O2 VoLTE: locating any customer with a phone call
Using VoLTE to route phone calls via SIP from mobile phones, using O2 in the UK, exposed cell site triangulation info on both ends of the connection, allowing a remote phone number's location to be discovered.
This was investigated using "an application known as Network Signal Guru (NSG) on [a] rooted Google Pixel 8".
Tags: phone privacy security infosec o2 volte sip phones mobile