diff --git a/homeassistant/components/frontend/__init__.py b/homeassistant/components/frontend/__init__.py
index e6292c7de82..aa74866aeab 100644
--- a/homeassistant/components/frontend/__init__.py
+++ b/homeassistant/components/frontend/__init__.py
@@ -586,9 +586,10 @@ def _is_latest(js_option, request):
     from user_agents import parse
     useragent = parse(useragent)
 
-    # on iOS every browser is a Safari which we support from version 10.
+    # on iOS every browser is a Safari which we support from version 11.
     if useragent.os.family == 'iOS':
-        return useragent.os.version[0] >= 10
+        # Was >= 10, temp setting it to 12 to work around issue #11387
+        return useragent.os.version[0] >= 12
 
     family_min_version = {
         'Chrome': 50,   # Probably can reduce this