How to Perform Facebook Number Detection: Number and Email Activation, UID Gender & Avatar Retrieval, and List Cleaning Order

This article addresses the low match rate pain point encountered by cross-border teams when building Facebook Custom Audiences and cleaning CRM lists. It breaks down the field boundaries and privacy limitations of Facebook number activation, email activation, UID, and profile gender/avatar detection, and provides a complete execution order from E.164 format standardization, deduplication to layered screening.