Starting with the iPhone 5, Apple switched to the Lightning charging interface. Subsequently, Apple joined the data line detection function from the iOS 7 system. The non-MFI certified Lightning cable will not be able to charge the iPhone. Apple does this to ensure the security of the phone. Transmission to prevent damage to the phone caused by unstable voltage. Outdoor Fixed Advertising LED Video Wall
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However, due to the temptation of the iPhone's huge user base, many cottage manufacturers have begun to crack the Lightning data line, then how are they cracked? Before we get to know this, let's take a look at how the Lightning cable works with the iOS system.
Lightning data line detection principle Lightning data line has detection function, it is connected to the iPhone plug part has a set of chips as the basis for certification. When Chipwork dismantled the Lightning cable, it found that there were four chips in the connector section, numbered BQ2025, which were from the famous chip maker Texas Instruments. 
Observed under the microscope, these small chips are very complete, both in terms of drive transistors and analog circuits, and are very refined. These communication chips let the system know by means of the code. Whether the data line has MFI certification, whether it is the original chip, if not, the system will automatically report an error, indicating that this is an uncertified device, of course, it cannot be charged. 
These chips are also sold to Apple. All MFI-certified Lightning data lines will be purchased by Apple-designated distributors for about $2.
How is the Lightning cable broken?
Lightning data line cracking technology threshold is not low, whether it is capital or technical cracking is very difficult, according to industry insiders broke the news, the process of cracking is probably, first, they found a special hacker to exploit the vulnerability, each vulnerability Will be sold to manufacturers who produce cracked chips at hundreds of thousands of dollars; second, these manufacturers "copy" vulnerabilities, or simulate their core functions, to produce cracked chips that also have detection capabilities; third, manufacturers of production data lines buy Into these cracked chips, produce Lightning data lines without MFI certification.
So why are these vendors not going to apply for MFI certification, go to formal channels, and go to the cottage?
Because the threshold for obtaining MFI certification is very high, Weifeng.com has collected how to get a data line to obtain MFI certification. Apple gives very high conditions, including self-built factories of not less than 2000 square meters, and workers should not be less than 50. During the application process, Apple has the right to request modification of the product until it meets the requirements, and it will cost an agent fee of $8,500 and approximately 3-6 months. This certification process has increased the cost of a data line by about 15 yuan. How can these cottage manufacturers be willing? 
Are these cracked Lightning data lines reliable?
As mentioned above, the chips in these Lightning data lines are cracked through the vulnerability, which means that once Apple's new system has modified the detection mechanism and blocked the loopholes, then these cottage data lines Will not be available. Therefore, it is recommended that you still choose the original original data cable. 
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