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eSIM Clarity

SOURCED DEVICE RECORD

iPhone Duo eSIM support: sourced device record

Check region or variant. Apple lists the mainland-China model A3721 in its China eSIM guide, but its general iPhone model list does not yet identify this model. Confirm the model with Apple before buying a plan.

1 models coveredManufacturer sourcesReviewed October 19, 2026

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Apple: Using eSIM in China mainland (opens in a new tab) · Record checked 2026-10-19. The sourced device details remain available below.

iPhone Duo

Check region or variant

Apple lists the mainland-China model A3721 in its China eSIM guide, but its general iPhone model list does not yet identify this model. Confirm the model with Apple before buying a plan.

Model numbers in the sourced record: A3721.

Documented purchase markets: China mainland. An unlisted market is unverified in this catalog, rather than an automatic “no”.

Apple: Using eSIM in China mainland (opens in a new tab) · Checked

Additional model and market sources

Check this exact model, purchase region and carrier lock

CHECK ON YOUR PHONE

Confirm the device in Settings

On iPhone

Open Settings → General → About. Tap Model Number for the A-number. Under Carrier Lock, “No SIM restrictions” is Apple’s unlocked indication. Look under Cellular or Mobile Data for Add eSIM.

Apple: unlock requirements (opens in a new tab)

An EID indicates eSIM hardware. It does not prove the phone is unlocked, that every provider will accept it or that a plan includes coverage at your destination. Do not send us your IMEI, EID or account details.

These records use manufacturer documents, with no remote inspection or hands-on activation testing. Read how the compatibility checker works.

Browse Apple compatibility guides.