iPhone是一个多频电话(可以用在其他的国家)

寂夜清风

Debunk: sleep easy, the iPhone's still a quad-band worldphonePosted May 18th 2007 4:43PM by Chris Ziegler
Filed under: Cellphones, Handhelds

- u" D, W4 R+ Z2 D% G' e+ x0 EThere's been a lot of buzz these past couple days about the iPhone's FCC filingand what it says -- or rather, what it doesn't say -- about thehandset's internals. The fear basically revolves around the fact that alack of testing on the GSM 900 and 1800MHz bands indicates that itlacks those bands entirely, but we can assure the globetrotters outthere jonesin' for an iPhone come next month that there'll be a fullrange of RF spectrum waiting for you. How do we know? Well, first ofall, in the year 2007 (or 2005, for that matter) it's simply idiotic torelease a wide-appeal phone with any fewer than four GSM bands.Quadband GSM chipsets have been commodity items for some time now andadd virtually no expense to a handset's internals. Second of all,quadband phones never havetheir non-US bands mentioned in a filing, particularly in a testreport. Follow the break for a walkthrough of exactly what we mean.

Let'stake a look at a released phone that we know to be quadband -- that is,a phone that supports GSM on the 850, 900, 1800, and 1900MHz bands,offering coverage pretty much anywhere in the world that a GSM towerexists. For our purposes, we'll pick on the RIM BlackBerry 8800. You're going to get a frightening peek into our daily FCC-lurking insanity here.

Searching for the 8800's FCC ID reveals offers up four filings: one for each band the FCC cares aboutplus an accessory filing that details radiation emitted by the phone'sAC adapter. Here we see 850 and 1900 (GSM) and 2400 (Bluetooth). Nomention of GSM 900 or 1800 here, despite the fact that the 8800 has therequisite support; the bands aren't used in the States, so they're deadin the FCC's eyes and RIM is under no obligation to provide testreports for them (at least, not to the FCC).
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& x: z9 ]. D5 \1 B+ X4 }Now let's take a closer look at the test report for the device itself.Pardon the size of the text here -- you can check out the actual filingif you're so inclined -- but essentially, once again you'll find zeromention of GSM 900 or 1800. The FCC just doesn't give a crap, and whyshould it? You can't use those bands here. It's impossible, unlessyou're running some rogue cell network, and let's face it -- if thatstarts to become a problem 'round these parts, the FCC has bigger fishto fry than a filing for a band you can't use.
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So that's our little tutorial into the deep, dark annals of FCC madness. It's a place we prefer not to go unless we have to, and a place we recommend our readers neverventure. When a device like the iPhone gets blessed, though, it'spretty hard to avoid. Of course, "quadband" doesn't mean "unlocked" inthis case -- AT&T still stands in your way regardless of where youplan on using the phone -- but at least you won't be stuck with nothingmore than a fancy lookin' iPod once you hop the pond.

寂夜清风

iPhone手机上市过审批关 美监管机构开门放行                        http://www.sina.com.cn 2007年05月18日 07:53  新浪科技
               
& g( @* z" i# Q& V8 J                                                                                                                                        　　新浪科技讯 北京时间5月18日消息，据国外媒体报道，美国联邦通信委员会(FCC)网站周四公布的文件显示，FCC已批准苹果iPhone智能手机在美国销售。
　　一位苹果代表证实了上述消息，称iPhone将于今年6月底正式上市。据悉，iPhone售价约为500美元，它集合了智能手机、iPod音乐/视频播放功能，上市后将与Research In Motion、Palm及三星等公司的产品争抢市场。
2 k8 J' q4 Y% T% `8 p6 H1 I4 O　　FCC文件还公布了iPhone的信号测试结果，但所公布的iPhone功能都是苹果此前早已透露过的。苹果要求FCC对涉及iPhone的图表及其他技术资料保密45天。
　　上述文件再次证实，iPhone将用于AT&T的EDGE无线数据网络，该网速率慢于AT&T的3G网。(明月)

piliyouhuen

没见过
贵不

34400

原来还没上市呢    以前只是露脸呀

iyanhf

还是比较期待的，不过目前来说，软件是个问题。