While we are adding specifications, I would love a good spectrum analyzer function, with good dynamic range, sensitive receiver, and tracking generator capability.
Give it a band spread from 100 Mhz. to 4 Ghz, and demodulate AM/FM/PSK/QPSK/CDMA/P25/TETRA and decrypt AEC-512 encryption algos'.
Give the phone real usage value as a secondary spy tool.
I miss my ZK-SAM, and would love to be able to scan CDMA network data from the phone, as you could with the old AMPS phones, such as the Star Tac. That is one phone I wish they still made and updated with Android.
I am a test equipment addict, so I look for real world use, not glitzy and shiny things of no relative use to me. I would love to be on a call to a customer, and have the ability to scan his network's data, and transmit that data in real time, back to the customer, not set up a truck load of test gear, take measurements, store the data and code it into something the customer can decipher.
Since I am not a software person, but a hardware person, he interface can begin life as a cludge-work of applications, but in a final version, it would need to be cleaned up, assigned functions for buttons, not seven apps for a single button, that will get confusing.
One main button to actuate a given operation, another to read the data, and another to save and send said data. Possibly, an app can be applied to a few buttons, but certainly not all.
From simple site measurement, to advanced metrics of complete data acquisition. Signal strength, RF power of each channel, forward and reverse channel data, overhead data, hand-off data, tower to tower signal data, relative RSSI from each panel antenna, downtilt, everything a cell site needs for peroper and consistent operations.
THAT, is what I would love to have in MY handset.
I suppose the form factor would need to be enlarged to encompass the tablet sizes, as the RF architecture would require far more board real estate.