{"format":"roamzo-esim-compatibility/v1","language":"en","updatedAt":"2026-11-10","publisher":"Roamzo","methodology":"https://esimsupportedphones.com/sources","device":{"id":"iphone-duo","brand":"Apple","name":"iPhone Duo","category":"phone","support":"supported","note":"eSIM hardware supported. The mainland China A3721 version can install a foreign travel eSIM only while outside mainland China with location services enabled. Other market versions have their own activation options. Confirm carrier unlocking and provider acceptance.","modelNumbers":[{"number":"A3447","configuration":"phoneEsim","label":"iPhone with eSIM","support":"supported","note":"Apple identifies this iPhone version as eSIM-capable. Check carrier unlocking and that your provider accepts the device.","url":"https://esimsupportedphones.com/devices/iphone-duo#model-a3447","dataPath":"/data/v1/hardware/a3447.json"},{"number":"A3719","configuration":"phoneEsim","label":"iPhone with eSIM","support":"supported","note":"Apple identifies this iPhone version as eSIM-capable. Check carrier unlocking and that your provider accepts the device.","url":"https://esimsupportedphones.com/devices/iphone-duo#model-a3719","dataPath":"/data/v1/hardware/a3719.json"},{"number":"A3720","configuration":"phoneEsim","label":"iPhone with eSIM","support":"supported","note":"Apple identifies this iPhone version as eSIM-capable. Check carrier unlocking and that your provider accepts the device.","url":"https://esimsupportedphones.com/devices/iphone-duo#model-a3720","dataPath":"/data/v1/hardware/a3720.json"},{"number":"A3721","configuration":"mainlandPhoneEsim","label":"Mainland China version","support":"supported","note":"This iPhone can install a foreign travel eSIM outside mainland China with Location Services turned on. Check carrier unlocking and provider acceptance.","saleMarket":"CN","foreignPlanInstallation":{"location":"outside-mainland-china","locationServices":"required"},"url":"https://esimsupportedphones.com/devices/iphone-duo#model-a3721","dataPath":"/data/v1/hardware/a3721.json"}],"foreignPlanPolicy":{"saleMarket":"CN","requiresInstallationOutsideMainlandChina":true,"requiresLocationServices":true,"sourceIds":["apple-china"]},"sourceIds":["apple-china","apple-models","apple-sim-types"],"reviewedAt":"2026-11-10","updatedAt":"2026-11-10","url":"https://esimsupportedphones.com/devices/iphone-duo","path":"/devices/iphone-duo","dataPath":"/data/v1/devices/iphone-duo.json","dataUrl":"https://esimsupportedphones.com/data/v1/devices/iphone-duo.json"},"sources":[{"id":"apple-china","title":"Apple · eSIM on iPhone in China mainland","url":"https://support.apple.com/en-us/123879"},{"id":"apple-models","title":"Apple · Identify your iPhone model","url":"https://support.apple.com/en-us/108044"},{"id":"apple-sim-types","title":"Apple · SIM types by model","url":"https://support.apple.com/en-us/118569"}]}