Your company has upgraded to the latest version of 3CX Phone System v14.
Because 3CX Phone System has significant improvements for Android users that require changes at the client side, you need to install a new version of the 3CXPhone client. You can not update the old version. To do this:
a. First you will need to uninstall the old version.
1. Go to Application Manager
2. Select 3CXPhone from the downloaded apps
3. Click Uninstall
b. Then download the new version from this link: https://play.google.com/store/apps/details?id=com.tcx.sipphone14
Once you have installed the new 3CXPhone you will need provision it using the attachment in the welcome email.