Posts Tagged ‘ipad wifi’

iPad 3G ripped apart by Gizmodo

01/05/2010

We’ve seen its communications board before, but now the entire iPad 3G has been torn open and had its parts analyzed. Here’s what makes it different from a Wi-Fi-only iPad according to the guys at iFixit:

* The immediate visible difference is the inclusion of a black plastic RF window on top of the iPad for better antenna reception.

* The black RF window significantly changes the opening procedure. You cannot start separating the display using the notches on the top (à la Wi-Fi version), since that will undoubtedly break the RF window. You have to start from the right side and gingerly proceed to the top and bottom of the iPad.

* There are actually FIVE antennas in this iPad: Two antennas handle the cell reception — one is in the RF window on top, the other attaches to the LCD frame. A single GPS antenna is also housed in the RF window on top. Just like the iPad Wi-Fi, there are two antennas that handle Wi-Fi / Bluetooth connectivity, one in the Apple logo and another to the left of the dock connector.

* You heard that right, folks: Apple looks to be using the entire LCD frame as an antenna!

* Who would’ve thought: Apple uses the same 3G baseband processor in both the iPhone 3GS and the iPad 3G.

* The baseband processor in question is the Infineon 337S3754 PMB 8878 X-Gold IC. It was actually white-labeled on the production unit, but with enough sleuthing we were able to confirm its true identity.

* The iPad 3G has a Broadcom BCM4750UBG Single-Chip AGPS Solution, whereas the iPhone 3GS uses an Infineon Hammerhead II package. Big win for Broadcom!

* Apple did not change any major suppliers between manufacturing the pre-production unit they provided the FCC and their final production run.

You can check see more gadget gore porn pictures and part details over at iFixit, but those are the basic highlights. [iFixit]

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Early iPad User Complaints: Weak Wi-Fi, Charging Issues

06/04/2010

Straight from MacRumors.com:

With the iPad’s U.S. release to the masses on Saturday, several complaints have arisen from users experiencing difficulties with their new devices. Two of the highest-profile complaints in the early days have been weak Wi-Fi signals and confusion over USB charging of the device.

Apple’s discussion forums have received a significant amount of activity regarding the Wi-Fi issue, which typically results in users receiving a significantly lower signal than computers or iPhones held in the same location relative to the access point. The reduced signal is resulting in slower performance and smaller range for many of these users. Users have also reported seeing significant fluctuations in signal.

Speculation has centered around the iPad’s external shell and power-saving measures as possible reasons for the Wi-Fi performance issues. While Apple has strategically placed the iPad’s Wi-Fi antennas to provide optimal reception, the device’s aluminum rear enclosure almost certainly shields reception to some degree. Additionally, some users have wondered whether Apple is supplying reduced power to the Wi-Fi hardware as part of its power-saving techniques that have enabled the iPad to meet or exceed its stated 10-hour battery life in many cases. Regardless of the cause, Apple has yet to comment on the Wi-Fi situation, although it has in the past quietly addressed similar issues through software updates when possible.

A second issue experienced by users has been difficulty with charging the iPad via USB. A number of users have discovered that their iPads refuse to charge when connected to USB ports on some computers, an issue that Apple has stated is due to the required power draw for the device. In a support document posted on the issue, Apple recommends that users charge their iPads by using either the included power outlet adapter or high-power USB 2.0 ports.

When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge, but only when it’s in sleep mode. Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.

The iPad’s charging demand stems from its large battery that drives a significantly hungrier device than most mobile handhelds users are accustomed to charging via USB. Consequently, lower-power USB ports have difficulty keeping up with the iPad’s draw, especially when the device is not in sleep mode. With the iPad’s U.S. release to the masses on Saturday, several complaints have arisen from users experiencing difficulties with their new devices. Two of the highest-profile complaints in the early days have been weak Wi-Fi signals and confusion over USB charging of the device.

Apple’s discussion forums have received a significant amount of activity regarding the Wi-Fi issue, which typically results in users receiving a significantly lower signal than computers or iPhones held in the same location relative to the access point. The reduced signal is resulting in slower performance and smaller range for many of these users. Users have also reported seeing significant fluctuations in signal.

Speculation has centered around the iPad’s external shell and power-saving measures as possible reasons for the Wi-Fi performance issues. While Apple has strategically placed the iPad’s Wi-Fi antennas to provide optimal reception, the device’s aluminum rear enclosure almost certainly shields reception to some degree. Additionally, some users have wondered whether Apple is supplying reduced power to the Wi-Fi hardware as part of its power-saving techniques that have enabled the iPad to meet or exceed its stated 10-hour battery life in many cases. Regardless of the cause, Apple has yet to comment on the Wi-Fi situation, although it has in the past quietly addressed similar issues through software updates when possible.

A second issue experienced by users has been difficulty with charging the iPad via USB. A number of users have discovered that their iPads refuse to charge when connected to USB ports on some computers, an issue that Apple has stated is due to the required power draw for the device. In a support document posted on the issue, Apple recommends that users charge their iPads by using either the included power outlet adapter or high-power USB 2.0 ports.

When attached to a computer via a standard USB port (most PCs or older Mac computers) iPad will charge, but only when it’s in sleep mode. Make sure your computer is on while charging iPad via USB. If iPad is connected to a computer that’s turned off or is in sleep or standby mode, the iPad battery will continue to drain.

The iPad’s charging demand stems from its large battery that drives a significantly hungrier device than most mobile handhelds users are accustomed to charging via USB. Consequently, lower-power USB ports have difficulty keeping up with the iPad’s draw, especially when the device is not in sleep mode.

Via MacRumors