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July 16, 2009 9:23 AM PDT

iPhone coverage at 11,000 feet

by Kent German
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Go ahead, make the call.

(Credit: Kent German/CNET)

Last weekend I traveled to Mammoth Lakes in California's eastern Sierra Nevada. If you've never been I highly recommend it for its spectacular mountain scenery (Convict Lake is a highlight).

My family has visited the area for at least three generations, but the last time I went (give or take 20 years), the concept of a cell phone barely entered my mind. This trip, however, I took along CNET's iPhone 3GS. Not only did I want to use some of the travel-friendly apps, but I also wanted to gauge AT&T's service in the relative wilds of California.

As any iPhone owner can tell you, coverage is on the device is far from perfect. While that would be understandable in rural areas, it's rather frustrating that in major cities like San Francisco you can suffer from a weak signal right in the middle of town. Indeed, the poor reception is a major reason reason why any iPhone version has failed to win our Editors' Choice award.

I even got it here.

(Credit: Kent German/CNET)

So you can imagine my astonishment at receiving a perfect AT&T signal on the very top of 11,000-foot Mammoth Mountain. I had taken the gondola up one morning and I wanted to use Facebook to upload a few photos of the fantastic view. Though I fully expected to receive no reception at all, I actually had a solid signal with five bars. I snapped the photos (check out my slideshow from the trip), uploaded them and updated my status without a hitch.

Though I later spotted a cell phone tower on top of the gondola station, I couldn't get over the fact that I had a stronger iPhone signal there than on my patio in San Francisco. Sure, the tower was no doubt installed to benefit winter skiers, but I still thought it was pretty cool. I even got a signal while hiking in Devil's Postpile National Monument, which is 6,000 feet below Mammoth Mountain but outside a line of sight.

So I ask you this, AT&T. If I can get a perfect iPhone signal in a rugged valley and on a mountain peak, why do I drop a call on the corner of 18th and Sanchez in San Francisco? That's just not right.

Kent German is a senior editor for cell phone reviews at CNET. When he's not testing the newest handsets on the market, he's blogging about cell phone news for Crave. In his On Call column, he answers reader questions and gives his take on the rapidly changing mobile industry. E-mail Kent.
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Add a Comment (Log in or register) (23 Comments)
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by monkeyfun14 July 16, 2009 10:13 AM PDT
I swear if I hear one more sub-par story about an ordinary experience turned into news because an iPhone was involved i'm going to flip.
Reply to this comment
by setgo July 16, 2009 11:31 AM PDT
No you won't. You know you like it. That's why you keep clicking on the iPhone headlines. Stop perpetrating!
by mbenedict July 16, 2009 2:10 PM PDT
The irony is that the iPhone 3GS (like all iPhones) has a maximum operating altitude limit of just 10,000ft.

Anything goes wrong above this altitude and Apple will blame it as user error... just like getting discolored 3GS in hot climates.
by monkeyfun14 July 16, 2009 2:28 PM PDT
@mbenedict
What about inside a plane?
by Cedarx July 16, 2009 10:40 AM PDT
The Iphone is mentioned very often around Cnet... but I'd imagine that's because the Iphone is more popular. More people have Iphone= More people interested in Iphone-related news. And no one's forcing you to read these blog posts...
Reply to this comment
by monkeyfun14 July 16, 2009 10:42 AM PDT
I know but it gets excessive.
by eadeguzman July 16, 2009 10:56 AM PDT
Hey Kent, you didn't have to go to the mountain to find out. You can just find the cell tower how high it is, how high is the top of the mountain and if there are any concrete obstruction between that place and the top of the tower.

In San Francisco, it's tricky because of all the buildings and not all buildings are created equal. Some are "friendlier" to cellphone signals than others.

Also, that's a sensational title "iPhone coverage at 11,000 feet". It should read "AT&T coverage at 11,000 feet".
Reply to this comment
by Charleston Charge July 16, 2009 11:08 AM PDT
No I'm pretty sure an iPhone, and only an iPhone could perform such an amazing feat as receiving a signal from a cell tower.
by monkeyfun14 July 16, 2009 11:12 AM PDT
@Charleston Charge

+1
by yipcanjo July 16, 2009 11:17 AM PDT
Cnet: Titling articles accordingly to receive more hits.

Nice work. Clearly this could not have been accomplished on any phone *except* for the iPhone! </sarcasm> But who wants to read "RAZR coverage at 11,000 feet"?
Reply to this comment
by Jeff Putz July 16, 2009 11:28 AM PDT
I've had a decent signal in the middle of Volcanoes National Park on Hawaii's Big Island too. I was shocked. It wasn't 3G, but I had full bars.
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by Perry_Clease July 16, 2009 12:38 PM PDT
A month and half ago I was at Yosemite, both up in the meadows and down in the valley, and had a signal on my iPhone. Mostly Edge though, not much 3G.
Reply to this comment
by CorpCray July 16, 2009 12:41 PM PDT
Has anyone considered that there could be a combination of factors contributing to poor coverage in the city and the Bay area. First, astronomical realestate prices, got to put the cell tower somewhere, building density, hills blocking line of sight to existing towers, etc. I remember five years ago there was no signal in the middle of town while T-Mobile and Verizon where great. AT&T/Cingular/SBC/ and whatever they were before they merged all the regional providers into one company just didn't have much of a presence in SF and they have always been behind the curve on network expansion. Not an excuse for not getting it done by any means, but a little history.
Reply to this comment
by cvaldes1831 July 16, 2009 6:42 PM PDT
A big part of the problem with AT&T's signal strength in places like SF and downtown NYC is apparently due to the fact that they're currently broadcasting on the higher frequencies. I recently read that AT&T is trying to deploy transmitters that function on the lower frequencies which have better range.

Still, if you compare apples to apples, it's lame that cellular customers in major U.S. cities have far crappier reception than customers in Western European cities.

Metropolitan iPhone users harshing on AT&T is completely justifiable.
by roycifer July 16, 2009 1:21 PM PDT
drop down into the backside of the mountain and forget about any cell phone coverage.
Reply to this comment
by Perry_Clease July 16, 2009 2:43 PM PDT
Or decent cup of coffee for that matter. I bought a cup in Lee Vinning and I swear that they dipped the water out of saline lake.
by adhetola July 16, 2009 1:23 PM PDT
enough of this BS already! cmon, first 2 or 3 days were bearable, but seriously, not everyone cares that much, enough to be force-fed updates daily. perhaps you want to combine the posts and have whoever is interested follow u there?
Reply to this comment
by baconstang July 16, 2009 1:35 PM PDT
I get pretty good Virgin (Sprint) signals in most of SF, except, of course, at my home on Russian Hill.
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by windooor7 July 16, 2009 1:58 PM PDT
APPLE does not compromise. one year later, light years ahead.of Now networks.
Reply to this comment
by iroq321 July 16, 2009 2:08 PM PDT
OMG, i totally need an iPhone, I'm going there this weekend!!! How will I ever communicate to the outside world without an iPhone!!!??? Ahhhhh!!!
Reply to this comment
by Perry_Clease July 16, 2009 2:44 PM PDT
Heliograph
by cdxskier6 July 16, 2009 9:19 PM PDT
I'm telling you, I have AT&T SOLELY BECAUSE OF IT"S GREAT RECEPTION IN RURAL AREAS! It works at our lake, where no other provider does. And they get about $200/month for mobile services from us as a result!
Reply to this comment
by rsfinn July 21, 2009 8:58 AM PDT
"If I can get a perfect iPhone signal in a rugged valley and on a mountain peak, why do I drop a call on the corner of 18th and Sanchez in San Francisco?"

Because from the top of an 11,000 mountain, you probably have line of sight to dozens of cell phone towers. In the middle of a city, you keep getting blocked by tall buildings (because AT&T has apparently not placed enough cell sites).

This has been another episode of Physics You Should Have Learned in High School. Recommended for all tech reporters and AT&T executives. :-)
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