What Is Caller ID Spoofing? Caller ID spoofing refers to the act of changing the phone number that appears on a recipient's device when they receive a call. This technique is often used to display a different number than the one actually used to make the call. With the rise of VoIP (Voice over IP) and cloud-based telecom platforms, caller ID spoofing online has become more accessible—especially for users in Hong Kong seeking privacy, anonymity, or custom business branding. Why Do People Spoof Caller ID in Hong Kong? In Hong Kong, individuals and businesses may look for online caller ID spoofing services for various reasons: ✅ Business Branding: Display a recognizable customer service number even when calling from a mobile or VoIP line. ✅ Privacy Protection: Hide your personal number when contacting unknown recipients. ✅ Testing & Debugging: Developers and security testers may use spoofing to simulate scenarios during telecom audits. ✅ Fun & Pranks (⚠️ not recommended): Some users explore spoof apps for entertainment—though misuse may lead to legal consequences.