http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/ Engadget Mobile Comments for Video: Android walkthrough on T-Mobile G1 http://www.engadgetmobile.com/media/feedlogo.gif http://www.engadgetmobile.com en-us Copyright 2009 Weblogs, Inc. The contents of this feed are available for non-commercial use only. Blogsmith http://www.blogsmith.com/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/Sep 23rd 2008 11:46AMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/Sep 23rd 2008 12:27PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/
AT&T's 3G network operates only on 850/1900 frequency bands, and Tmobile USA's 3G network runs only on a 1700 frequency band.

The G1 only has two 3G radio bands in it... a 1700 band for use on Tmobile USA'a network, and the 2100 band for everywhere else in the world.

Just like if you could unlock a iphone 3G to use a Tmobile USA SIM. Useless for 3G. Would only work for voice and Edge services.

So unlocking either device for use in the US is pretty limited in uses. For use overseas where everyone uses the 2100 3G band, it makes a lot more sense.]]>Sep 23rd 2008 4:05PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/
The only way this will happen before 2 years is if Google allows other maufacturer's to make a Android phone overseas (ie, where TMobile or Deutsche Telekom does not have coverage), and that manufacturer chooses to include a 850/1900 3G radio in it.

Then you could buy the phone, unlock it, and slap your AT&T SIM in it. But that's not likely. If someone does make another Android phone soon, it will probably only have the non-US 2100 3G band in it.

A more pertinent question will be how this will affect the Google apps on the iphone. (ie, Maps, YouTube, the Google app in the App store, etc) Will Google continue to update and improve these apps, or will they get stagnant and always offer less features than their G1 counterparts? Will Apple continue to have their competitor's apps on their phone, or will they start offering other options instead? (ie, a Mapquest or TomTom app to replace Google Maps. Get rid of the YouTube app and just have people use a iphone optimized web version through Safari. Etc) Perhaps more emphasis with Yahoo! now? (God knows Yahoo! could use the boost that tighter iphone integration and the increased exposure to Yahoo! services that the iphone could bring)

It will be interesting to see how nice Apple and Google play together in the future once Android starts making a dent in iphone dominance.]]>Sep 23rd 2008 4:19PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/Sep 23rd 2008 12:26PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/Sep 23rd 2008 1:18PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/Sep 23rd 2008 1:27PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/Sep 23rd 2008 2:11PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/Sep 23rd 2008 2:33PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/
Shane, I think you've got the frequencies wrong about the G1 - GSM frequencies in the US are 1900Mhz and 850Mhz. T-Mobile uses just the 1900Mhz frequency and AT&T uses both the 1900 and 850Mhz frequencies. ]]>Sep 23rd 2008 4:45PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/
Tmobile uses NA1700MHz for 3G, and ATT uses 850MHz & 1900MHz. The G1 does not support 3G on 850 or 1900MHz.

The G1 will only support EDGE at best over 850/1900MHz, but you could still ue wifi for faster data if it was unlocked and put onto ATT.
]]>Sep 24th 2008 10:31AMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/
here's a great informative link to clear up any confusion:

http://www.gsmworld.com/roaming/gsminfo/cou_us.shtml

]]>Sep 23rd 2008 6:58PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/Sep 24th 2008 10:31AMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/Sep 23rd 2008 7:10PMhttp://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.engadgetmobile.com/2008/09/23/video-android-walkthrough-on-t-mobile-g1/http://www.wirelessadvisor.com/ and type in your zip code to see what frequencies are available in your area. Mine for example is 46250 and AT&T uses:

SYSTEM: 850 MHz, 1900 MHz, 700 MHz(future) -- call freqs

TECHNOLOGY: GSM / GPRS, EDGE, UMTS / HSDPA -- 3G freqs

and the G1 phone supports:

Quad band GSM / GPRS / EDGE: GSM 850 / 900 / 1800 / 1900 -- call freqs

Dual band UMTS / HSDPA / HSUPA: UMTS 1700 / 2100 -- 3G freqs

So at first glance I am good for use of it, but I guess only experimentation will tell. besides if it fails for me I can always sell it on EBAY :)]]>Oct 16th 2008 6:33PM