The quad-play bundling market is growing globally, with many providers now offering fixed telephony, broadband, pay TV and mobile. Adding mobile to a fixed triple-play bundle offers providers the opportunity to significantly increase customer value. Quad-play can offer substantial benefits to providers, driving a decrease in churn and increasing average revenue per customer. But combining fixed and mobile services can be challenging and may drive an increase in the complexity of bundles. Simplification is therefore crucial in creating successful quad-play offers. Our report looks at the impact of bundling on customer value, churn, and revenue - and profiles three operators who have deployed quad-play services, assessing their KPIs and strategies.