Since I now have reviewed the HTC One in every way possible, I’m just going to do a short post now, noting on new findings and experiences.
First up, here’s the links to all the previous HTC One reviews and more.
I discovered a setting in the default web browser. Go to the web browser settings, accessibility and tick “dim screen while web pages loading”. A nifty battery saving tip.
I have changed the auto brightness off. It’s too bright. I have a manual setting which works just fine.
The HTC One also has USB on the go. So far I have tried connecting a USB memory stick and a small USB hub all of which worked fine. Unlike my Samsung Note 2 you do have to go into settings, storage and tap unmount USB before detaching from the phone.
I also tried connected a Fiio E17 headphone/dac via USB. This worked really well, and I am pleased that the HTC One has USB audio out as a standard feature. As a comparison you can get USB audio out from the iPad Mini, iPhone 5 and older Apple devices, but as Apple control the authentication aspect, any USB DAC subsequently costs a premium due to the royalties Apple charges and their bespoke connectors. At least with the HTC One it is using a worldwide standard micro USB connection.
Connecting the Fiio E17 via USB to the HTC One, and using the DAC on the Fiio you begin to realise just how capable the One is in the audio department. Truly astonishing. And for the full affect you can use the Fiio E17 as a USB DAC only and feed the signal to the Fiio E12 Mont Blanc Portable Headphone amplifier, as shown below.
Just to clarify for those not as technically minded, plugging the USB on the go cable (thats the small black cable coming out of the One) into the HTC One, then enables you to connect the digital analogue converter, and then that sends the analogue sound to the portable power amp. Your headphones plug into the portable power amp. Using this method bypasses the built headphone amp, DAC & Beats on the HTC One, but does provide a much cleaner and even better audio. No sound comes out of the speakers or headphone jack with this connection setup either.
And the USB on the go cable also allows you to connect USB mouse, keyboard and more. I’ve only tested the USB audio and memory sticks but I’m fairly sure the others will work too.

