Originally Posted by El Presidente
It's not to be honest with you. The initial software release had an issue with battery life, but HTC have since patched via an OTA update.
At the moment, with relatively heavy use, I get about 30 hours before I'm asked to plug in the charger. With minimal use, I could probably get over 2 days. Thanks to the Tegra 3 companion core, you lose relatively nothing when the phone is idle.
My friend is currently using the One X and he said its battery life was quite bad (admittedly it was 2 weeks ago and I don't know if the OTA update works for him or not), but if you managed to get 30 hours under heavy usage, the One X seems to be working really well. I will be waiting for the Galaxy S3 to see how Samsung can respond to such a good phone.