How to check what carriers and countries work with your iPhone Check your iPhone model. Head to Settings → General → About → and tap on Model. For more recent iPhones, use that model number to check your country and carrier compatibility at Apple's support document (note: there are multiple models for the same iPhone) How to check what carriers and countries work with your iPhone Check your iPhone model. Head to Settings → General → About → and tap on Model. For more recent iPhones, use that mo... Read more