The unexpected continuation of calls from numbers added to a block list on devices running the Android operating system can stem from a variety of technical and network-related factors. While the blocking function aims to prevent direct contact, its effectiveness isn’t absolute due to how calls are routed and identified across telecommunication networks.
The primary benefit of call blocking is to mitigate unwanted communications, such as spam calls or harassment. The implementation of this feature is a direct response to the increasing prevalence of unsolicited and potentially harmful phone calls. However, technical limitations exist within the telecommunications infrastructure which prevent a foolproof blocking system, leading to situations where blocked numbers can still initiate contact.