great phone, battery life is pretty good, as long as you don't watch lot's of movies.
ROM upgrades are very bad, especially if you want to Upgrade to Arabic enabled windows.

In overall it is a great phone. Thanks

How's the battery life of O2 XDA Stellar???
I'm already using O2 XDA Atom. It cost me a whopping Rs.38500 approx. 855US$. It had problems since the very beginning. For instance it used to hang a lot initially I actually had an argument with the retailer for changing the software. However there was this low continuous buzzing sound coming from it earphone. Many times it used to hang when we used to press the power button to put it on standby mode, then I had to press the reset button and wait for it to start all over again

Its a good phone with amazing features but battery life is really very very poor. I used to charge the battery 3 times a day. I am planning to shift to Blackberry Storm but saw O2 coming up with XDA ORBIT II & Stellar. O2 is an awesome phone to use provided they give us with dual battery(prime & secondary) that XDA mini had.

O2 should come up with a
1) Dual SIM
2) Dual Battery

This is what most people need. It will be a hit.

OK my bro

Upgraded from an O2 XDA Mini S (HTC Wizard) to the O2 XDA Stellar (HTC TytnII - Kaiser) and it's great!

Only problem for me is that the front keys seem a little loose and can move about a bit - not a problem really!

Adding different alarm tones is easy, they live in the Windows folder on the root of the device. The Stellar didn't come with the tones I was used to from the Mini S so I bluetoothed them over (message alert tones and alarm tones) and these pick up no problem.

Ringtones can be added by placing MP3's / WMA's etc on the root of your memory card.

I bought a Sandisk 8GB MicroSD from MemoryCardZ (a seller on Amazon) for £34 also...

Has built in GPS so no need for an external bluetooth device anymore too!

Overall, an exceptional phone!