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165 posts

Master Geek

# 37058 7-Jul-2009 00:38
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I am using my iphone tethered to my macbook and have found the download speeds very low.   Speedtest shows download speeds around the 25-35 kb/s mark - that was in the Wellington CBD where my vodem comes in a lot faster.

I'm using a 3G with 3.0 software via USB.   iPhone APN on the phone.

Is there something I'm missing?  Overseas, people are reporting much higher speeds using a tethered iPhone.



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34 posts



  # 231866 7-Jul-2009 08:10
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I achieved 200 - 300 kb/s download with my mates iPhone the other day. Located in Whangarei. Did nothing special, just plugged it in and enabled tethering on phone.

Not lightning speeds, but its better than no internet when on the go.

165 posts

Master Geek

  # 231884 7-Jul-2009 08:49
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I have tried the CBD's of wellington and Dunedin where I get good speeds with my Vodem, but very slow with iPhone.

Hopefully others will have some thoughts..


179 posts

Master Geek

  # 231915 7-Jul-2009 09:56
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Hi. I dont have an iPhone yet, but Ive seen a similar issue with some other phones. It required me to tweak the MTU size back from the windows default of 1500.

Use the old ping -f -l [packet length] [server] to figure out the optimal MTU. Could be different on Vodafone vs XT. Or you could just wing it and go to 1400 and see if it makes a difference.

144 posts

Master Geek

  # 231922 7-Jul-2009 10:15
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ive tried this using it with my macbook pro... and iphone connected to XT network...
works like a charm... and real quick... just as quick as you would expect when using web on the phone itself... awesome!
GO XT :) hehe

165 posts

Master Geek

  # 231925 7-Jul-2009 10:21
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Thanks Folks - can someone confirm network settings they use when getting good speeds. APN etc? I am using standard VFNZ carrier file.

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Uber Geek


  # 231968 7-Jul-2009 12:17
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Yesterday I tried this for the 1st time.
Easy to set up.
Im in Te Rapa Hamilton.
I got 360kb.
Someone suggested I move over to near the Waikato Stadium as they have upgraded that area. Have yet to try that yet

GZMCC. Nokia Lumia 1020,Microsoft Surface Pro 4 i5 4Gb Ram,128gb, Cam Am Spyder F3 LTD.  GoPro 5 Black, Samsung Gear 3, Huawei P30 Pro

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Uber Geek
Inactive user

  # 231969 7-Jul-2009 12:21
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woody99: Thanks Folks - can someone confirm network settings they use when getting good speeds. APN etc? I am using standard VFNZ carrier file.

APN will not change speed


165 posts

Master Geek

  # 232155 7-Jul-2009 18:03
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Thanks Johnr,

Any thoughts from you as to why my speed is so slow?

129 posts

Master Geek

  # 232190 7-Jul-2009 20:19
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Hmmm, I'm interested in this as this is one of the reasons I want an iPhone

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