Rooting your phone requires you to be extra careful because a lot of things could go wrong if you make a single mistake during the rooting process , thats why some android users choose not to root their phone..But If eventually you decide to root for the first time , u'ld need to backup your apps just incase anything goess wrong.

Today , i'ld Guide you on how to backup your apps on un-rooted phone.

•Firtstly , You'ld Need To Install This App On Your Phone..This App I Called Astro File Manager and is noted as one of the best apps in android store

•Next , Run And Open The Application After Downloading

•Select the” Backup Application ” option.

•Now then you will be seeing the apps that have been installed on your phone. Select the apps that you want to backup by checking on them.

•Once you are done selecting the apps, click on the Backup Button and the app will be generating a backup for it.

•And as far as restoring is concerned, when you are finished with your root process, and go to the Backup Apps tab.

•And choose the apps which you want to restore, and then select the install button.

•You can find this app in your
maindirectory/backup/app.

Source : http://androidnigeria.com.ng/how-to-backup-apps-on-your-unrooted-android-phone/