1. Snareman's Avatar
    Has anyone figured out if it will charge faster if you use a QC3 charger vs the apparently QC2 that comes with it?
    04-21-2017 03:09 PM
  2. SpookDroid's Avatar
    Nope. QC3 is not compatible with the S8, so it defaults to QC2 charging speeds even when using a compatible QC3 charger.
    04-21-2017 03:14 PM
  3. Snareman's Avatar
    Nope. QC3 is not compatible with the S8, so it defaults to QC2 charging speeds even when using a compatible QC3 charger.
    All I can say is, wow that is so stupid (that they put 2yo charging speed in it). I'd imagine there must be some logic for it somewhere.
    04-21-2017 03:17 PM
  4. SpookDroid's Avatar
    All I can say is, wow that is so stupid (that they put 2yo charging speed in it). I'd imagine there must be some logic for it somewhere.
    Yes, there is: Royalties. QC3 is a patented technology from Qualcomm and as such, they charge for the licensing. A comparable fast-charging technology from Samsung is already in the S8 charger, it's just not QC3-compatible.
    Ca_lvn likes this.
    04-21-2017 03:24 PM
  5. Snareman's Avatar
    Yes, there is: Royalties. QC3 is a patented technology from Qualcomm and as such, they charge for the licensing. A comparable fast-charging technology from Samsung is already in the S8 charger, it's just not QC3-compatible.
    And does the Samsung tech charge as fast as QC3? Of course this forces us all to only buy Samsung accessories if we want the faster charging. No buying more affordable 3rd party chargers.
    04-21-2017 03:27 PM
  6. SpookDroid's Avatar
    That's their claim, yes. And to be fair, their phones are the most compatible out there (QC, Samsung's, Standard, Qi Wireless, Powermat Wireless). It's not their fault that Qualcomm doesn't want to budge on QC3 royalties.
    04-21-2017 03:39 PM
  7. claykin's Avatar
    While the royalty may have played a role in the decision to not include new QC standards, I feel there's more going on than this.

    Samsung is the sole fab for the 835 chipset for Qualcomm. Without Samsung Qualcomm would struggle to get a 10nm chip of this density out the door in any reasonable quantity with high yields. Samsung surely could have negotiated a better deal if it mattered that much to their engineers and marketing staff. Something​ tells me there's more to this than a royalty.
    04-21-2017 11:06 PM
  8. Ageeb's Avatar
    I thought I read all 835's come with Qualcomm QC 4.0 embedded. Is Samsung shutting this down via firmware?
    blaine07 likes this.
    04-21-2017 11:09 PM
  9. EMGSM's Avatar
    Nope. QC3 is not compatible with the S8, so it defaults to QC2 charging speeds even when using a compatible QC3 charger.
    Thanks for the info. I was wondering as well. Too bad it's not QC 4.0. The 835 supports it.
    04-21-2017 11:50 PM
  10. Ecm's Avatar
    I thought I read all 835's come with Qualcomm QC 4.0 embedded. Is Samsung shutting this down via firmware?
    The 835 SoC may support it, but requires the hardware elements to provide the extra speed.
    04-22-2017 11:00 AM
  11. ClintRo's Avatar
    I use a QC 3.0 charger and it goes into Samsung fast charge mode.
    Ageeb likes this.
    04-22-2017 11:04 AM
  12. jeffmd's Avatar
    While the royalty may have played a role in the decision to not include new QC standards, I feel there's more going on than this.

    Samsung is the sole fab for the 835 chipset for Qualcomm. Without Samsung Qualcomm would struggle to get a 10nm chip of this density out the door in any reasonable quantity with high yields. Samsung surely could have negotiated a better deal if it mattered that much to their engineers and marketing staff. Something​ tells me there's more to this than a royalty.
    No it isn't the sole fab, many up coming phones will have 385's, incl sony, MS, and Xiaomi.

    There could be a number of reasons, maybe the temp tolerances for 3.0 were too high? Maybe there wasn't enough 3rd party support (samsung certainly does not make their own chargers, they rebrand someone eleses. As it is the charger included with the s8 seems to be the exact same charger included with the s7 wireless docks) for enough supply. Maybe there isn't enough testing to make it worth jumping in to. Maybe the royalties vs speed increases were not worth it for the common person? 8 million statistical reasons and you are looking for a conspiracy?
    04-22-2017 11:11 AM
  13. Ageeb's Avatar
    I use a QC 3.0 charger and it goes into Samsung fast charge mode.
    As I understand it, Qualcomm's quick charge iterations are backwards compatible.

    If so, that would make sense
    ClintRo and SpookDroid like this.
    04-22-2017 11:15 AM
  14. Kalvin Kerns's Avatar
    I use a QC 3.0 charger and it goes into Samsung fast charge mode.
    Which one? I use Choetechs with Ravpower per bricks, no dice work fast charging only regular speed. Disappointed.
    04-22-2017 11:47 AM
  15. ClintRo's Avatar
    It was an Anker car charger.
    04-22-2017 12:17 PM
  16. Kalvin Kerns's Avatar
    It was an Anker car charger.
    Oh I thought we were talking about wireless fast charging.
    04-22-2017 12:19 PM
  17. ClintRo's Avatar
    Quick Charge is only wired I think... There are fast charge wireless, but they only charge as fast as regular wired charger.
    04-22-2017 12:22 PM
  18. Kalvin Kerns's Avatar
    Quick Charge is only wired I think... There are fast charge wireless, but they only charge as fast as regular wired charger.
    Not true. There are fast wireless chargers, they just don't seem to want to work with my S8.
    04-22-2017 12:27 PM
  19. jeffmd's Avatar
    Quick Charge is only wired I think... There are fast charge wireless, but they only charge as fast as regular wired charger.
    There is now an adaptive charge variant for wireless. It needs to be specifically supported, ie you can have phones that support quick charge 2.0, but can only be slow charged wireless. Samsung has been using the quick wireless charge since note 5 and s6 edge+.
    04-22-2017 01:30 PM
  20. claykin's Avatar
    No it isn't the sole fab, many up coming phones will have 385's, incl sony, MS, and Xiaomi.
    I believe you are confused. The chip fab is the factory and process. It's 100% Samsung owned IP.

    https://en.m.wikipedia.org/wiki/Semi...rication_plant
    04-22-2017 02:16 PM
  21. ClintRo's Avatar
    There is now an adaptive charge variant for wireless. It needs to be specifically supported, ie you can have phones that support quick charge 2.0, but can only be slow charged wireless. Samsung has been using the quick wireless charge since note 5 and s6 edge+.

    Not true. There are fast wireless chargers, they just don't seem to want to work with my S8.
    I have regular wireless chargers and fast wireless chargers. Regular wireless charging is really slow and fast wireless charging is similarly to regular wired charging. I have used them since they came out. Fast wired carrying is faster than both wireless types of charging.

    Below is using the Samsung fast wireless charger.


    This is on the Samsung provided fast charger


    This is a non fast wireless charger
    04-22-2017 02:29 PM

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