Tap the sign next to the number you want to unblock. On Landlines
If the number still cannot reach you, check if you have settings like (iOS) or Do Not Disturb turned on, as these features block calls from outside your contacts list. To help give you the exact steps, tell me: What brand and model of phone are you using? how to unblock someones number
If you're using a specific device or service (like a VoIP service), you might need to consult the user manual or contact customer support for tailored instructions. Tap the sign next to the number you want to unblock