Do you want to know the easiest way to back up your contacts into an excel file? Then this app will surely help you. Backing up your phone contacts can be extremely useful, especially if you need to add the details to a database, or simply for your peace of mind. If you’re wondering how to export Android contacts to a .csv file, to use with Excel then you should download this Contacts To Excel for Android. 

You can export your Sim card details and Android contacts including names, phone numbers, and email. With the help of this app, it can generate a separate file for each SIM card you read with it.