Brand new iPhone 4 bullt in week 31 and wi-fi is unbelievable bad. Anyone else here having same kind of issues? I have two access points/routers. One is Apple's own Time Capsule (dual mode) and second is Huawei E5 Mi-Fi router. Time Machine is configured to make 5GHz N-network and also 2.4GHz B/G network. Wireless channels are set by hand. Huawei makes normal B/G network (channel is different than on TC). Both/all networks require WPA2 password when joining. And here is the problems. I have to literally use the new iPhone 4 next to the router. If I try to find wi-fi network from four (4) meters away from router it won't find anything. From 2-3 meters I can get connection with one bar. When joining to Huaweis network situation is even worse. Right next to Huawei (about 5cm away) I get almost full bars but if I move the phone or Huawei 50-60cm I'm able to get just one bar. And it's not just the bars. Speed is also affected/bad. And I'm also aware that iPhone 4 N doesn't support 5GHz band so it will join to 2.4GHz (B/G) network. I have two MacBooks (Air and MBP), Mac Mini, original 2G iPhone and wifi iPad. None of those have had any wifi problems (not even iPad before 3.2.1 update). I get full bars almost anywhere in my apartment. I have tried to change settings from routers but without any help. So the big question. Is the problem because of the hardware or the software? I did some research and found at least one thread in Apple's own discussion forums where users are complaining about this very same issue. At least one user is reporting that problems also affects in 3GS model after 4.0.X update. There are also users that have changed their phone to new one and problems has disappeared. I have also found out that iPod touch users (2G/3G) are having massive wifi problems after iOS4 update. Also iPhone 3G users seems to be having some kind of problems (wifi greyed out). Maybe it's just because iOS4? It would seem that taking to repair/change could be the easiest solution but not here in Finland. Apple doesn't have any own service provided here so customers have to use third party service center and they don't repair phones. Every phone is changed to refurbished one and it takes weeks. Doesn't sound so good. iPhone is couple of hours old and If I take DOA device to repair I have to wait 3-5 weeks and after that I don't get a new phone. Maybe it's wise to wait iOS 4.1 update? EDIT: Forgot to mention that resetting network settings/restoring phone doesn't help.