Filed under: Bugs/Recalls , iPhone A number of iPhone 3GS owners have reported slow and inconsistent data speeds, along with widely varying amounts of signal strength, when using Wi-Fi. Users note that signal strength can fluctuate between one and full bars even when standing right next to the router or when a computer nearby shows a constant signal. This goes along with a commensurate reduction in speed. Even at full signal on both the computer and the 3GS, one user reports getting a maximum of 3Mbit downloads on the iPhone while getting nearly 7Mbit downloads on a MacBook using the O2 network. The fluctuating signal strength problem has affected me since I brought home my new iPhone 3GS. The other, more widely reported problem is a sizable speed decrease in the iPhone 3GS as compared to the iPod touch and iPhone 3G tested under the same conditions

original Source : iPhone 3GS users report slow or inconsistent Wi-Fi connections