I guess you are asking about differences between the versions of the OS...
Originally Posted by webos_ftw
The largest difference is that at 2.2.4 when you BlueTooth sync a Pre 2 to a TouchPad you get full, two way use of Voice and SMS text on the TP. Meaning you can send and receive calls and texts from the tablet while paired.
With 2.1.2 you get inbound only.
The only major "bug" I've had on my 2.1.2 Veer is that occasionally after a Luna restart or a reboot the screen lock goes away when you wake the device. It goes straight into the Main display or whatever App I have open. After a few sleep wake cycles the screen lock comes back on its own. Not a deal breaker for me and this is so minor, IMHO, it is the first I've ever even thought of mentioning it on the board.
Let me add this: If you look at Veer and Pre 2 spec the Pre 2 seems to win hands down with CPU speed and battery capacity...
However, having both devices I can say that Veer is actually pretty optimized. Right out of the box it performs pretty snappily and the smallish battery lasts, use for use, about the same as Pre 2 stock. Mostly that is likely due to the small screen drawing less power.
Add Preware + Govnah/UberKernel and you can overclock Veer to 1.402 GHz so Veer can actually edge out Pre 2 even starting from a lower base. I've tweaked both my phones pretty much the same. IMHO, Veer outperforms Pre 2 in every category except screen size. Use for use, my tweaked out Veer lasts about as long as Pre 2 with a Mugen 1400 mAH battery... Very close anyway. It's been awhile since I payed close enough attention.
Veer is a great performing phone. The sound quality and volume in-call shames the Pre 2. Probably the main reason I use Veer as a Daily and regret dusting off Pre 2 is that call quality. It's a phone. Calls are a number one priority. I have to struggle to hear callers on a Pre 2 in less than optimal listening conditions. Not so on Veer.
Next look at the data speed specs:
Pre 2 is HSDPA, 7.2 Mbps; HSUPA, 2 Mbps
Veer is HSDPA 14.4 Mbps, HSUPA 5.76 Mbps
I can tell you first hand I notice the difference every time I switch between the two. Especially when tethering...
Hope some of that helps. I know you asked about the difference in the OS versions and to me they both feel about the same. Biggest difference being BT sync with TouchPad. It is probably good to consider the hardware side as well. Veer feels more solidly built as well.
If you can deal with the size differential - I really say Veer outperforms Pre 2 by a very appreciable margin and the difference between 2.1.2 vs 2.2.4 is not that big a deal.
P.S.: If you get a Veer and really need that TP connectivity there are several fixes via Meta-Doctor, provided you can find a Veer 2.2.4 source.