How To Remove International Call Barring - O2 100%

Due to UK/EU anti-fraud regulations (PSD2), O2 requires a verified identity for international calling. If you bought a SIM from a vending machine, international calling is blocked until you register your ID online or in-store. You aren't removing a technical bar; you are removing a KYC (Know Your Customer) hold.

Remove the O2 barring, but immediately install a VoIP app (Skype, Viber, or Google Voice) and block international calls at the phone level . Go to Settings > Screen Time > Content & Privacy Restrictions > Cellular Changes > Don't Allow. Then, allow only VoIP apps to dial internationally. how to remove international call barring - o2

Here is the deep technical and procedural dive into how to dismantle that barrier. Before we get into the codes, let’s understand the why . O2, like all Mobile Network Operators (MNOs), is terrified of three things: Premium Rate Fraud, SIM Swapping exploits, and Bill Shock. Due to UK/EU anti-fraud regulations (PSD2), O2 requires