2025-09-05 00:00:00 Phoenix Wireless Digital Assistant 4.0™ (WDA) App 4.0 is a fully integrated product designed for today’s law enforcement professionals. WDA App 4.0 is a robust product providing all available system information to the officers on the street. If information truly is power, WDA App 4.0 is the most powerful mobile application available today. Greatly enhances officer safety by providing officers unprecedented mobile options without the cost, or the bulk, of a laptop.. Integrated AVL, mapping, and automatic routing information.