its a very good phone i shifted to it from sony xperia p and both are compareable except in processor (1.5 dual core)and build qulity amaze takes the lead but nothing beats the clarity of bravia engine and white magic which is pre installed in xperia p. i was also told it cant be upgraded and fact is it cant be upgraded ota or like a normal phone since its bootloader is locked on t mobile. if you ve little knowledge about htc and android u can easily upgrade it as i did just by unlocking bootloader,doing s - off ,changing super cid and after that flash pre installed os and flash official ics rom for amaze by t mobile or even u can flash a custom jelly beans rom in it . after flashing many roms i concluded official t mobile ics rom is best for it and it works like a charm on it
p.s any amaze owner willing to upgrade his amaze can text me for guidance ill love to guide . thanks