I have been using these for 10 days now. I held off reviewing them until they had a chance to 'burn in'.
I normally use Koss PortaPro - Headphones ( semi-open )
, which I love, but which are a bit awkward to put in your pocket. I have never been a fan of in ear headphones finding the 'hard' type painful to wear. I've recently tried some soft silicon types and found them to be comfortable, even for extended periods, so I thought I would buy a pair for my new Smartphone.
The sound from these is generally very good, especially considering the asking price of £16 (complete with a nice hard case). There is a great deal of detail but a slightly bright presentation. Bass is more forceful than my Porta Pros but isn't quite as 'tuneful'.
The bottom line is that warm sounding recordings such as classical music and 60s pop records sound really nice with a real sense of atmosphere. However, some forwardness and colouration in the upper mid range / lower treble can make heavily processed modern recordings sound quite tiresome to listen to. A little EQ on my Sony Xperia Miro phone, to boost vocals and cut lower treble, helps to ameliorate this.
Edit: I forgot to mention the in-line remote works fine. If you want to skip tracks (forward or back) or adjust the volume you will need to install an app. There are several on Google Play and I use the free Jays headphone app. You need to run this before pressing the standby button on the phone and you don't need to touch the phone again. My iPod Nano also works with these and you can pause and skip but I haven't been able to adjust the volume on this as there are no dedicated volume buttons. I have also made a phone call using the in line microphone without any issues.
Edit 2: I am now using the Philips headphone app as I find it more reliable than the Jays one and it automatically runs when I plug in the headphones. I have turned off its audio processing features though. You do need to spend some time experimenting with the different ear buds and practice fitting the earphones. I push the cartilage of my ear back with my index fingers and push the earphones firmly in with my thumbs at the same time. This stops air being trapped in the ear canal, with the distortion this causes, but allows a decent amount of bass.