What is wrong with data calls in .04???

[Verizovictim]

I just re-downgraded to .02. I have had rzrs in 03, 02, 04 over 03 and 04 over 02. in all possible configurations, 04 is -extremely- more likely to fail to initiate a data call than either 03 or 02.

If we wait for Verizon to fix this, in like, 05, (optimisticaly) $10 says they gut obex and MPT-compatibility too.

It's like, what a changed value or maybe the 'dithering' logic between Ev and 1x mode? I did notice when I 'forced EV-DO' once, things began seriously to suck.

All this observed in one location. EV-DO never works well here... hm... possible clue? My .04 phones -do- try to use EV first then switch to 1x before giving up. My 03 phones also try EV, switch to 1x, *then succeed, every time*....

Hypothesis: Does .04 have problem switching to or using 1x?

Wish I knew enough to properly investigate this... guess I'll have to start readin', heh heh.

 

[Verizovictim]

Significant progress.

My .04 version is now able to reliably connect in 1X mode, in the same physical location noted above as being problematic. I used Debug mode to force HDR PREF to 'CDMA'

This suggests the problem lies in switching to 1X from EV-DO, when the phone is in "HDR Pref ==>AUTO" mode.

In this location, when I set "HDR Pref ==>HDR" I couldn't even get service in .02.

Strangely, in .02, .03, and .04, with HDR PREF==>Auto, the phone frequently displays "EV" but ALWAYS switches to 1X when actually initating a data call from this location. Vers. 2 and 3 almost always succeed; ver 4 rarely does. Again, in this location. Elsewhere, the phone can make EV calls more reliably.

So I see a strong indication that the problem with 04 is:

"In places with low or non-exiistant EV-DO, the phone tries EV-DO, then switches to 1x, this happens correctly in vers 02 and 03, but 04 cannot switch modes reliably"

Anyone have any idea where to compare that functionality between versions?