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Does iPhone's slow down network?


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cansurmeli

 
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Hi there.

Once I listened in a MacFormat Podcast that iPhone's connecting to modem's that doesn't support 802.11n standart slow down the general speed on the network.

Is it really true? If a switch to a modern modem that supports all the standards would I get better speeds when an iPhone is connected?
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chas_m

 
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If you have an 802.11n single-band wireless router set to b/g/n compatibility and no OTHER non-"N" devices on it, then yes an older non-"N" compatible iPhone will bring down the overall speed. Otherwise, no.
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I agree with chas_m.

Any b or g rated device that connects to an N rated network will bring the speed down to b/g.

By using a dual-band router you can create a b/g or just g network AND an N network so you can connect your devices to the appropriate network based on thier capability.

One of the alternatives to getting a new router is to add an N rated device capable of creating it's own network and attach that by cable to your existing kit.

E.g. you could connect an Airport Express to your b/g router and have it create an N wireless network for your N devices and retain your existing G network too.

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Quote:
Originally Posted by chas_m View Post
If you have an 802.11n single-band wireless router set to b/g/n compatibility and no OTHER non-"N" devices on it, then yes an older non-"N" compatible iPhone will bring down the overall speed. Otherwise, no.
That slowdown is not permanent but only during the time the non-N device is actually using the network correct?

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Quote:
Originally Posted by Slydude View Post
That slowdown is not permanent but only during the time the non-N device is actually using the network correct?
I think it would be more accurate to say, while the non-n device is connected to the network. Although, I wouldn't swear to it.

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It's also important to note that the iPhone 4 does support 802.11n but only on the 2.4ghz band, not 5ghz which can make a difference on how people choose to structure their network.

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