I own a Xperia Ion. I have 3 major problems with this phone (rooted)
1. Led Brightness was very low (solved by changing the value of a file)
2. External Speaker Volume is very low (Coz of which my alarms and calls ring very low )
3. Phone heats up like I have thrown it in Fire!!!!! (this happens while playing games and using internet)
I am still searching for a solution for my problem number 2 and 3 and I have failed to get one after looking at or I would say searching the Xperia ion Thread!!!!!!!!
Can some one help in solving at-least the speaker volume problem or can some one direct me to a solution on the forum...