09-22-2011 02:18 PM
39 12
tools
  1. NismoZ's Avatar
    Does the Epic 4G Touch have the hardware to operate in the 800MHz band or at least in the EVDO RevB band?
    09-19-2011 03:49 PM
  2. JayWill's Avatar
    Does the Epic 4G Touch have the hardware to operate in the 800MHz band or at least in the EVDO RevB band?
    800mhz yes. Sprint doesn't have it provisioned for CDMA yet though. No clue about EVDO RevB.
    09-19-2011 03:54 PM
  3. Slingbox's Avatar
    Does the Epic 4G Touch have the hardware to operate in the 800MHz band or at least in the EVDO RevB band?
    Yes
    ...........
    09-19-2011 03:55 PM
  4. NismoZ's Avatar
    Yes
    ...........
    Both? And where is a link that shtells you that is the case? Thanks.
    09-19-2011 05:20 PM
  5. JayWill's Avatar
    800mhz support is listed in the FCC docs when this phone cleared.

    Regarding EVDO RevB ...

    UPDATE: Sprint Upgrading Existing 3G Coverage Area To EvDO Rev B October 7th? – GizmoFusion

    Not all current phones support EVDO Rev B, but we do know at a minimum the Evo 3D and Epic Touch 4G both in fact have Rev B compatible chips out of the box. Lets hope this one pans out.
    Data speeds may be getting better for us Sprint customers soon. Just in time for the iPhone eh? I really hope this rumor has some teeth to it.
    09-19-2011 06:37 PM
  6. tdoom15's Avatar
    Any updates to this? Will the entire 3g network be upgraded to this, as in it won't be like 4g where on certain areas get it?
    09-19-2011 07:15 PM
  7. Slingbox's Avatar
    Any updates to this? Will the entire 3g network be upgraded to this, as in it won't be like 4g where on certain areas get it?
    Yes the entire network will be 800mhz hot unlike current 4G.
    09-19-2011 07:50 PM
  8. JayWill's Avatar
    Any updates to this? Will the entire 3g network be upgraded to this, as in it won't be like 4g where on certain areas get it?
    I think we're going to have to wait until Oct 7th to get any specifics, assuming the rumors hold water in the first place. There's a lengthy thread on the XDA EVO 3D forums going on this subject if you want to dig into it a bit.
    09-19-2011 07:58 PM
  9. NismoZ's Avatar
    I think we're going to have to wait until Oct 7th to get any specifics, assuming the rumors hold water in the first place. There's a lengthy thread on the XDA EVO 3D forums going on this subject if you want to dig into it a bit.
    Any link to that?
    09-19-2011 10:08 PM
  10. Officerpolabear's Avatar
    What's the difference between EVDO Rev. A and EVDO Rev. B?
    09-19-2011 10:29 PM
  11. chuckz28's Avatar
    What's the difference between EVDO Rev. A and EVDO Rev. B?
    Rev b is about wimax speeds and offers better coverage.
    Officerpolabear likes this.
    09-19-2011 10:42 PM
  12. Droid800's Avatar
    Rev b is about wimax speeds and offers better coverage.
    Not quite wimax speeds, but its definitely faster than rev. a. Wimax has a peak of 128 mbit/s, while rev. b tops out at 14.7 mbit/s. So, figure about double the current top end for rev. a.
    09-19-2011 10:48 PM
  13. NismoZ's Avatar
    Double the speed, roughly... Google it for speed ratings.
    09-20-2011 07:37 AM
  14. chuckz28's Avatar
    Not quite wimax speeds, but its definitely faster than rev. a. Wimax has a peak of 128 mbit/s, while rev. b tops out at 14.7 mbit/s. So, figure about double the current top end for rev. a.
    Well my average wimax speeds are 2-4 at home and 8 at work. That's what I was going by. I would expect something in that range realistically.
    09-20-2011 08:22 AM
  15. Officerpolabear's Avatar
    Well my average wimax speeds are 2-4 at home and 8 at work. That's what I was going by. I would expect something in that range realistically.
    Well then, in theoretical speeds, EVDO Rev. B is a lot slower than Wimax but in real world speeds, it is around the same speed.
    09-20-2011 07:52 PM
  16. Droid800's Avatar
    Well then, in theoretical speeds, EVDO Rev. B is a lot slower than Wimax but in real world speeds, it is around the same speed.
    Maybe. It would depend on the implementation.
    09-20-2011 07:57 PM
  17. JayWill's Avatar
    Oh no ...

    So I was looking over the ifixit.com teardown here ...

    Samsung Epic 4G Touch Teardown - Page 2 - iFixit

    and on the list of chips on the motherboard is "Qualcomm QSC6085 CDMA Processor".

    In this chip's press release, it said:

    Qualcomm has announced the new QSC6085 single-chip product for CDMA2000 1xEV-DO Rev. A. This will deliver up to 1.8 Mbps speed on the reverse link and 3.1 Mbps on the forward link. The QSC6085 solution is pin- and software-compatible with previous-generation QSC products, including the QSC6055, QSC6065 and QSC6075. Separately, Qualcomm has announced the new Mobile Station Modem (MSM) MSM7850 chipset supporting CDMA2000 1x-EV-DO Rev. B. The company's recent field tests of EV-DO Rev. B resulted in average data rates of 9.3 Mbps on the downlink over 5MHz of spectrum. The MSM7850 device chipset provides support for EV-DO Rev. B with full backward compatibility, and is scheduled to sample in 2007
    I'm no tech guru, and it's certainly possible I'm missing something as I know just enough about this stuff to be dangerous, but it looks to me like the Qualcomm chip in the Epic 4G Touch DOES NOT support EVDO Rev B.
    09-20-2011 10:52 PM
  18. EeZeEpEe's Avatar
    Oh no ...

    So I was looking over the ifixit.com teardown here ...

    Samsung Epic 4G Touch Teardown - Page 2 - iFixit

    and on the list of chips on the motherboard is "Qualcomm QSC6085 CDMA Processor".

    In this chip's press release, it said:



    I'm no tech guru, and it's certainly possible I'm missing something as I know just enough about this stuff to be dangerous, but it looks to me like the Qualcomm chip in the Epic 4G Touch DOES NOT support EVDO Rev B.
    That's disappointing.
    09-20-2011 11:17 PM
  19. JayWill's Avatar
    Well I have messages off to Bryan at GizmoFusion and posted a question on iFixit. On the motherboard image for the E4GT, the Qualcomm chip is covered with a white label, so you can't see the actual model number stamped on the chip. I guess there's a chance that it was mislabeled when the guide was posted. Those tear down guys seem pretty detailed though, so I'm not exactly optimistic about that.

    I'd be pretty bummed if Sprint started rolling out EVDO Rev B and this phone wasn't able to take advantage of it. I know it's all "what if", and we are dealing with Sprint here, but meh I can't help but feel a bit bummed at the moment.

    Maybe I'm wrong. I do hope so.
    09-20-2011 11:42 PM
  20. Officerpolabear's Avatar
    Well I have messages off to Bryan at GizmoFusion and posted a question on iFixit. On the motherboard image for the E4GT, the Qualcomm chip is covered with a white label, so you can't see the actual model number stamped on the chip. I guess there's a chance that it was mislabeled when the guide was posted. Those tear down guys seem pretty detailed though, so I'm not exactly optimistic about that.

    I'd be pretty bummed if Sprint started rolling out EVDO Rev B and this phone wasn't able to take advantage of it. I know it's all "what if", and we are dealing with Sprint here, but meh I can't help but feel a bit bummed at the moment.

    Maybe I'm wrong. I do hope so.
    At least we don't get nothing, we get some more coverage. I'm just trying to stay optimistic.
    09-21-2011 12:15 AM
  21. kh4fun's Avatar
    For what it is worth. Sprint Customer service says that the phone is not RevB ready at this time. However when needed Samsung should have a fix to make it ready. Also they have no time frame on when RevB will start being rolled out or when 4G will be expanded.
    09-21-2011 09:48 AM
  22. John P. Smith's Avatar
    For what it is worth. Sprint Customer service says that the phone is not RevB ready at this time. However when needed Samsung should have a fix to make it ready. Also they have no time frame on when RevB will start being rolled out or when 4G will be expanded.

    Any statement from Sprint CS on this topic (and most others) is worth essentially nothing. Sprint does have a timeframe for network upgrades and we should know what it is on Oct. 7.
    09-21-2011 09:55 AM
  23. experiment 626's Avatar
    So EVDO Rev.B will equal the HSPA+ data speeds on GSM carriers?
    09-21-2011 10:07 AM
  24. NismoZ's Avatar
    A software update will enable it?! Seems like we need the hardware 1st. Anyone verify that we infact have a chip that can go 800MHz RevB?
    09-21-2011 10:17 AM
  25. JayWill's Avatar
    A software update will enable it?! Seems like we need the hardware 1st. Anyone verify that we infact have a chip that can go 800MHz RevB?
    Not to nitpick, but you're combining two separate things.

    The 800mhz ESMR band is currently used by Sprint for iDEN, which is its legacy Nextel push-to-talk network. It was announced awhile back that Sprint planned to provision that band for CDMA. So any phones that are capable of operating on that band, which our E4GT is, would immediately benefit, although the benefits are arguably minimal for most customers. But in the end it would boil down to "more bars in more places" for voice.

    EVDO Rev B is an evolution of the Rev A technology for the transmission of data. From my limited understanding, moving to it only requires some kind of software overhaul by the carrier, but in order to take advantage of it, a device needs to have the hardware, which from what I've been able to gather so far, the E4GT does not assuming it is indeed using the Qualcomm QSC6085 CDMA Processor.

    The EVO 3D does it seems, as the CDMA radio is integrated onto its Snapdragon SOC. It probably helps that Qualcomm created the entire SOC in that phone's case.
    09-21-2011 11:27 AM
39 12
LINK TO POST COPIED TO CLIPBOARD