Which?: Galaxy S4 wins battery life test
Samsung's Galaxy had the longest battery life in a test of seven popular smartphones, with twice the call time of the low-ranking iPhone 5.
Samsung's Galaxy S4 did best on a battery life test, with 1000 minutes of call time or 400 minutes of internet use before its battery life ran out.
Each phone's battery life was tested for call time and internet use by Which? and the Samsung Galaxy S4 was a clear winner in both categories.
The popular phone offered more than 1000 minutes of call time or 400 minutes of internet use before its battery life ran out.
Apple's iPhone 5 came second from last in both tests, with less than half the call time of the Galaxy S4 at just 499 minutes.
The results reflect similar result rankings from tests of the phones' processing time earlier this week, where the Galaxy S4 again came first and the iPhone 5 was last.
Of all the phones tested for battery life, the Nokia Lumia 920 offered the least amount of time for both call time and internet use, with just 235 minutes of internet time.
For the remaining four phones, Sony's Xperia Z, Google's Nexus 4, HTC One and Blackberry Z10, the results were mixed with each phone ranked differently for call time and internet use.
Users who make a lot of phone calls would make strong use of the Xperia Z or Nexus 4, which both offered more than 800 minutes of call time.
But for consumers who spend a long time online, HTC One and Blackberry Z10 had a longer battery life for internet use.
Which? tested the phones using a network simulator so the signal strength is the same each time and results are accurate.
But the news wasn't all bad for Apple's iPhone 5, as the phone was the quickest to charge to full battery life, at just 141 minutes.
The Lumia 920 and Galaxy S4 followed in second and third with charging times close to two hours, while the HTC one took the longest to charge at a full 237 minutes.