Here are some OneCloud Mobile 3.0 update release notes you should become aware of:
Added the ability to have group chats inside OneCloud Mobile.
Added support commas and semicolons used for "pause" and "wait" times when saved as part of contact phone numbers.
Rewrote the code that handles how Push notifications are handled in OneCloud Mobile to resolve bugs and improve performance.
Added support for sending and receiving multimedia messages. (Additional subscription is required.)
Improved audio playback quality for system-wide audio prompts.
Added the ability to sort contacts by their "Online" status, by first or last name, or by extension number.
Changed OneCloud Mobile's default voicemail playback behavior to match that of the native iOS Phone application. If a Bluetooth device is connected, voicemail playback will default to Bluetooth. If no Bluetooth device is preset, voicemail playback will default to the phone's earpiece but can be toggled to playback through the speakerphone.
Resolved a condition that could cause poor Bluetooth audio quality when playing back voicemails.
Incrementally improved support for the iOS system-wide dark mode by improving the visibility of icons and dialogs when the system is set to use dark mode. Note, this is not yet full dark mode support.