At the top, the motherboard of the iPad 3G, below that of the Wifi model
Not even a day after the arrival of the first iPad 3Gs in the hands of American customers, the first images of the interior of the device also arrive. To provide, as always, iFixIt, a reality that deals with the sale of components and spare parts for Apple products, but which has stood out for years for getting its hands on all the Apple products and showing how they are made inside, revealing interesting details.
The 3G model doesn't have many differences compared to the Wifi version. The only external, as known, the coverage of the cellular signal antennas located at the top. It is a piece of black plastic that, underlines iFixIt, changes the opening procedures of the device.
Once inside there are five antennas. In addition to the two for the Wifi signal which are also present in the other model, there is one for the GPS and two others for the cellular network. One of the two for the data signal located in the upper part, near the plastic section like the one for the GPS, the second one connected to the edge of the LCD screen. In practice, Apple engineers used the entire display frame to increase the signal strength.
The baseband processor, the one that manages the reception of the cellular network, the already known 337S3754 PMB 8878 X-Gold IC from Infineon that Apple also uses in the iPhone; the GPS processor is different. Apple uses an Infineon Hammerhead II in the phone, switches to a Broadcom BCM4750UBG in iPad; iFixIt points out that this is an important achievement for the American semiconductor company.
In this regard, one must take note of the impressions of the first users of the device which underline how the GPS performance of the iPad is significantly higher than that of the iPhone. Gizmodo claims to have noticed that after an initial uncertainty in the connection of the signal, the iPad firmly maintains the connection even in conditions where the iPhone loses it or finds it difficult to remain in line with the progress of the journey.