SignalStrength values: what's the difference between cmda and evdo?
<p>On a Verizon phone, a Motorola Droid X2, if I get the signal strength with a SignalStrength object and look at its values, both the cdma and evdo values appear valid. </p>

<p>If I print out a signalStrength.toString(): </p>

<pre><code>09-09 11:48:00.678: INFO/ConnectionStatusAndroid::onSignalStrengthsChanged(4773): *** Signal Strength:SignalStrength: 99 -1 -87 -70 -63 -1 5 cdma 0 0 0 0 0 0
</code></pre>

<p>If the phone gives out apparently valid values for both cdma and evdo, then what's the difference? </p>
