I have changed my APN settings but I can’t make outgoing calls or connect to the Internet.
If you have asked for your roaming to be activated and have adjusted your APN settings, but are unable to make outgoing calls or connect to the Internet when you arrive in your destination country, you may have to manually change the mobile and type of network you are connected to. Select the model of your device and follow the step-by-step guide: Samsung Iphone Xiaomi Huawei Oppo Blackview