The Xperia Z5 follows, at a distance of almost 5 hours behind the S7. And even then, it's the Galaxy S6 that comes closest, not one of the competing brands. Starting with voice calls over a 3G network, the S7 can outlast all of the above (well, we can't be sure about the Mi 5 and G5 just yet). The Galaxy S7 does very well, to put it simply. So, as usual, we carried out our array of battery tests, and while the summary can be found in the review, we'll get into a little bit more detail in these few paragraphs here. It's what the Galaxy S7 does with its 3,000 milliamp hours that matters as we've seen plenty of impressive spec sheets that couldn't transfer into reasonable battery life. The iPhone 6s, on the other hand, has a lowly 1,715mAh battery to feed a 4.7-inch display. Now, LG does make the Nexus 5X, and that's a flagship of sorts with a 5.2-inch display and a 2,700mAh cell. Yes, both LG smartphones are bigger, but who's to blame if the company doesn't have a flagship offering close to the 5' mark? In their favor though, both models feature a removable battery. The LG G5 has a 2,800mAh cell for an even larger 5.3' screen, while the outgoing G4 relies on the same 3,000mAh capacity to power a 5.5-inch display. The current, and likely last of its kind, Sony Xperia Z5 packs 2,900mAh of juice, mated to a marginally larger 5.2-inch display. The Galaxy S7 has a 3,000mAh battery, which is the most that 5-inch (or thereabout) smartphones have these days, matched by the latest Xiaomi Mi 5. It is, in fact, the most juice a vanilla Galaxy S-series model has had - specialty editions like the S6 active and S6 edge+ don't count. Well, good thing then, that Samsung actually fitted a higher capacity power pack inside the Galaxy S7 than it did in the S6. The first part of that story doesn't seem likely to change, as design constraints have been forcing manufacturers to seal batteries inside devices, not just smartphones. Not only that, it actually had a smaller battery than the model it replaced. We've been through it a lot - the Samsung Galaxy S5, as all Galaxy S's before it, had a user-replaceable battery, and the S6 didn't, which sucks.

Samsung s7 battery nelting