By the third quarter of this year, more and more mobile phones with foldable screens have appeared, which makes people feel ready to start immediately. Today, with more and more mature related technologies, more and more mobile phone manufacturers will invest in R & D, and Google is one of them. Recently, foreign media have found traces of the foldable screen mobile phone that Google is developing, which is also full of expectation. < / P > < p > at present, folding screen mobile phone brands have been officially launched to the market or can be put into mass production, including Huawei, Samsung, Motorola, etc. it is reported that LG, apple, Microsoft and other manufacturers have similar R & D plans; moreover, Microsoft has demonstrated similar solutions, including dual screen computer surface Neo, and dual screen mobile phone surface duo. Recently, foreign media have obtained an Android internal document, which lists the pixel phones that have been launched, as well as a number of models under development, full of highlights. The file < / P > < p > lists the pixel 5A code as “barbette”, as well as three other devices such as passport, aven and oriole. Among them, these three devices are marked as Q4 in 2021, which obviously refers to the expected launch time. Therefore, aven and oriole are considered as the codes of pixel 6 series mobile phones; while the name of passport, which looks like “folding phone”, is considered to be the foldable screen mobile phone developed by Google. < / P > < p > with regard to this device, a senior executive of Google once confirmed that Google has plans to develop folding screen mobile phones, but he also said that Google is not in a hurry to launch folding screen phones soon. Coincidentally, at the time when Samsung and Huawei publicly released their first folding screen mobile phone in early 2019, LG also said that it was too early to launch the folding screen mobile phone. It can be understood that there are still great challenges in the research and development of folding screen mobile phones, as well as problems such as cost, durability and market demand need to be discussed and solved. < / P > < p > it’s like when we entered the 4G era, 4G mobile phones gradually became cheaper and cheaper from high prices. In addition, with the rapid increase in the coverage of base stations of operators, 4G mobile phones were rapidly popularized. In the market for foldable screen mobile phones, it may be similar. When more and more businesses are invested, the R & D cost is gradually reduced, and the demand of users is generated, the whole market will take advantage of the situation. I don’t know if you are looking at your mobile phone. Are you going to start a mobile phone with folding screen? American companies begin to give up R & D: who should pay for corporate research?