One interesting note about the iPhone 4S launch was the implementation of Tx/Rx antenna diversity for the GSM radio. My house gets dodgy coverage due to being in a forested valley, and a tin roof on ...

Right, so does each company raise their own antennas? I think that they share antennas (or bandwith on them rather). Does one company raise an antenna and then lease bandwith to others? Is there one ...

A new collection of teardowns reveals the differences between Apple's different versions of the iPad 2, comparing the components of the Wi-Fi-only, GSM and CDMA models and discovering similarities ...

GSM and CDMA are the two ways phones talk to cell towers. Pure GSM phones won’t work on a CDMA network, and vice versa. At home, on your home network, this isn’t an issue. When you’re travelling, ...

Apple has seemingly learned its lesson after the whole Antennagate debacle. The company just announced some bold internal updates to the iPhone, with the release of the iPhone 4S (full details). The ...

Today's mobile phones need to not only support cellular frequencies, but also non-cellular features such as those used for mobile TV, Bluetooth, WLAN, and location-based services. As the real estate ...