I have been an HTC Inspire user for almost two years. I am used to charging the Inspire and usually charged it twice a day. A price to pay I think for having a smartphone? Last week I traded for the HTC One X. I am having a lot of battery usage. The charge is lasting about 6 hours. I realize with the newer screen the usage would probably go up. I have watched some of the youtube videos on ways to lower your usage to get the battery last longer. The first time I charged the phone it took over 5 hours to charge. Now the charging time is around 2 1/2 hours. Yesterday I charged the phone in the morning but had to charge again in the afternoon and also in the car on the way home. The charge seems to be lasting a little longer today. I am hoping that over time the charging will level out. I think part maybe a result of playing more with the phone since it is new. Once I return to normal usage I am hopeful the battery life will improve. Other then the battery I think this is a fantastic phone. The size, the screen, the clarity, the apps all work very well in this phone. For better or worse I am committed to this phone for the next couple of years. But I do have 30 days in case the battery is a major problem over the next 4 weeks.
I did find one new function in the phone that I really like. When using the keyboard you have to switch to the number screen to enter a number or character. In the one X if you hold the key down the character switches from the letter to the number or character that you need. I like that a lot. I don't remember the Inspire being able to do that.