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iphone3
As was made clear by the inevitable teardown, a fair amount of the iPhone 4′s chassis is taken up by its battery: in this case a 1,420 mAh Li-Polymer pack. Apple reckon you’ll see up to 300hrs standby, up to 7hrs 3G talktime or up to 14hrs 2GB talktime from a full charge, or alternatively up to 6hrs 3G internet browsing, 10hrs over WiFi, 10hrs of video playback or 40hrs of audio. In reality we’ve found the fourth-gen handset manages around 25-percent longer runtime than its predecessor, with mixed use. For instance, after around six minutes of voice calls, replying to thirty-odd emails and twenty minutes of RSS reading, the iPhone 4 dropped from 100-percent to 90-percent. Still, it’s relatively early days yet, and we’ll be watching closely to see how the iPhone 4 performs over the next week or so before revisiting battery life.
We’ll also be keeping track of how AT&T handles calls and whether the improvements – both that Apple has made to the iPhone 4 and the carrier claims to have made to their network – make a significant impact. Poor voice call performance has been an ongoing criticism of all three prior generations of iPhone, a persistent thorn in Apple’s performance paw. For their part, Apple claim to have changed the way the smartphone prioritizes network selection, with the iPhone 4 picking a base station band not solely on signal strength but on available capacity. That way, the company reckons, users won’t be faced with the confusing situation where the iPhone says it has a strong signal but calls drop nonetheless.That change in measurement has made it difficult to gauge the extent to which our iPhone 4 demonstrates the same antenna issues as have been widely reported and which Apple has acknowledged. In short, the switch to making the antennas external has meant that, if a user’s hand bridges the two and is sufficiently damp to prove conductive, the iPhone 4 can lose signal dramatically. It’s certainly something we can replicate, though we had to hold the handset in a way we wouldn’t usually do. Apple’s own Bumper case is one workaround, and it seems a physical case is generally the best solution; adhesive strips, like Fusion of Ideas’ StealthArmor, failed to address the signal problem as they were billed as doing. Now, some iPhone 4 owners are finding they naturally hold the handset in a way that doesn’t cause problems, or that their specific phone isn’t as prone to it anyway, but many are discovering they also need to budget for a case.No matter the changes, AT&T’s network continues to frustrate. We’ve suffered multiple dropped calls in every day of iPhone 4 use with the US carrier, and as before there’s little apparent connection between what’s shown in the status bar and what the network is actually capable of sustaining. Even more frustrating, perhaps, are the recurring “No SIM” errors in which the iPhone 4 and the AT&T MicroSIM seemingly become bored and stop responding to each other. We’re not sure whether it’s an Apple hardware issue – we’re seeing similar reports from multiple people, though predominantly in the US – or something to do with the carrier’s systems, but either way it demands a power-cycle before the two play nicely again.When you do manage to place a call, there’s an impressive improvement in audio quality. The iPhone 4′s dual microphones – used for active noise cancellation – left callers able to hear us even with traffic in the background. Meanwhile the speakerphone is also louder than on the 3GS, thanks, we’re guessing, to the new audio chamber also spotted in the teardown. Even so, you get a sense that Apple have tuned the iPhone 4 for data use, unsurprising perhaps given the number of apps that rely on network connectivity. There’s a significant improvement in 3G speeds over the iPhone 3GS that’s noticeable in day to day use, and the iPhone 4 is proving one of the fastest browsing devices on AT&T’s network that we’ve experienced.
Outside of the US, meanwhile, Apple has opened its arms to embrace not only multiple carrier partners but official unlocked devices, seemingly deciding that if you can’t beat the unlockers then you may as well join them. In the UK and Canada, among other places, carriers are offering the iPhone 4 on subsidized deals while Apple themselves are selling unlocked, SIM-free (and full price) handsets. It’s a move that we can only see fueling the call for broader availability in the US, though without knowing the exact specifics of Apple’s exclusivity deal with AT&T it’s hard to say whether it’s a shift we can expect to see any time soon.
We’ll also be keeping track of how AT&T handles calls and whether the improvements – both that Apple has made to the iPhone 4 and the carrier claims to have made to their network – make a significant impact. Poor voice call performance has been an ongoing criticism of all three prior generations of iPhone, a persistent thorn in Apple’s performance paw. For their part, Apple claim to have changed the way the smartphone prioritizes network selection, with the iPhone 4 picking a base station band not solely on signal strength but on available capacity. That way, the company reckons, users won’t be faced with the confusing situation where the iPhone says it has a strong signal but calls drop nonetheless.That change in measurement has made it difficult to gauge the extent to which our iPhone 4 demonstrates the same antenna issues as have been widely reported and which Apple has acknowledged. In short, the switch to making the antennas external has meant that, if a user’s hand bridges the two and is sufficiently damp to prove conductive, the iPhone 4 can lose signal dramatically. It’s certainly something we can replicate, though we had to hold the handset in a way we wouldn’t usually do. Apple’s own Bumper case is one workaround, and it seems a physical case is generally the best solution; adhesive strips, like Fusion of Ideas’ StealthArmor, failed to address the signal problem as they were billed as doing. Now, some iPhone 4 owners are finding they naturally hold the handset in a way that doesn’t cause problems, or that their specific phone isn’t as prone to it anyway, but many are discovering they also need to budget for a case.No matter the changes, AT&T’s network continues to frustrate. We’ve suffered multiple dropped calls in every day of iPhone 4 use with the US carrier, and as before there’s little apparent connection between what’s shown in the status bar and what the network is actually capable of sustaining. Even more frustrating, perhaps, are the recurring “No SIM” errors in which the iPhone 4 and the AT&T MicroSIM seemingly become bored and stop responding to each other. We’re not sure whether it’s an Apple hardware issue – we’re seeing similar reports from multiple people, though predominantly in the US – or something to do with the carrier’s systems, but either way it demands a power-cycle before the two play nicely again.When you do manage to place a call, there’s an impressive improvement in audio quality. The iPhone 4′s dual microphones – used for active noise cancellation – left callers able to hear us even with traffic in the background. Meanwhile the speakerphone is also louder than on the 3GS, thanks, we’re guessing, to the new audio chamber also spotted in the teardown. Even so, you get a sense that Apple have tuned the iPhone 4 for data use, unsurprising perhaps given the number of apps that rely on network connectivity. There’s a significant improvement in 3G speeds over the iPhone 3GS that’s noticeable in day to day use, and the iPhone 4 is proving one of the fastest browsing devices on AT&T’s network that we’ve experienced.
Outside of the US, meanwhile, Apple has opened its arms to embrace not only multiple carrier partners but official unlocked devices, seemingly deciding that if you can’t beat the unlockers then you may as well join them. In the UK and Canada, among other places, carriers are offering the iPhone 4 on subsidized deals while Apple themselves are selling unlocked, SIM-free (and full price) handsets. It’s a move that we can only see fueling the call for broader availability in the US, though without knowing the exact specifics of Apple’s exclusivity deal with AT&T it’s hard to say whether it’s a shift we can expect to see any time soon.
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