updated 05:10 pm EDT, Thu May 12, 2011
Connections weak, disappearing, missing
Some iOS devices are once again having trouble connecting to Wi-Fi hotspots, accounts say. Both media reports and posts on Apple's support forums indicate that after applying the iOS 4.3.3 update, an iOS device may start spontaneously dropping connections, repeatedly disconnect and reconnect, or even fail to connect at all. In some cases Wi-Fi status is misreported, or a stable link may involve staying too close to the router.
Backing the association with iOS 4.3.3 is that v4.3.1 devices can be in the same room and function normally. No permanent solution exists, although some temporary fixes may include turning Wi-Fi off and on in iOS, or resetting a device's network settings. A hard reset is another option, although in any circumstance Wi-Fi will still eventually drop.
Wi-Fi stability has been a recurring problem with iOS updates. Most famously these affected the original iPad immediately after launch, but issues have been present to different degrees as far back as 2009, and as recently as iOS 4.2.1. The current trouble affects all iOS handhelds, not just iPads.