Allan : looks like you are the first with teardown of the S4. How about the size and speed of the new LPDDR 3 type of DRAM you found in it. How many dies for the DRAM ? How are they packaging all his ? PoP ? How much gap beteen the 2 packages stacked one over the other ?
I received a couple of the Qualcomm variants of this phone last week. Although I am impressed with the RFID and IR remote capabilities and other features (oh yeah, and the phone), my main issue is the locked bootloader that hinders flashing of standard Android on the device for those who don't care for the Samsung flavor. This is the main downside to me for getting a non-nexus Android phone regardless of features.
That is correct. The original Google mantra of the "open" Android system has since essentially been closed by the US carriers as far as the consumer is concerned. The maintenance of the original galaxy S phones were discontinued years ago, yet I had the most recent Android jelly bean on my 3 year old phone simply because it was flashable and therefore self-serviceable. Now I've lost hot spot, flashability, and some other carrier crippled features as a consequence of "upgrading".
Blog Make a Frequency Plan Tom Burke 17 comments When designing a printed circuit board, you should develop a frequency plan, something that can be easily overlooked. A frequency plan should be one of your first steps ...