diff --git a/exp/textinput/textinput_js.go b/exp/textinput/textinput_js.go
index 436eaae00..dba3e5c86 100644
--- a/exp/textinput/textinput_js.go
+++ b/exp/textinput/textinput_js.go
@@ -78,14 +78,14 @@ func (t *textInput) init() {
 			e.Call("preventDefault")
 		}
 		if !e.Get("isComposing").Bool() {
-			ui.UpdateInputFromEvent(e)
+			ui.Get().UpdateInputFromEvent(e)
 		}
 		return nil
 	}))
 	t.textareaElement.Call("addEventListener", "keyup", js.FuncOf(func(this js.Value, args []js.Value) any {
 		e := args[0]
 		if !e.Get("isComposing").Bool() {
-			ui.UpdateInputFromEvent(e)
+			ui.Get().UpdateInputFromEvent(e)
 		}
 		return nil
 	}))
diff --git a/internal/ui/input_js.go b/internal/ui/input_js.go
index e76d5594c..d1514d8f0 100644
--- a/internal/ui/input_js.go
+++ b/internal/ui/input_js.go
@@ -223,8 +223,8 @@ func (u *UserInterface) KeyName(key Key) string {
 	return n.String()
 }
 
-func UpdateInputFromEvent(e js.Value) {
-	theUI.updateInputFromEvent(e)
+func (u *UserInterface) UpdateInputFromEvent(e js.Value) {
+	u.updateInputFromEvent(e)
 }
 
 func (u *UserInterface) saveCursorPosition() {
diff --git a/internal/ui/ui_ios.go b/internal/ui/ui_ios.go
index 74e014e96..2249c370d 100644
--- a/internal/ui/ui_ios.go
+++ b/internal/ui/ui_ios.go
@@ -65,12 +65,12 @@ func (g *graphicsDriverCreatorImpl) newMetal() (graphicsdriver.Graphics, error)
 	return metal.NewGraphics()
 }
 
-func SetUIView(uiview uintptr) error {
-	return theUI.setUIView(uiview)
+func (u *UserInterface) SetUIView(uiview uintptr) error {
+	return u.setUIView(uiview)
 }
 
-func IsGL() (bool, error) {
-	return theUI.isGL()
+func (u *UserInterface) IsGL() (bool, error) {
+	return u.isGL()
 }
 
 func (u *UserInterface) setUIView(uiview uintptr) error {
diff --git a/mobile/ebitenmobileview/view_ios.go b/mobile/ebitenmobileview/view_ios.go
index 835f7ada3..4d5efb773 100644
--- a/mobile/ebitenmobileview/view_ios.go
+++ b/mobile/ebitenmobileview/view_ios.go
@@ -19,9 +19,9 @@ import (
 )
 
 func SetUIView(uiview int64) error {
-	return ui.SetUIView(uintptr(uiview))
+	return ui.Get().SetUIView(uintptr(uiview))
 }
 
 func IsGL() (bool, error) {
-	return ui.IsGL()
+	return ui.Get().IsGL()
 }