3- Go to Settings, open Application Manager and then open Google Search app. Now tap on “Clear data” or Clear Cache. Once you clear cache of data of the app, problems related to it will be solved. … Sometimes the faulty updates result in Google search widget not working problem in Android phones.
For More Information Please Refer: https://community.adobe.com/t5/phonegap/fix-google-search-bar-widget-not-working-in-galaxy-s7-s3-and-other-android-phones/td-p/9874910