You can remove Skype for Business from your computer in just a few steps.
Remove Skype for Business from Android
To remove Skype for Business from your Android device, tap Apps > Settings > Applications > Application manager. Find the app and tap, and then Disable.
Note: Effective May 20, 2018, the Windows Phone app for Skype for Business will be retired and will no longer be available for download from the Windows Phone Store.
Remove Skype for Business from Windows Phone
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Swipe left to view your apps list, and then scroll down to Skype for Business.
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Tap and hold the Skype for Business icon, and then tap Uninstall.