Sony Xperia Z2 vs. Sony Xperia Z1: Sony Mobile announces that Android L update will arrive in all its Sony Xperia Z series, but Xperia Z3 and Z2 series phones will be the first ones to receive it in early 2015. Does this make Xperia Z2 a better smartphone now than Xperia Z1?

It's too early to judge. Let's make a head-to-head comparison of the other specs first:

Users today prefer bigger phone screen, so it is likely that Z2 will be a better choice than Z1 as it sports 5.2-inch screen. The latter's screen only measures 5.0 inches. In terms of display resolutions, both are in full HD (1080 X 1920 pixels). They differ in pixel density, though - Z1's display is sharper with 441ppi. Z2's only 424ppi. However, users may not notice the difference. In terms of display features, they carry the same things - light sensor, proximity sensor, and scratch-resistant glass.

Sony Xperia Z2 vs. Sony Xperia Z1: Which Sony flagship phone has superior hardware?

Xperia Z2's chipset is more (or slightly) advanced than Z1 as it is powered by Qualcomm Snapdragon 801 MSM8974-AB. Xperia Z1 is powered by Qualcomm Snapdragon 800 MSM8974. But this is expected as Z2 is released later than Z1.

Xperia Z2 also works faster as it utilizes quad core, clocked at 2300 MHz, Krait 400 than Xperia Z1's quad core, clocked at 2200 MHz, Krait 400. When it comes to gaming, users will basically experience the same performance as both makes use of the same graphics processor - Adren0 330.

Certainly, camera is among the basic concerns of customers. Both Xperia phones have 20-megapixel rear camera. They only differ in front-facing camera as Z2 has 2.2 megapixels and Z1 has 2 megapixels. Comparing camcorder features, however, Z1 has more - digital image stabilization, continuous autofocus, High Dynamic Range mode (HDR), and video light. Z2 only has HDR mode.

Sony Xperia Z2 vs. Sony Xperia Z1: Which one is a better investment if users have to judge by the specs?