1. I can't read persian text in SMSes and webpages. The list of languages now on my phone are english and eaatern asian languages
2. My full HD videos recorded by the Amaze are surprisingly in 3gp format
3. I wouldn't hate a bit of speed acceleration on my device.
I am guessing these problems can be solved with a custom rom (as unlocked version doesn't alllow an update).
I still don't know if I can get farsi (persian) aupport without rooting the phone and yes I have read some threads here by binary and other wonderful guys who have put time and effort into creating this wonderful website.
As u will see, I prefer not to root the device unless it is really inevitable.
Thanks in advance for your replies.