diff --git a/product/phone/src/main/ets/phoneability/PhoneAbility.ets b/product/phone/src/main/ets/phoneability/PhoneAbility.ets
index 839d7a536d244ec214f4feb4abcd2da6bf61459a..e3c2c88c7488d007548e897a5b28438e6df7ade5 100755
--- a/product/phone/src/main/ets/phoneability/PhoneAbility.ets
+++ b/product/phone/src/main/ets/phoneability/PhoneAbility.ets
@@ -21,6 +21,7 @@ import { BaseConstants, BreakpointConstants } from '@ohos/commons/Index';
 
 export default class PhoneAbility extends UIAbility {
   private windowObj?: window.Window;
+
   onCreate(want: Want, launchParam: AbilityConstant.LaunchParam): void {
     hilog.info(0x0000, 'testTag', '%{public}s', 'Ability onCreate');
   }
@@ -35,7 +36,12 @@ export default class PhoneAbility extends UIAbility {
 
     windowStage.getMainWindow((err: BusinessError<void>, data) => {
       this.windowObj = data;
-      this.updateBreakpoint(this.windowObj.getWindowProperties().windowRect.width);
+      try {
+        this.updateBreakpoint(this.windowObj.getWindowProperties().windowRect.width);
+      } catch (error) {
+        let err = error as BusinessError;
+        hilog.error(0x00, 'PhoneAbility', `updateBreakpoint failed, code = ${err.code}, message = ${err.message}`);
+      }
       this.windowObj.on('windowSizeChange', (windowSize: window.Size) => {
         this.updateBreakpoint(windowSize.width);
       })
@@ -44,7 +50,9 @@ export default class PhoneAbility extends UIAbility {
         return;
       }
       if (deviceInfo.deviceType !== BaseConstants.DEVICE_2IN1) {
-        data.setWindowLayoutFullScreen(true);
+        data.setWindowLayoutFullScreen(true).catch((error: BusinessError) => {
+          hilog.error(0x00, 'PhoneAbility', `openSync failed, code = ${error.code}, message = ${error.message}`);
+        });
       }
     })
 
@@ -56,17 +64,24 @@ export default class PhoneAbility extends UIAbility {
       hilog.info(0x0000, 'testTag', 'Succeeded in loading the content. Data: %{public}s', JSON.stringify(data) ?? '');
     });
   }
-  private updateBreakpoint(windowWidth: number) :void{
-    let windowWidthVp = windowWidth / display.getDefaultDisplaySync().densityPixels;
-    let curBp: string = '';
-    if (windowWidthVp < BreakpointConstants.BREAKPOINT_SCOPE[2]) {
-      curBp = BreakpointConstants.BREAKPOINT_SM;
-    } else if (windowWidthVp < BreakpointConstants.BREAKPOINT_SCOPE[3]) {
-      curBp = BreakpointConstants.BREAKPOINT_MD;
-    } else {
-      curBp = BreakpointConstants.BREAKPOINT_LG;
+
+  private updateBreakpoint(windowWidth: number): void {
+    try {
+      let windowWidthVp = windowWidth / display.getDefaultDisplaySync().densityPixels;
+      let curBp: string = '';
+      if (windowWidthVp < BreakpointConstants.BREAKPOINT_SCOPE[2]) {
+        curBp = BreakpointConstants.BREAKPOINT_SM;
+      } else if (windowWidthVp < BreakpointConstants.BREAKPOINT_SCOPE[3]) {
+        curBp = BreakpointConstants.BREAKPOINT_MD;
+      } else {
+        curBp = BreakpointConstants.BREAKPOINT_LG;
+      }
+      AppStorage.setOrCreate('currentBreakpoint', curBp);
+    } catch (error) {
+      let err = error as BusinessError;
+      hilog.error(0x00, 'PhoneAbility', `getDefaultDisplaySync failed, code = ${err.code}, message = ${err.message}`);
     }
-    AppStorage.setOrCreate('currentBreakpoint', curBp);
+
   }
 
   onWindowStageDestroy(): void {