With the popularity of speed and mobile Internet, smart phone growth rate than expected, after just a few years, there have been a variety of mobile entertainment, from glory to open the black king of all hot chicken elite network of peace . 
At present a wide variety of types of mobile phones, machine down to a thousand dollars, from the Apple Samsung Huawei's high-end machine everything. But only one around, but that is probably a few questions, not very large memory, run fast enough, the operation card is not card?
So many people focus on buying the phone when mobile phone manufacturers that use the processor is Qualcomm's Snapdragon chip or chip Huawei's Kirin, what type, and so on. In fact affect the fluency of the phone more than just a processor that argument, and also about how much phone memory, using what memory related. Then Wang-Wang semiconductors will take you to know about what are the phone's memory? Which is better.
Between the phone memory, flash memory, processor
workflow of these three is that, when running a program, the processor will receive instructions immediately send all the information covered by this program into memory, so when you open the program, you will first see a "read article" screen; while the processor started to upgrade their operating frequency, and the received data memory at fast speed arithmetic processing, and then transmits processed data into memory; this when the program completes the process open, but then, this program will not immediately return to Flash, but still resides in memory, because the processor must be prepared because the user's operation, and may at any time sent instruction data; eventually, when the user closes the program, the program memory before the original data plus data through user operation with newly generated back into flash memory. Between the phone memory, flash memory, processors are interdependent, indispensable to each other. 
Phone memory to run the development process
in 2001, Nokia announced the world's first smart phone, the Nokia 7650. Using the initial generation of SDRAM memory, the capacity is only 8MB, but at the time, which is already a top-level configuration is unique! 
2005 Nokia N70 is equipped with a 30MB memory, the single-threaded into a multi-threaded operation.
2007年iPhone一代搭载了一块128MB容量的DDR内存。但即便如此，当时也依然无法满足苹果系统对于多任务的需求。当时的iPhone只能同时运行一个APP。
在2009年，魅族M8。该机因为拥有同iPhone媲美的屏幕，更强悍的硬件以及与iPhone相似的软件使用体验而备受追捧，当时国产机皇魅族M8使用的是256MB的内存DDR。
2011年三星将S2拥有当时全世界最薄的机身厚度8.49mm，但却依然拥有顶级的配置。该机内存容量达到1GB搭载了LPDDR2内存芯片，是当时首款达到这一容量的手机。
2013年，三星开创性的将一块5.68英寸的巨屏装在了第三代Note手机上面，并带来了FHD超高清分辨率。为了带动这块屏幕，三星更是在业界首次采用3GB的LPDDR3内存作为硬件支撑。
2016年， vivo首发了当时业界首款6GB内存的手机，该机内存采用了当时最先进的20NM工艺制造，性能提升80%，功耗降低40%。这款内存就是6GB 的LPDDR4内存。
2018年，经过宏旺半导体的不断独立研发，国内首发8GB的LPDDR4X内存芯片已经成功量产。LPDDR4x目前分为3733Mbps/pin(Data Rate)和4266Mbps/pin(Data Rate)，这和手机CPU有关，目前市面上的处理器芯片最高支持LPDDR4X，这也是LPDDR5在2019年没有商用的原因之一.
而LPDDR5已有传闻能在2020年商用了，宏旺半导体计划于2020年开始立项研发LPDDR5芯片。
After the above introduction may know, started with a phone memory is SDRAM, slowly developed to the current LPDDR5. Currently smartphones run the memory has the following four types: LPDDR3, LPDDR4, LPDDR4x and LPDDR5 (2020 Nian commercial). Running speed in the arrangement as follows: LPDDR5> LPDDR4x> LPDDR4> LPDDR3. The phone's memory to run the query can be adapted to the type of semiconductor by Wang Wang's official website and customer service parameters.