How to tell a real SD card from a fake How to tell if an SD card is good or bad

When buying an SD card, you must be careful of this kind of fake card.

Want to know about SD card.

The main aspects are as follows:

1. Choose, first of all, choose a brand of mobile phone memory card.

In this way, the quality is guaranteed.

2. **, as the so-called "friendship is a penny price or", a card with a memory of 68G, the market price ranges from 100 to 200 yuan, so the SD card purchased for dozens of yuan cannot guarantee that the purchase is a regular card.

3. The purchase must have a card with a formal invoice, otherwise some fake memory cards are harmful to the data stored in the mobile phone, and may damage the important files on the mobile phone.

4. Do not use the mobile phone memory card immediately after you get it, let alone transfer important files into it, but identify it first. The method of identification is relatively simple, and now it is absolutely impossible to install some detection software on the computer, which can be seen to detect the size of the mobile phone memory, and can also monitor the security performance of the mobile phone memory card.

The 16G memory card that comes with the machine is definitely not enough, so I plan to buy a 32G memory card! How to buy a genuine Samsung phone memory card? The following is how to distinguish the authenticity of Samsung mobile phone memory cards that I have collected and sorted out, I hope it will be helpful to you

Tools Raw materials.

Samsung memory card.

mydisktest expansion detection tool.

Verify the authenticity of mobile phone memory cards.

1. At present, SD memory cards and TF memory cards can be expanded. In particular, TF memory cards have the most serious expansion phenomenon, but Samsung's cards have faster read speeds and higher mobile phone dual-use types, and it seems that there are also products that have been expanded. How can we distinguish the real from the fake?

2We can use the tool to monitor mydisktest expansion detection tool, which is a software that accurately identifies mobile phone memory cards through read and write operations, and his recognition rate is quite high! Basically, through a single inspection, you can determine whether it is a fake "goods"!

3 And then the stupidest way, we can use the way of copying large files, for example, drag and drop a file of more than 3G to the memory card! If it's a fake, then an error will be reported! Can't be copied!

If it's a real card then there's no problem! But there's one thing to remember! You can't copy a file with a total amount of more than 3G, because small files such as a few millimeters of a few millimeters of copies that can't be tested.

endCheck the authenticity of the memory card through the official website.

We can also query by querying the anti-counterfeiting code, here is the address of the Samsung official website query, here you can check the authenticity of memory cards, memory sticks, and solid-state drives!

There are the following ways to distinguish the quality and speed of mobile phone memory cards:

1. Speed. There is a standard speed for memory cards, called classes, from 1 to 10, the higher the number, the faster the speed. At present, it is necessary to purchase at least a class 6 or higher card, preferably a class 10 card.

2. The meaning of the number after calss is the minimum write speed. For example, class10 means that the minimum write speed cannot be less than 10MB s. Read speeds are typically much higher than write speeds, so only write speeds are measured, not defined.

Specific speed, need to be tested on a case-by-case basis.

3. In terms of brands, the more big brands are: SanDisk, Kingston, Samsung, ADATA, Transcend, Sony, Toshiba, Maxcell, PNY, etc., all of which are of good quality.

Don't buy these things in the computer city, where the water is deep. You can go to some B2C** to buy, such as JD.com, Gome, Suning, buy brand goods, don't buy knockoffs.

1. Through the appearance of the memory card, we can only simply judge whether it is **, but we cannot identify whether it is an expansion card. To find out if the memory card you bought has been expanded, you need to use the specific testing tool MyDiskTest. It is a mobile storage product expansion recognition tool that integrates 5 major functions, through which it can easily detect whether the storage device has been expanded.

2. When the user connects the memory card to the computer, you can select the device to be detected through the drop-down menu at the top of the mydisktest software. After determining the device, you can choose the test method below, the default is bad block detection and fast expansion test, which is equivalent to a combination option, you cannot test one of them alone, and the two tests are carried out at the same time. Generally speaking, if you want to check if your memory card is expanded, you can simply use the default settings and click to start testing this drive now.

3. We can determine whether the memory card we bought has been expanded, and if it is an expansion card, we need to restore it to the actual capacity to avoid data loss when using. If not, then we also need to go back to the first question, which is whether the memory card is ** or not. Although it has passed the appearance and expansion detection, it is not enough to prove the authenticity of the memory card, and finally, we have to test the card speed, using the mydisktest detection tool.

4. The final test results include physical operation speed, file creation speed, file deletion speed, random read and write speed, and file copy speed. After getting these values, you can go to the official website of the memory card to find information, the official website of the general brand memory card will provide the read and write speed of the product, of course, most of them are the average and the lowest value, after the comparison between the two, as long as the gap is not too big, it can be determined that the original memory card without expansion can be determined.

After purchasing, be sure to test the memory card with software before using it.