Sony's newly released mid-level Android smartphone has a smaller and lower resolution HD display and a less powerful dual core processor than the companies top of the line Xperia Z and ZL. However, the Sony Xperia SP comes with a 2370 mAh battery, as large as its more powerful siblings. This results in excellent battery life.
Sony Xperia SP - 19 hours 49 minutes
Samsung Galaxy S 4 - 18 hours and 3 minutes
Sony Xperia Z - 16 hours and 3 minutes
LG Optimus G - 15 hours and 30 minutes
HTC One - 13 hours and 38 minutes
Apple iPhone 5 - 8 hours and 42 minutes
The large battery mated with the efficient 28 nm dual core Kraits result in excellent talk time when compared with its quad core competition. The Apple iPhone 5 also has a power efficient 32 nm dual core processor, but it has a much smaller battery.
HTC One - 9 hours 58 minutes
Apple iPhone 5 - 9 hours and 56 minutes
Samsung Galaxy S 4 - 7 hours and 24 minutes
Sony Xperia Z - 6 hours and 27 minutes
Sony Xperia SP - 6 hours and 18 minutes
LG Optimus G - 5 hours and 15 minutes
Given that the Xperia SP only has a 4.6-inch HD display (720 x 1280), it is a bit surprising to find its battery life while web browsing to be shorter than the Full HD HTC One, Samsung Galaxy S 4 and the Sony Xperia Z.
Samsung Galaxy S 4 - 12 hours and 30 minutes
Apple iPhone 5 - 10 hours and 12 minutes
HTC One - 10 hours and 2 minutes
LG Optimus G - 7 hours and 30 minutes
Sony Xperia SP - 7 hours and 27 minutes
On the video playback tests, the Sony Xperia SP performs as expected, having longer battery life than the larger Xperia Z. It still falls behind the Full HD Galaxy S 4 and HTC One.
Standby (with 1 hour of calls, video playback and web browsing per day)
Samsung Galaxy S 4 - 69 hours
Apple iPhone 5 - 51 hours
Sony Xperia SP - 51 hours
HTC One - 48 hours
Sony Xperia Z - 48 hours
LG Optimus G - 45 hours
Overall the Sony Xperia SP performs well enough although give the large battery and smaller display, I was expecting better results in the web browsing test.