Bluetooth + WIFI issue also happens on new Macbook Air (2013).
Since I got it (14 days ago) I've almost run crazy doing all kind of non-conclusive tests. As noted before by you, guys, it seems that it has something to do with a weird combination of router capabilities + the all-in-one AirPort card design or antenna placement + environment, when using the 2.4Ghz band.
My case, Lynksys WAG354G, 2.4Ghz, b/g.
Doesn't happen with old Sony Vaio. Doesn't happen with my 2010 iMac. DOES happen on a 2012 Macbook Air.
Happens sometimes at my office. Happens almost always at home. Right now, anecdotically, Bluetooth and WI-FI are playing nice together, but one hour ago they weren't, I just don't get it. This hassle is unnacceptable, I can't be always pending on when it works and when not...
[offtopic] I also lose WI-FI transfer rate when I have the Macbook resting on my lap in certain random positions. Bad antenna placement? Am I holding it wrong? [/offtopic]
As of now, a replacement is on its way, knowing it won't fix the issue, but it is worth the shot...
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mneonew wrote:
I was experimenting a bit, but I noticed that when I run a ping to a server (such as Google DNS, 8.8.8.8, I do this in Apple Network Utility), I can use my bluetooth keyboard and use the internet simultaniously on my Macbook pro. Has anyone tested this already? Of course this is not a permanent solution... but it's better than turning my bluetooth keyboard on and off the whole time I want something to load...
Funny thing is that my WI-FI + Bluetooth combo started working after I did try pinging google. I don't have it running on the background tho, I just ran 30 pings and stopped it. Coincidence? Maybe...Or is it because I plugged the charger in? I'll have to wait until it doesn't work again to try it again...
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One more funny thing. Searching Bluetooth + WI-FI issues found ppl complaining about this very same thing happening on their Nexus 4 phones and Google not admitting it or not willing to fix it.