Is the all-green Aisi Assistant the original device?

1. First, let’s figure it out: What exactly is AISI “all green” comparing to?

When each iPhone leaves the factory, its screen, battery, front and rear cameras, Face ID module and other core components have a set of unique serial numbers bound to the motherboard and written into the underlying chip of the device. The core action of AISI Assistant's machine inspection is only one: compare the serial numbers of each component currently read from the device with Apple's factory database (and the factory values ​​recorded by AISI itself) one by one.

• Read value = factory value→ This item displaysgreen, determine "original/not replaced";
• Read value ≠ factory value→ This item displaysred or abnormal, determine "suspected replacement".

If all the major items are in line, it will be given a "full green/machine inspection passed". So the essence of all-green is"Serial numbers match", instead of"This machine has never been repaired and the quality of the parts is fine."——These two things are often confused, which is the biggest cognitive trap in second-hand transactions.

2. 4 situations in which Quangreen may be lying to you

Once you understand the principle, you can deduce its blind spot: as long as the "read serial number" is equal to the "factory value", the report will be green. The following four situations can be achieved, but the machine is not actually original.

1. Software "change to green" - directly rewrite the serial number

The merchant uses a programmer or underlying data tool to rewrite the serial number of the replaced non-original parts into data that is consistent with the AISI factory record. Even if the screen is replaced by a high imitation, as long as the underlying data of the screen is changed to the original factory identification code, AISI will still read it as "original" and the report will still be all green. What needs to be vigilant is: nowadays many people are changing to greenNo need to disassemble the machine anymore, you can directly modify the serial number stored on the hard disk through the software, and the threshold is greatly lowered.

2. Replace with "original disassembly parts" - the serial number is originally genuine.

If it is replaced with a part removed from another original Apple device, the serial number of the part itself is Apple's official code and is legal and valid. When Aisi compared it, it found that "it was the original serial number", so it judged it green. In this case, there is no need to modify any data. The report is naturally all green, but your machine is actually "assembled".

3. "I have never connected to AIS" before changing parts - there is no original account in the server

Aisi's secondary comparison relies on the factory records recorded in its server (see Section 3). If a machine is replacing partsNever connected to AIS before, there is no original record of it in the Aisi server, so the first connection after the replacement and every subsequent connection can only be judged based on the current data - as long as the current data is self-consistent, it will always be all green and will never turn red.

4. Hidden motherboard disease - not in the detection range at all

Aisi only checks the serial number.UndetectableThe true quality of third-party parts cannot be judged due to motherboard flying wires, chip welding, liquid corrosion, and reduced air tightness. An original old battery that has been severely degraded may appear completely green; an unofficial repair with poor workmanship may leave hidden defects on the motherboard, and the software will also be unaware of it.

3. AISI’s “anti-green” mechanism: there is a secret to connecting to AISI’s machines

Of course, Aisi is aware of the existence of green changes, so it added a server comparison: When the device is connected to Aisi, Aisi will read the factory serial number on the hard disk and inadvertently send it to you.Upload to your own server to keep the record. Afterwards, even if the local data is changed to green, Aisi can use the original ledger recorded by the server to restore and compare it to see through the tampering.

4. Everything in the Green Mile: What can be believed and what cannot be believed

5. How to truly verify the authenticity of a second-hand iPhone: the trinity identification method

Stack up three layers of "software testing", "manual testing" and "official verification". What can be deceived by one layer, it will be difficult to fool the three layers at the same time.

1. Software layer (screening): Use tools such as Aisi Assistant + Hourglass to cross-read reports. The key point is not “green or not”, but a few hard indicators——Battery cycle times and health, activation date, storage capacity, whether the screen and camera are original, and whether the serial number can be read normally. If any item does not make sense, investigate it further.
2. Artificial layer (actual measurement): Test Face ID/fingerprint entry and unlocking, whether full-screen touch is disconnected, front and rear camera focus and anti-shake, microphone recording and speaker external playback, Wi-Fi/Bluetooth stability one by one on site; then check the body screws, the gap between the screen and the middle frame for disassembly and prying marks, and blow air into the card slot to check for air tightness (the air leakage has probably been removed).
3. Authoritative layer (secret):Use the serial number toApple official websiteCheck the activation date and warranty status, and check the original GSX maintenance record if necessary; confirm that there is nothree locks——ID lock (allowing sellers to log out of Apple ID, erase and restart to see if other people’s accounts are blocked), network lock (test with different SIMs), supervision lock (MDM description file).

6. New changes in 2026: It is becoming more and more difficult to simply change the serial number

Apple has continued to strengthen serial number and component matching verification in recent years, and it has become significantly more difficult to simply rewrite the serial number to bypass machine inspection. A practical signal: if after connecting, AISIThe machine inspection information cannot be read, "The serial number is invalid" is prompted, or some items cannot be obtained., don't treat it as a minor problem - this often means that the machine has been deeply modified and should be abandoned directly.

7. Remember one sentence

All green does not mean there is absolutely no problem, but there must be a problem if it is marked red.Aisi's all-green is the first threshold for efficiency and can screen out the vast majority of low-level refurbished machines; but for an experienced refurbishment team, it is not difficult to achieve all-green. If you really want to place an order, please treat it as a "reference" rather than a "guarantee", and cooperate with manual testing and official website inquiries for cross-verification. If you want to do it hands-on, the download site has step-by-step instructions.AISI Assistant machine inspection tutorial。

FAQ

Want to know what testing items are covered by Aisi Test Machine and how to read the report? SeeDetailed explanation of AISI assistant machine inspection; To compare the machine inspection capabilities of Aisi, 3uTools, and iTunes, seeAisi vs 3uTools vs iTunes. To prepare for machine inspection, please first visit the official websiteDownload the genuine Aisi Assistant, do not use the green version from unknown sources.