Conclusion: Extremely easy to use with my phone! The ear buds do not fall out, and the sound quality is perfect for music, and for phone usage. Perfect for using the phone when it is not easy to remove the phone from your pocket. The sound quality is as I have always experienced with Sennheiser ear buds.
Excerpt: I'm usually a Sennheiser fan but these are pretty rubbish. The cord is set in an awkward position (the divider part is too close to the neck and can't be adjusted), the sound is pretty much rubbish and as the cord rubs off your ears or skin it makes a sound in your ears.