# Korean Blog: Vodafone: A 31% improvement in LCP increased sales by 8%

Friday, April 23, 2021


We published a case study in Korean about how Vodafone optimized Web Vitals and found that a 31%
improvement in LCP led to 8% more sales, a 15% improvement in their lead to visit rate, and a 11%
improvement in their cart to visit rate. The case study was originally published [in
English on web.dev](https://web.dev/case-studies/vodafone).


[Start reading in Korean](https://developers.google.com/search/blog/2021/04/vodafone-case-study?hl=ko)