Do not bend the cable aggressively; use the genuine leather carrying case developed exclusively for the K3003 earphones.
Check if your sound-tuning filter is screwed in properly for perfect sound quality.
Clean the filters occasionally with water and a soft cleanser.
For perfect stabilization and sound quality, use the sleeve that correctly fits your ear.
The K3003i earphones are designed for use with iPhone devices. For all other mobile devices, check out the product's compatibility requirements.