diff --git a/src/pretix/base/models/items.py b/src/pretix/base/models/items.py
index a606825df..dff10a149 100644
--- a/src/pretix/base/models/items.py
+++ b/src/pretix/base/models/items.py
@@ -1463,7 +1463,7 @@ class Question(LoggedModel):
         (TYPE_PHONENUMBER, _("Phone number")),
     )
     UNLOCALIZED_TYPES = [TYPE_DATE, TYPE_TIME, TYPE_DATETIME]
-    ASK_DURING_CHECKIN_UNSUPPORTED = [TYPE_PHONENUMBER]
+    ASK_DURING_CHECKIN_UNSUPPORTED = []
 
     event = models.ForeignKey(
         Event,