Originally Posted by big_z

No it's not. If you read the thread (including the last post) you'd see that there's a setting on CDMA networks that tells the phone how often it should check in with the tower to see if there's an incoming call. They call that the "slot index". The total time interval in seconds is 1.3 * SI + 1.3. You can look at your slot index by opening the dialier and entering ##DATA# (##3282#). When you hit the last pound sign (#) the phone will take over and ask you if you want to view settings or edit them. You need a code from Sprint to edit them but you can look at them on your own. My slot index was 2, so my phone is only checking in every 3.9 (1.3 * 2 + 1.3) seconds.

I was with TMobile for 5 years before I switched to Sprint, and there were times when I would call my dad (who's been on Sprint for a long time) and his phone would only ring once or twice even though I had heard 5 or 6 rings on my end. I don't remember exactly what phone he has; I think it's a Palm Centro.

Now, there also appears to be the issue of Android 1.5 not supporting CDMA natively, and that also appears to have something to do with it. But it is at least partially a Sprint issue.