Given the growing number of Wireless Devices, and the increasingly varied characteristics (including for example screen size, color depth support, audio and video support, etc.) that Wireless Device vendors or manufacturers provide within their Wireless Devices, an infrastructure that various entities (such as for example Content Providers, Service Providers, etc.) may use to quickly retrieve a quality-controlled User Agent Profile based just on a Wireless Device's Telephone Number. The infrastructure may optionally leverage the capabilities of a centrally-located Messaging Inter-Carrier Vendor.