The name of the file is {platform}.{buildType}.{suffix).
So, it will be something like android.debug.apk.
PhoneGap used to use different naming schemes for Android and iOS. VoltBuilder has a consistent way of naming the output files.
The name of the output file has nothing to do with the name on the device. That comes from the data in config.xml.
By deleting the app on the device, I mean simply that. Depending the device and version of Android, you’ll drag the app into the trash, or click and hold until a delete option appears.
It shouldn’t hang on uploads. Let me know if you notice any pattern to this.