Resolve "Regional tel format isn't accepted"

Closes #788 (closed)

aleksis/core/settings.py

@@ -14,6 +14,7 @@ from .util.core_helpers import (
     get_app_settings_overrides,
     merge_app_settings,
     monkey_patch,
+    lazy_preference,
 )
 
 monkey_patch()
@@ -555,6 +556,8 @@ LANGUAGE_CODE = _settings.get("l10n.lang", "en")
 TIME_ZONE = _settings.get("l10n.tz", "UTC")
 USE_TZ = True
 
+PHONENUMBER_DEFAULT_REGION = lazy_preference("internationalisation", "phone_number_country")
+
 # Static files (CSS, JavaScript, Images)
 # https://docs.djangoproject.com/en/2.1/howto/static-files/