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Old Sep 14, 2012, 04:37 PM   #1
MyRomeo
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HSPA+ and DC-HSDPA on iPhone 5. 3G speed boost?

Hey,

So with all the hype of the iPhone 5 getting lte 4g capability and my network provider not supporting it just yet I thought I'd see just what exactly the 5 can do that my 4 or even the newer 4s can't.

So a little digging in the tech spec pages of the apple website and I notice two new 3G protocols have been added, both with significant speed boosts over those supported by the 4 and 4S.

The iphone 5 brings HSPA+ and DC-HSDPA to the table, both of which are supported by my provider an with speeds claimed to be up to 40mb! If this is true then who needs 4g!

So with these additions can anyone tell me what 3G speed benefits the 5 is likely to bring? It could be some time before I'm able to enjoy lte type speeds!

Ps, pre ordered 32gb white iP5 straight after they hit the store, delivery for release day
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Old Sep 14, 2012, 04:38 PM   #2
MattMJB0188
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Originally Posted by MyRomeo View Post
Hey,

So with all the hype of the iPhone 5 getting lte 4g capability and my network provider not supporting it just yet I thought I'd see just what exactly the 5 can do that my 4 or even the newer 4s can't.

So a little digging in the tech spec pages of the apple website and I notice two new 3G protocols have been added, both with significant speed boosts over those supported by the 4 and 4S.

The iphone 5 brings HSPA+ and DC-HSDPA to the table, both of which are supported by my provider!

So with these additions can anyone tell me what 3G speed benefits the 5 is likely to bring? It could be some time before I'm able to enjoy lte type speeds!

Ps, pre ordered 32gb white iP5 straight after they hit the store, delivery for release day

What I want to know is if the 5 supports 14.4 HSPA+ or 21 HSPA+ ?
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Old Sep 14, 2012, 04:40 PM   #3
MyRomeo
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Or O2 uk's 40+ dc-HSDPA
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Old Sep 14, 2012, 04:41 PM   #4
Intell
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The iPhone 5 uses the following 3G technolongies, HSPA+ (21.1Mbps), HSPA-DC, and LTE. It does not support any 4G technology such as WiMax, HSPA+ (>100Mbps), or LTE-A.
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Old Sep 14, 2012, 04:41 PM   #5
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Old Sep 14, 2012, 04:53 PM   #6
MyRomeo
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Sweet.
This should mean users of the O2 uk network (and possibly others) can benefit from the dc-hsdpa speeds in cities and the hspa+ speeds elsewhere.

For comparison, dc-hsdpa 3G at up to 42mb... EE launching the uks first 4g LTE network at up to 21mbps... Things could get interesting and I sure am looking forward to the 5 arriving next week!
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Old Sep 14, 2012, 05:03 PM   #7
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Isn't the 4s HSPA+?
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Old Sep 14, 2012, 05:05 PM   #8
kbmb
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Originally Posted by Pracht View Post
Isn't the 4s HSPA+?
4S only goes to 14.4.

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Old Sep 14, 2012, 05:06 PM   #9
Intell
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Originally Posted by Pracht View Post
Isn't the 4s HSPA+?
Yes, at speeds of 14.4Mbps. 14.4Mbps is the slowest version of HSPA+. The iPhone 4 and 3Gs have a downlink speed of 7.2Mbps.
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Old Sep 14, 2012, 05:09 PM   #10
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DC-HSDPA should keep us going until LTE rolls out more.
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Old Sep 14, 2012, 05:09 PM   #11
MyRomeo
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You sure the 4s is hspa+? No mention of it on the apple tech spec site, just hsdpa and hsupa
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Old Sep 14, 2012, 05:12 PM   #12
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You sure the 4s is hspa+? No mention of it on the apple tech spec site, just hsdpa and hsupa
Yep, as previous poster mention the 4S is hspa+ 14.4. When I called AT&T to try and get money off last year when it came out they kept mentioning that when I said I was going to jump ship to another carrier.
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Old Sep 14, 2012, 05:13 PM   #13
Intell
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Originally Posted by MyRomeo View Post
You sure the 4s is hspa+? No mention of it on the apple tech spec site, just hsdpa and hsupa
Very sure. It was one of their slides in the 4S keynote and AT&T trumpets the fact often as well.
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Old Sep 14, 2012, 05:24 PM   #14
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Originally Posted by MyRomeo View Post
You sure the 4s is hspa+? No mention of it on the apple tech spec site, just hsdpa and hsupa
It's on the tech page:
http://www.apple.com/iphone/specs.html

Only for GSM models obviously.

The also mention the speeds in the chart on this page:
http://www.apple.com/iphone/features/

-Kevin
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Old Sep 14, 2012, 05:36 PM   #15
shortcrust
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I find all this really confusing! I get around 4.5Mbps on O2 UK with my 3GS. Will I likely get faster speeds with the iPhone 5?
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Old Sep 14, 2012, 05:46 PM   #16
bp1000
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I doubt it

I've been geeky enough to run speed tests at various locations and ive never gone faster than 7Mbit on my iPhone 4s.

Includes, London, Birmingham, Manchester etc

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Old Sep 14, 2012, 06:43 PM   #17
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FYI, AT&T does not support DC-HSDPA.
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Old Sep 14, 2012, 06:49 PM   #18
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AT&T's network doesn't even come close to saturating my 4S's capabilities. I doubt DC-HSDPA will make a practical difference for US users. Should be nice for Europeans who don't have access to LTE yet though.
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Old Sep 14, 2012, 06:57 PM   #19
kbmb
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Originally Posted by austinguy23 View Post
FYI, AT&T does not support DC-HSDPA.
Correct. They do HSPA+ 21 were possible.....so in theory people could see higher speeds on their "4G" network....since the 4S is limited to 14.4....I'm guessing.

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Old Sep 20, 2012, 10:55 AM   #20
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Originally Posted by kbmb View Post
Correct. They do HSPA+ 21 were possible.....so in theory people could see higher speeds on their "4G" network....since the 4S is limited to 14.4....I'm guessing.

-Kevin
Is DC HSDPB only available in Europe? What markets have the faster HSPA+ up to 21?
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Old Sep 20, 2012, 10:59 AM   #21
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Is DC HSDPB only available in Europe? What markets have the faster HSPA+ up to 21?
I don't think anyone in the US uses DC-HSDPA.

As for HSPA+ 21.....I don't think AT&T specifies, but I believe in general when they upgrade a market, they are doing HSPA+ 21.....whereas I think T-Mobile is doing HSPA+ 42.

That's why I'm saying for those AT&T iPhone customers, the chip will now support the higher HSPA+ 21 speeds so even if you don't get LTE....you "may" still get faster 3G (or 4G) speeds.

-Kevin
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Old Sep 20, 2012, 08:51 PM   #22
biosci
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Thanks for clarifying! BTW, is it just me or is it totally ridiculous that ATT calls 3G 4G???


Quote:
Originally Posted by kbmb View Post
I don't think anyone in the US uses DC-HSDPA.

As for HSPA+ 21.....I don't think AT&T specifies, but I believe in general when they upgrade a market, they are doing HSPA+ 21.....whereas I think T-Mobile is doing HSPA+ 42.

That's why I'm saying for those AT&T iPhone customers, the chip will now support the higher HSPA+ 21 speeds so even if you don't get LTE....you "may" still get faster 3G (or 4G) speeds.

-Kevin
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Old Sep 20, 2012, 08:59 PM   #23
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Thanks for clarifying! BTW, is it just me or is it totally ridiculous that ATT calls 3G 4G???
AT&T's claim is more realistic than others'. LTE is still a 3G technology with 3G speeds, where as HSPA+ can reach 4G speeds.
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Old Sep 20, 2012, 09:14 PM   #24
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Thanks for clarifying! BTW, is it just me or is it totally ridiculous that ATT calls 3G 4G???
HSPA+ 21 and up, under the technical specifications is 4G.
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Old Sep 20, 2012, 09:18 PM   #25
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Originally Posted by kbmb View Post
It's on the tech page:
http://www.apple.com/iphone/specs.html

Only for GSM models obviously.

The also mention the speeds in the chart on this page:
http://www.apple.com/iphone/features/

-Kevin
Both of those links are for the 5. As far as I'm aware, Apple has never stated that the 4S supports HSPA+.
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