iPhone 4 - painfully slow wi-fi performance

I'm not running some massive network - the only things hooked up wirelessly are a Wii, an HP printer and the iPhone. A bit frustrating to have this expensive bit of kit refuse to work unless the network is set up for its sole liking.

Will check on firmware update - but wonder if the Wii and the printer will work on n only?

Same problem here. Super slow wifi on the Iphone 4. I have tried a restore, power cycling it and numerous differnet wifi networks all seem to be super slow, a lot slower than the 3GS. Any solution? I think this is going to be a huge problem with this phone. As previously stated maybe this was the problem steve jobs was having at the conference.

I can't answer that. But what I can say is that some APs don't have separate radios for the different wireless standards. In mixed environments it often affects performance of 802.11n kit. Some of the more expensive ones do. The earlier Apple Extremes did not but I believe the later models do.

I try my new iPhone4 wifi tonight and realize that I'm running super slow on Youtube HD video (much slower than 3GS wifi). I did try to change my Belkin router setting, but nothing change, still super slow and video stop by itself on iPhone4, while no problem running same video on 3GS.

Same problem for me. I have a 3GS in 1 hand & iphone4 in the other & I'm sat 4 feet from an apple router
& 3GS is perfect & 4 has 2 bars. What on earth have they buggered up?!

Same problem here guys. I tried everything. I even restored the iphone to its factory settings and reinstalled a the ios4. The customer care guy told me to toggle the airplane mode on and off a few times when the wifi gets stuck (the browser or the app store). It helps, but come on, i cant keep doing this every five minutes.. Ive had the same problem over three different wifi networks. keep this thread updated dudes.

If you have Iphone 4 with o2 wireless router (i'm on the premiere plan router) the iPhone seems to battle with the alternate channels.

Go into configurations on your wireless network and change the option to the

Interface Type: 802.11g

Should load from now on . . . . . I was having problems loading an email with nothing but one word in it and when on 3G it loaded instantly. I was miffed due tot he cost of the phone but this is the only fix I can see for the moment unless Apple update IOS4.

I too am having issues, the iphone 4 seems terrible over wifi, my 3G works 10 times faster than my new iphone 4. The wifi signal is virtually full all the time, yet when i try and upload a pic for instance via the photobucket app, it is so slow, goes on and off intermittently, eg. 120k/bps - 43k/bps - 12/kbps - 3k/bps - 0kbps then it fluctuates between very slow and nothing at all. Rang apple support and they tried to blame my router, which is the Netgear DG834GT on Sky Broadband running firmware V1.03.87. I've never had any issues with any other wireless devices, laptop, pc, printer, iphone3G, they all work fine. I've tried restoring the 4, no luck, altered the settings on my router, no luck, connected and disconnected the 4, no luck, tried it nest to the router, no luck, turned off every other wireless device, no luck.

Surely apple wouldn't make a device only capable of connecting via certain wifi routers????

Can anyone help??

bump bump 😉

We go through this every time any new Wi-Fi device is released.

Make sure your router has the latest firmware available from its vendor installed.

Some vendors are worse about adhering to standards than others.

Sure, it could be an iPhone bug, but it could also be the router - "every other device works with it" is not a valid debugging technique.

Having trouble with my Airport wifi. Turns out the N in the phone does not support 5Ghz. A little fact that Apple doesn't mention. In G mode - the 4 drops the connection frequently. Sitting next to the 4 is my 3GS which seems to hold the connection just fine. Sometimes the whole wifi set of bars on the 4 disappears altogether.

There is no latest update for the firmware of my router, it is the latest AFAIK, I have checked and found no updates available, what is the solution if it is the iphone 4? are we all going to have to buy compatible routers now? bad job apple IMO!

If it's an iPhone bug, it will be fixed in software.

If it's a LinkSys bug, they'll have to fix it.

My 3GS was faster downstream over 802.11g than the 4 is. I get 13Mbps down with the 3GS and 9-10Mbps on the 4. Upstream is faster on the 4 but not by much. Like 7 vs 8.

Also when connected via 802.11n the 4 performance gets even worse. I cant even get 1Mbps down.

So a distillation of all the comments to date seems to be:

Switch off 802.11N if your router supports it and all will be well?