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General Does the Charge not have EVDO 3G?

Discussion in 'Android Devices' started by Eric Bishop, Jun 6, 2011.

  1. Eric Bishop

    Eric Bishop Well-Known Member
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    Is this true? The specs list only shows CDMA 900/1800. Does this mean that there is only the relatively slower 3G option when you turn your 4G off?
     

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  2. Mikey P

    Mikey P Well-Known Member
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    I do know that my speed test on my charge is slower than my Thunderbolt. I was getting 1.5 download on my TB and only getting .5 - .8 on my Charge.
     
  3. Eric Bishop

    Eric Bishop Well-Known Member
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    On 3G, right? If that's your 4G download speed, you need to return that phone. Anyway, yes, I can't find a specs list anywhere that say that the Droid Charge has EVDO, Rev A 3G. So, it looks like you're pretty much committed to using 4G LTE if you've got the Charge.
     
  4. kyler13

    kyler13 Android Expert
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    From Verizon's website:

    Network:LTE, CDMA/PCS/1xEVDO Rev. A (800/1900 MHz)
     
  5. Mikey P

    Mikey P Well-Known Member
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    Yes, 3g for now
     
  6. ItsAboutTime

    ItsAboutTime Member
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    I want to be certain about the final conclusion of this thread. When a LTE (4G) signal is not available, the Droid Charge is receiving and processing the same 3G signal (assuming 3G is available) as a 3G only smartphone like the Incredible 2 is processing, correct? It is not processing some slower version of a 3G signal, is it?
     
  7. kyler13

    kyler13 Android Expert
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    Network:LTE, CDMA/PCS/1xEVDO Rev. A (800/1900 MHz)

    This is Verizon's full speed 3G network.
     
  8. GunnerJim

    GunnerJim Well-Known Member
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    The Droid Charge does 800/1900 MHZ CDMA 1xEVDO 3G radio signal just like any other 3G phone. The spec says:

    Network:LTE, CDMA/PCS/1xEVDO Rev. A (800/1900 MHz)

    Some phone manufacturers list as 800 and 1.9 GHZ, it is the same freq, also some break out Rev A or Rev 0, A is the higher standard which has better Quality of Service. See:

    Evolution-Data Optimized - Wikipedia, the free encyclopedia

    I have seen better 3G speeds in same location as a LG Revo and the HTC TB, I ran the test simultaneously, the pages loaded faster on the Droid Charge.

    As far as radios are concerned, the LG Revo has VoLTE capability that the Charge and TB do not have, which means when the service is finally activated the LG Revo will be able to make Voice/Data simultaneous over a 4G only network. The current 3 LTE phones use 3G radio for voice calls and the 4G radio for data to give the appearance of simultaneous Voice/Data in a 4G network area only. The HTC TB has a SVDO radio, that allows it to do 3G voice and data simultaneously.
     
  9. Eric Bishop

    Eric Bishop Well-Known Member
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    So, it sounds like Thunderbolt on 3G and Charge on 3G are communicating over the same network. The Charge isn't using an older version of the network.
     
  10. Yankees368

    Yankees368 Android Enthusiast
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    The charge falls back to the EVDO Rev. A 3G network, and then can further fall back to the 1x network.
    End of story.
     
  11. Rominucka

    Rominucka Well-Known Member
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    Haha last night right after first reading this thread my data connection completely disappeared for a few seconds, and what do you think pops up next? 1x!
    It jumped right to 4G too fast for me to see if it was just a mistaken showing of a dead symbol or true 2.5G

    Needless to say, as everybody else has said, the Charge is EVDO capable, but it might as well not be...I'll be surprised if I see the 1x symbol again for any lengthy period of time with Verizon's fine, fine, SUPER FINE signal!
     
  12. GunnerJim

    GunnerJim Well-Known Member
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    The 1X RTT is very slow on any Verizon phone, I hope you don't have to deal with that too often. The 1X RTT initial release - release 0 (zero) - supports data speeds peaking at 144 kbps. Typical real-world speeds are closer to 60-80 kbps. SLOW!

    A second release of 1xRTT was planned - release A - which doubled data rates at 288 kbps peak. Many carrier chose to skip 1xRTT release A, however, and move directly to 1xEV-DO.

    There are currently two main versions of 1xEV-DO: "Release 0" and "Revision A".

    Release 0 is the original version, and the first to be widely deployed. Rel. 0 offers data rates up to 2.4 mbps, averaging 300-600 kbps in the real world. This is much faster than the 50-80 kbps typically offered by 1xRTT technology.

    Revision A integrates most of the faster data technology originally designed for the 1xEV-DV Revision D standard, and improves latency. These enhancements allow features such as VoIP and video calling. The downlink (download) theoretical peak data rate compared to Release 0 is improved from 2.4 mbps to 3.1 mbps.

    Quoted from Phone Scoop...
     
  13. kyler13

    kyler13 Android Expert
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    Don't be too surprised to see it again. 1xRTT is used for your phone calls and your SMS text messages. I believe MMS is pushed over EVDO.
     

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