When the haemorrhaging of sales from its traditional core businesses is aggregated, Telstra had to find $736 million in sales from somewhere just to stand still. In the end, with total sales up 1.1%, it found slightly more. Most of those extra sales came from Telstra's mobile business, which added 1.6 million customers last financial year and has now added about three million new customers from that moment last year when David Thodey decided the group had to be more competitive on price. That coincided nicely with a mass migration of Vodafone's customer base because of its network quality issues. The result was an 8.5% increase in revenue from mobiles, a three percentage point increase in margin, to 36%, and a $500 million increase in the business's earnings before interest, tax, depreciation and amortisation. Relatively recently, Telstra raised the pricing of its mobiles, which perhaps indicates a shift in tactics from volume gains to enhanced profitability. Those tactics might not be confined to mobiles.