Microcell: white vs black models

This is not a question, but just some info for anyone interested.

I had an older white Microcell (model DPH151) and just got a new black model (DPH154) and thought I would post some comparisons I measured (other than the physical differences, which are obvious):

Power Consumption:

I measured the "idle" power draw of both models using their stock AC adapters. By idle I mean powered up, fully activated/online, but with no call in progress (probably the most common condition):

White model: 13 watts

Black model 6 watts

This is a notable improvement, although in the scheme of things not really a big difference; in my area that amounts to about $12/year in electricity saved with the black model. I also measured both devices with the same 3rd party 12v AC adapter and got the same results, so the power savings are due to updated electronics in the new model, not any differences in the AC adapters they come with (although the new one comes with an efficiency "Level V" adapter and the old one is "Level IV").

Cell Strength

I measured cell strength at 3 locations around my house. I put my phone in diagnostic mode to test the cell strength. Numbers closer to 0 are better.

White model:

Position 1: -30 dB

Position 2: -80 dB

Postion 3: -99 dB

Black model:

Position 1: -30 dB

Position 2: -76 dB

Position 3: -97 dB

The new black model came out slightly ahead but these numbers are so close I'm calling it a statistical draw. It's possible there are some modest improvements in signal strength but certainly nothing to buy a new device for. 

(Notes about testing: the iPhone can be put into diagonstic mode by dialing *3001#12345#*. The cell strength is measured in dB, which is a measure of signal loss, so the numbers are always negative and closer to 0 means less loss. Since the phone was sometimes slow to update the display after being moved, I put the phone into airplane mode and then back to regular mode before taking each reading. Also, our property has zero AT&T service... in fact there is no service for at least a mile... so I think the results of this test are not affected by any real AT&T towers, but I can't know that for sure.)

Cell Data Speed

I made a few measurements of 3G data speeds (with my phone's wifi turned off), but the results were so inconsistant I won't bother to report them. I assume the data speeds are influenced by the speed of my internet connection, which of course can vary for unpredicable reasons. Hopefully anyone using a Microcell has a wifi network, so 3G data speeds are not relavent.

Not Tested:

- Activation/startup times. Anecdotally the models seem to be about the same (~5 minutes after the first activation).

- Number of call drops

- Audio quality while on a call