specific phone numbers (i.e. unknown numbers, international phone numbers...)? Comments 0 comments Article is closed for comments.