With the popularization and application of various high-tech, the function of smart phone is becoming more and more powerful, and the functions of taking photos and taking videos are advancing by leaps and bounds, making mobile phone the most commonly used recording tool in life. Look at our own mobile phone storage space. Most of the storage capacity is occupied by pictures and videos, and it is still growing rapidly.

When the storage space of mobile phone is not enough, many people will definitely think of expanding the memory card, just like a camera. Especially with the popularity of smart phones, the storage space of mobile phones seems to be stretched, and the demand for expanding the memory card of mobile phones is increasingly strong.

As early as 2005, SD Association brought Micro SD into the industry standard, supported by the expansion of mobile phone storage. Before the popularization of full screen, the internal space of mobile phone was abundant, and the Micro SD expansion bit was once popular. Users can easily insert the Micro SD card to expand the storage space of mobile phone.

However, with the continuous evolution of smart phone design, it is not only developing towards full screen, but also keeping its volume and weight light and thin. When mobile phone manufacturers compete fiercely to achieve a screen ratio of 1 0,000%, the internal space of mobile phones has been used to the extreme, and even the most basic mobile phone SIM card has felt the pressure and is constantly "slimming".

From the original SIM card to the current nano SIM card, the volume is decreasing, and its purpose is to be compact and save more space for the inside of the mobile phone. On the other hand, during the period of 14, the Micro SD storage expansion card has been used up to now, and there is actually no substantial change.

The calm ice is about to be defeated, and the flowing lake will regain new vitality. In 20 18, when Huawei released Mate 20 series, it introduced a memory card as small as nano SIM card-nm memory card, thus rewriting the new situation of mobile phone memory card.

Compared with the previous Micro SD card, the NM memory card has shrunk by 45%, making it the smallest mobile phone memory card in the world. Applicable models are Huawei P30 series, Mate 20 series and Mate X.

That's not enough. In order to better save the precious space of the mobile phone body, Huawei Mate 20 series changed the past two parallel dual-card slots into dual-card slots on the front and rear sides, which actually occupied a slot and realized the dual-card function.

The realization of all this includes not only the insight into consumer demand and product development, but also the brave attempts and innovations of Huawei engineers in technology realization.