07:00, Tue, Sep 2, 2025 Updated: 10:27, Wed, Sep 3, 2025 If you are an O2 customer with a pay as you go SIM card lodged in your phone, you might soon notice two changes coming to your handset. Luckily ...

Steve Athwal, CEO and Founder at The Big Phone Store, said: "When O2 turns off 3G, phones relying on it will lose mobile data ...