Android utilizes a global spam filter. If a number is not manually blocked but calls are being screened, the number might be flagged as spam by Google's database.
Scroll down and tap Unblock (or "Remove from block list"). how to unblock calls on android
Many cellular carriers (e.g., Verizon, T-Mobile, AT&T) and third-party call-screening apps (e.g., Hiya, Truecaller, RoboKiller) maintain independent block lists. Android utilizes a global spam filter
: You will see a list of all currently blocked numbers. Tap the X or Clear icon next to the number you want to restore, then confirm by tapping Unblock . Unblocking on Samsung Galaxy Devices Samsung's One UI interface uses slightly different labels. Block or unblock a phone number - Google Help Many cellular carriers (e
Tap Settings from the dropdown menu.
If you just blocked someone and want to reverse it: