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Topic # 92587 2-Nov-2011 14:20
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I have my new iPhone 4S and tried speed tests over the cell phone network from about 4 difference places and the fastest I can get is 5Mbps down / 1Mbps up.

I've seen other people showing speed tests overseas (same phone different networks ) getting 12-15Mbps down.

What areas in NZ should I better speeds over Telecom's Network.

Wikipedia says 

"The network is HSPA+ enabled, with a maximum downlink transmission rate of 21.1 Mbit/s and an uplink rate of 5.2 Mbit/s attainable for capable hardware" 

The iPhone 4S does HSPA+

Thanks
 

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  Reply # 540347 2-Nov-2011 14:23
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iPhone 4S does not support HSPA+ DL

How can the phone get 15Mbps DL when the chipset only supports Max 14Mbps?

It supports 5.7 UL

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  Reply # 540350 2-Nov-2011 14:30
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johnr: iPhone 4S does not support HSPA+ DL

How can the phone get 15Mbps DL when the chipset only supports Max 14Mbps?

It supports 5.7 UL

John is right, the Apple iPhone 4S Tech Specs page says "UMTS/HSDPA/HSUPA", nowhere does it say "HSPA+". In saying that, this chart shows that the chipset does in fact support HSPA+:



but as this one shows, only up to 14.4 Mbps:


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  Reply # 540351 2-Nov-2011 14:30
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johnr: How can the phone get 15Mbps DL when the chipset only supports Max 14Mbps?

HSPA+ Mifi via wifi to iphone?




Hmmmm


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  Reply # 540356 2-Nov-2011 14:40
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5.7 Mbps UL is HSPA+ but 14.4 DL is not



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  Reply # 540358 2-Nov-2011 14:47
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johnr: iPhone 4S does not support HSPA+ DL

How can the phone get 15Mbps DL when the chipset only supports Max 14Mbps?

It supports 5.7 UL


15M is near enough to the Max 14.4 (speed tests aren't 100% accurate)

It seems my tests are always capped at 5M/1M from all the places I've tested (maybe I'm unlucky). Doing the tests over wireless I can easily get 35M/35M

The Specs says the iPhone 4S should be able to do 14.4Mbps HSDPA  and 5.76Mbps HSUPA . Or are there lots of different "types" of HSPA+  which limits it?

the iPhone 4 was 7.2Mbps  / 5.76Mbps 

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  Reply # 540447 2-Nov-2011 20:02
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You'll virtually never get to the theoretical maximum aside from on test networks, and probably not even then to be honest. Though it's definitely possible to get higher than 5mbps

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  Reply # 540449 2-Nov-2011 20:07
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HSPA+ and HSDPA are entirely different things - HSPA+ isn't just a 21Mbps upgrade to the 14.4Mbps maximum of HSDPA, it uses different modulation and different network resources.

Typically speaking it's entirely possible to get 10Mbps on a 21Mbps HSPA+ device and 5Mbps on a 14.4Mbps HSDPA device in the same spot at the same time.

Telecom also haven't deployed 5.76 HSUPA on XT so upload speeds are limited. Vodafone have deployed 5.76Mbps HSUPA across a number of sites now.

There could also be HSDPA configuration restrictions on sites, it the site may only be configured for 7.2Mbps HSDPA while theoretically it could support HSPA+ 21Mbps.

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  Reply # 540967 3-Nov-2011 23:14
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@sbiddle

Do you know if Telecom will deploy HSUPA Category 6 on the XT network ? It would be great to get the full functionality of my S2. Such as faster uploading of pictures to Facebook etc...

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