iPhone 18 Pro Max IMEI Check: A3473 and Lock Status
Brand new, often still on a payment plan, and easy to confuse with last year's Pro Max. Match the A-number, then see how 56 phones read.
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A 2026 flagship with a 2 TB top end
Apple introduced the iPhone 18 Pro Max in 2026. Apple's "Identify your iPhone model" page (read 10 November 2026) lists capacities of 256 GB, 512 GB, 1 TB and 2 TB in Black, Silver, Glacier and Burgundy. Apple's spec sheet is at support.apple.com/en-us/148591.
Last year's 17 Pro Max is the model it is most often confused with in listings. The model number tells them apart immediately: A3257 is the 17 Pro Max, A3473 the 18 Pro Max in the same US market.
| A-number | Sold in (Apple) |
|---|---|
| A3473 | United States, Puerto Rico, Japan, Guam, US Virgin Islands, Canada, Mexico, Saudi Arabia, UAE, Oman, Kuwait, Bahrain, Qatar |
| A3717 | Other countries and regions |
| A3718 | Mainland China |
Almost all checked from the United States
We first saw this model on 18 September 2026. Counts below are distinct handsets to 10 November 2026; groups under ten are hidden.
| iPhone 18 Pro Max result | Devices | Share of 56 |
|---|---|---|
| Locked to a carrier we can read | 40 | 71 % |
| Unlocked | 16 | 29 % |
Fifty of the 56 came from the United States, so this is a picture of the American secondhand and trade-in market, not a global one. The lookups were answered from carrier data, which means they lean towards T-Mobile and Metro customers; a phone on another network may not appear here at all.
Two in three locked at this stage of a launch is what you would expect: buyers pay in instalments and the carrier keeps the lock until the last one. The 16 unlocked phones are the ones to ask about, since an unlocked new flagship is either bought outright or paid off early.
Before you pay
- Open Settings, General, About. A US phone shows A3473; anything else should match the country the seller says it came from.
- Check capacity and colour against Apple's list: no 128 GB exists, and the only finishes are Black, Silver, Glacier and Burgundy.
- Ask for the IMEI by dialling *#06# on camera, then run the blacklist check and the carrier lock check.
- Do not pay until the seller signs out of their Apple Account; the iCloud lock page shows how.
Specs and model numbers are Apple's; counts are ours and change as more phones are checked.
Questions people ask
What are the model numbers of the iPhone 18 Pro Max?
Apple lists A3473 for the United States, Puerto Rico and a long list of other regions (Japan, Guam, Canada, Mexico, Saudi Arabia, UAE, Oman, Kuwait, Bahrain, Qatar and the US Virgin Islands), A3718 for mainland China and A3717 for every other country or region. Apple's table also prints A3716 inside the first entry; it is unclear whether that is a typo, so we do not rely on it.
Does the iPhone 18 Pro Max have a SIM tray?
Not in the United States, Puerto Rico or the other regions Apple names for A3473. Elsewhere there is a nano-SIM tray on the left side.
Which capacities and colours exist?
Apple lists 256 GB, 512 GB, 1 TB and 2 TB, in Black, Silver, Glacier and Burgundy.
How many iPhone 18 Pro Max phones read locked?
In the 90 days to 10 November 2026 we saw 56: 40 read locked and 16 read unlocked. None returned unknown, because these lookups were answered from carrier data.
Is it safe to buy one used right after launch?
A phone this new is usually still on an instalment plan. A locked phone with a balance can be blocked by the carrier, so ask for proof the plan is paid off and run a blacklist check before paying.