Update README.md

README.md

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 # ⚠ Caution ⚠
 This app tests your download speed **indefinitely**. That means that it literally starts a download that **DOES NOT STOP** until you close the app.  
+## Use case
+Really anything that involves measuring the performance and/or gathering the details of your cellular connection.
+For example, you signed up for a cellular home internet service and you need to know where, in your home, your cellular connection performs the best. Though thats assuming that the modem in your phone is substantially similar to your cellular home internet modem.
+## Output
+In addition to the screenshot below, the app also writes a csv file that gets saved in ```/Android/data/org.nanick.cellconnection/files/``` as ```$(epochTimeStamp).csv```.  
 ## Screenshot
 ![](https://raw.githubusercontent.com/nstevens1040/images/main/Screenshot_20231226-071820.png)