Which Sony smartphone is worth the purchase? We pit the the Xperia SP against the Xperia Z to see which is better.

For the design and display, the Sony Xperia SP has a TFT display model that measures 4.6 inches and can render a screen resolution of 720 x 1280 pixels. It weighs 155 grams and comes with the following dimensions: 130.6 x 67.1 x 10 mm.

Meanwhile, Sony's other smartphone, the Xperia Z has a TFT display as well, but this it's a little larger (5 inches) and can render a resolution of 1080 x 1920 pixels. It is lighter (weighing 146 grams) and also thinner than the previous handset (dimensions: 139 x 71 x 7.9 mm).

In terms of hardware and OS, the Xperia SP has a dual core processor (Krait) working at 1.7 GHz which is paired up with a Snapdragon MSM8960T chipset from Qualcomm. It supports 1GB of RAM and 8GB of internal storage capacity (if they use a microSD card, which expands the memory by up to 32GB). It runs on the Android Jelly Bean.

The Xperia Z is powered by a quad core (Krait) processor that works at 1.5 GHz. The smartphone has two options for chipset: either the MDM9215M or the APQ8064 model, both from Qualcomm. It has a bigger RAM capacity (2 GB) and comes with 16GB of internal memory (the memory is expandable via microSD card by up to 64GB). It also runs on Android Jelly Bean.

For the battery usage and camera specs, the Sony Xperia SP can last up to 19 hours of talking time (3G) because of its Li-Ion 2370 mAh battery unit., while the Xperia Z has a Li-Ion 2330 mAh battery unit, which is estimated to last around 14 hours of talking time (3G).

The Xperia Z has a 13.1MP rear-facing camera (autofocus + LED flash) and a front-facing camera of 2.2 MP, while the Xperia SP has an 8MP main camera (autofocus + LED flash) and a VGA type of secondary camera.

The Sony Xperia SP cost $232.92, while the Sony Xperia Z comes at the price of $341.39.

Which Sony smartphone is worth the purchase? Sound off in the comments section below.