A number of reports and Apple Support forum threads indicate that some iPad users are running into both overheating and Wi-Fi problems with their new devices. Most common among the Wi-Fi complaints are reports of a weak or fluctuating signal. Many of the users also note having other PCs, Macs, and/or iPhones on the same network, none of which exhibit the same issue.
One user in particular used the speedtest.net app on both the iPhone 3GS and the iPad, and found the iPad’s download speed was 1.83 megabits per second, compared to 14.77 megabits per second for the 3GS; upload speed was comparable. Apple itself has posted a support document outlining a problem where the iPad doesn’t automatically rejoin known Wi-Fi networks, although this appears unrelated to the problems reported in the forum threads.
In addition, The Atlantic has compiled a brief list of iPad users claiming their device shut down due to overheating during outdoor use.
According to the reports, the iPad shuts itself off when overheated, displaying a notification image along with a message that “iPad needs to cool down before you can use it.” One user reported that a reboot and moving to a shaded area fixed the problem, while another said his unit has shut down four separate times already. It is unclear whether the problem is actually attributable to sunlight exposure, outdoor temperature, or perhaps faulty thermal sensors, although one user did report his unit’s case was well over 90 degrees when it shut off. Apple officially lists the iPad’s operating temperature as 32° to 95° F.