iPhone 4的显示屏也升级为“视网膜显示屏”，增加了人眼无法识别的单独像素的密度。
IPhone 4's display also saw an upgrade to "retina display", featuring an increase pixel count making individual pixels invisible to the human eye.
优点：4.3英寸屏幕，1G处理器，800万像素摄像头和全景拼接技术，整合了Skype，能作为无线热点，支持Flash 10.1 ，可升级的系统
Pros: 4.3in screen; fast 1Ghz processor; 8Mp camera with panoramic photo option; Skype integration; mobile hotspot capability; and Adobe Flash 10.1 with 2.2 Android software upgrade.
的确如此。所以，除了升级像素外，Apple还采用了新型的，对光线更为敏感的机背照度传感器。
So Apple's using a newer backside-illuminated sensor that's more sensitive to light in addition to upping those megapixels — and we must say, pictures on the iPhone 4 look stunning.
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