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Topic # 106637 28-Jul-2012 10:25
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I must admit I find some of the frequencies of carriers, especially for data really confusing so perhaps somebody can clarify this for me.

I had available a Telecom HTC Sensation. My daughter in the US was using a Nexus S (bought here) on T-Mobile and was getting 3G reception fine. But she has to send it back for repair so I mailed over this Sensation for her to use in the interim

Of course no problem with voice/SMS but she says she is only ever getting Edge.

Now GSMArena isn't the ultimate source of information but they for the Sensation (they don't say which model) it should receive

3G NetworkHSDPA 900 / 2100 HSDPA 900 / 1700 / 2100

Now T-Mobile appears to use

1700 MHz/2100 MHz UMTS AWS

But since this is a Telecom version the radio might only be HSDPA 850 / 1900 / 2100. That would explain why it worked fine on Telecom and 2D here with 3G reception but only gets Edge with TMO since there is no 1700?

Does that sound right?

I guess that explains why her Nexus S works on TMO since it has HSDPA 900 / 1700 / 2100.

Does that sound right?

As an aside she hasn't complained since she usually uses wifi and only mobile data rarely (even though she is on an unlimited data plan with TMO!)






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  Reply # 663204 28-Jul-2012 10:36
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That sounds right; T-Mobile uses 1700 for 3G in most areas.

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  Reply # 663205 28-Jul-2012 10:36
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It will get EDGE in most places as T-Mobile uses 1700 MHz in most places. It will get 3G in some 2100 MHZ areas.

I recommend you use AT&T when using a Telecom handset, since they both use 850/2100 MHz.




 
 
 
 




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  Reply # 663271 28-Jul-2012 13:30
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That agrees with my assumption. Not going to bother with having her get an ATT Sim because when the Nexus S is repaired it will go back on TMO.




System One: Popcorn Hour A200,  PS3 SuperSlim, NPVR and Plex Server running on Gigabyte Brix (Windows 10 Pro), Sony BDP-S390 BD player, Pioneer AVR, Raspberry Pi running Kodi and Plex, Panasonic 60" 3D plasma, Google Chromecast

System Two: Popcorn Hour A200 ,  Oppo BDP-80 BluRay Player with hardware mode to be region free, Vivitek HD1080P 1080P DLP projector with 100" screen. Harman Kardon HK AVR 254 7.1 receiver, Samsung 4K player, Google Chromecast

 


My Google+ page 

 

 

 

https://plus.google.com/+laurencechiu

 

 


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