If you’re familiar with Android apps like CellFinder, you’ve got a good idea for what this is — and the name “Signal” is a pretty accurate representation, too. Basically, iPhone Dev Team member planetbeing has thrown together a neat little app that shows you signal strengths of your phone’s connections to nearby cell towers along with their position relative to you (if the positions can be determined), an especially welcome utility considering that you can’t access Apple’s old “field test mode” in iOS 4. Our favorite part, though, has to be planetbeing’s desire to turn this from mere information into entertainment — and to hopefully take the edge off your pain and deep-set resentment over the signal strength and call dropping issues in your iPhone 4 — by adding a mode where your goal is to get the signal to drop completely, at which point you’ll hear the voice of Spock announce a Vulcan death grip. Who knew an engineering defect could be so much fun? If you’re jailbroken — or you’re willing to jailbreak — you can score Signal in Cydia for a five-spot. Follow the break for video of the app in action.
Nokia claims it always prioritizes antenna performance over physical design, and we’ll take them at their word, but that apparently didn’t exempt one Espoo handset from Apple’s grip of doom. Here’s the Nokia N97 Mini going down for the count, from a full seven bars to two. Of course, Apple doesn’t mention whether calls or data drop when the handset’s held this way. Video after the break.
Apple’s Friday press conference may have left a bad taste in some rival handsetmanufacturer’s mouths, but not all of them are taking Cupertino’s derision of their devices seriously — HTC’s Droid Eris was arguably the most affected by the grip of doom, its bars dropping to zilch when held, but the Taiwanese company’s keeping any controversial opinions to itself for now. Instead, it’s sharing a simple percentage to help clear the air. Whereas Apple claimed over 0.55 percent of customers called AppleCare with reception-related complaints, HTC’s Eric Lin told Pocket-lint the Droid Eris technical support rate was 0.016 percent, nearly thirty-four times lower — though even with a seven-month head start, we have to wonder if the Eris sold close to three million by the time Verizon brought the axe down.
Nokia’s looking to ride the mojo of any negative fallout from today’s Apple press conference, slipping out a rather fascinating statement this afternoon. The gist of it is that Espoo’s keen on letting everyone know how much blood, sweat, and tears they’ve poured into perfecting their antenna design strategy over the years, going so far as to say that they “prioritize” it over the physical design of the phone if they need to in order to optimize its call performance — an opinion moderately different from the “we want to have our cake and eat it too” philosophy espoused by Jobs today. In closing, Nokia acknowledges that a “tight grip” can mess with the performance, though they say they’ve done a bunch of research on the ways their phones are typically held so that the antennas are placed optimally. Interestingly, there was a stink not long ago about the severe signal degradation some E71 users were seeing when they placed their hands on the lower rear of the phone — but you can’t win ‘em all, we suppose. Follow the break for the full statement.
Although there’s never been any question that there’s something going on with the iPhone 4′s fancy new antenna system, we really haven’t seen any rigorous testing confirming that the issue is real, severe, and affects every phone. That just changed: Consumer Reports tested three iPhone 4s and several other AT&T phones in their RF isolation chamber that simulates varying levels of signal from every carrier, and found that the iPhone 4 was the only handset to suffer signal-loss issues. What’s more, CR directly says that its findings call Apple’s explanation of a miscalculated signal meter into question since the tests “indicate that AT&T’s network might not be the primary suspect.” CR found that simply putting duct tape over the bottom-left corner is enough to alleviate the issue — we’re guessing that’s Jony Ive’s worst nightmare — and says that while the iPhone 4 has the “sharpest display and best video camera” of any phone it’s tested, it simply can’t recommend the device until Apple comes up with a permanent and free fix to the antenna problem. Ouch.
Of course, we couldn’t sit around waiting for someone else to test the iPhone 4 in a more controlled way, so we actually asked our good friend Erica Sadun from TUAW to write us a bespoke signal strength app for iOS 4. Obviously we couldn’t submit it to the App Store, but we’ve been running it on all of our phones here at Engadget and we can independently confirm Consumer Reports‘ finding that there’s a serious signal attenuation issue with the iPhone 4′s antenna — every phone we’ve tested displays dropped signal when held with the bottom left corner covered. Now, what we don’t know is whether that signal attenuation consistently affects call quality and data rates, which we suspect is more directly related to the network in the area; some of our iPhone 4s drop calls and experience low data rates with alarming frequency, while others — like our review unit — have almost never dropped a call and have had no data problems. However, now that we’ve confirmed and clarified that the antenna issue affects every iPhone 4, we can take on the next step, which is sorting out exactly when and where the issue is most severe. Either that, or Apple can do something to actually fix the issue — we’ll just have to wait and see. For now, check our app in action after the break.
Update: To clarify, “here at Engadget” is a virtual location — our iPhone 4s are actually located across the country in San Francisco, Chicago, and New York, and we saw the app respond that way regardless of location. Dropped calls and other effects weren’t as consistent, however, and we’re still testing to sort out when the effects of the antenna issue are the most severe.
The iPhone 4‘s antenna issues have sparked off a firestorm of debate as to the root cause — Apple says holding the phone differently or buying a case are the best answers, while other are going down a more voodoo path — but our friends at AnandTech have done some more scientific testing of the problem and come up with a few interesting results. Turns out the iPhone 4 actually performs slightly better inside a case than a phone like the Nexus One, which has had similar issues crop up, but it’s slightly worse when held in the hand, reporting an average signal drop of 20dB. Here’s where it gets a little wacky, though: the signal meter in iOS 4 is logarithmic, so that 20dB drop can either leave you looking steady at five bars or drop you all the way to zero, depending on what the actual signal level in the area is like. Take a look at the chart above and you’ll get it: the range of values between one bar and four spans just 23dB, while the range for five bars is 40dB. That means holding the phone in an area with a strong five-bar signal will have no apparent effect — you can lose 20dB at full signal and still see five bars — but holding the phone in an area with weaker coverage will easily drop the meter to one bar, since the 20dB signal drop covers almost the entirety of the remaining 23dB scale. Oops.
Of course, that’s just the on-screen display, which Apple can and likely will tweak in a future iOS update. The real question is whether the reported signal has anything to do with performance, and Anandtech agrees with our general experience, saying that the iPhone 4′s improved signal to noise ratio means it actually does a better job of hanging onto calls and using data when there’s low signal than the iPhone 3GS. In their words, “this iPhone gets the best cellular reception yet, even though measured signal is lower than the 3GS.” However, there’s no getting around the fact that we’ve definitely dropped a couple calls with the iPhone 4 by holding it the wrong way, and Anandtech says the only real solution to the antenna issue will be for Apple to either subsidize free bumpers or add an insulative coating to the antenna band. We’ll see what happens — we’ve got a feeling an iOS update is on the way, but we’d definitely love to see Apple pursue a more aggressive solution to this problem.
What’s more annoying than spending hourslining up for a shiny new gadget? Learning that your precious phone can’t actually connect to the network. Well, depending on how you hold it — word has it that the iPhone 4′s bottom-left corner isn’t playing nice with your skin. If you recall from the keynote, that’s where the Bluetooth / WiFi / GPS antenna meets its GSM / UMTS counterpart. So we decided to test on two brand new iPhone 4 handsets purchased today in the UK.
One iPhone 4 demonstrated the issue everytime it was held in our left hand (as a right-handed person is apt to do) so that our palm was essentially bridging the two antennas. You can see that in the video after the break. Bridging the two with a finger tip, however, didn’t cause any issues with the reported reception. If we had to guess, we’d say that our conductive skin was acting to detune the antenna — in fact, we’ve already managed to slowly kill two calls that way so it’s not just an issue with the software erroneously reporting an incorrect signal strength. That said, we had no issues when Apple’s $29 rubber bumper accessory (given to us free for standing in line) was attached, creating a buffer between our palm and the antennas. Our second UK-purchased iPhone 4 was fine, showing none of these handling symptoms. See the video evidence after the break including Insanely Great Mac’s version which got us to worrying in the first place.
P.S. Don’t forget to take our poll and let us know if you’re seeing both the yellow spots / stripes and reception issues. Unfortunately, we’re suffering from both flaws which is not a good sign for quality control on this first batch of Apple handsets.
P.P.S. Since some of you are asking, our review unit showed none of these issues.
Update: Apple responds to the issue, and boy, it’s a doozy.
