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Upcoming impact identified on iOS devices for MobileConnect for Vonage Enterprise (September 15, 2021)

What is the impact?

If you have PennFlex Phone users that are using Mobile Connect for the Vonage Enterprise app on their Apple iOS devices, they will experience intermittent authentication failures to the app after upgrading to iOS 15. 

What do we need from you? 

We strongly recommend that you notify your PennFlex Phone users that they should upgrade to Vonage Enterprise version 23.9.24, preferably before upgrading their Apple iOS devices to iOS 15. It is expected that both Vonage Enterprise version 23.9.24and iOS 15 will be available on or about September 15, 2021.

  1. Download MobileConnect for Vonage Enterprise from the Vonage Downloads page or locate and download the Vonage Enterprise app from the iPhone App Store. NOTE: You must have system permissions to install/uninstall applications on your device. 
  2. Once the app is installed, if prompted, click Accept or I Agree to the terms and conditions of the EULA. 
  3.  In the Username field, enter your, where pennkey is your PennKey username. If you see the Cluster field, click on that field and select Production. NOTE: Only one phone number can be associated with a PennKey. 
  4. Click Continue to be redirected to WebLogin single sign-on (SSO). 
  5. You may be prompted to allow the app to access your personal contacts, to take pictures and record video, or to access media on your device, make and manage phone calls, or to access the device’s location. Select Allow. NOTE: If you do not allow them initially, and you are required to use them for later functionality, you will be prompted again. 
  6. On your mobile device, enter or confirm your cell phone number. This is required.


Please reach out to ISC Client Care at if you have any additional questions or concerns.