Back to Vodafone
It's been over 12 years since I switched from a personal to a corporate plan — back then I didn't need data, and unlimited SMS and calls were enough. Over time data became a necessity, but corporate plans have absurd pricing. 300 CZK for 1.5 GB of data, while abroad you can get unlimited data for the same price. So I did some digging and found mojeretence.cz. Retention plans are significantly more interesting, so for less than I'm currently paying I'll get unlimited data too. There's a small catch though — to transfer a number off a corporate Vodafone plan, you need the administrator password, which I don't have and nobody could tell me. Fortunately there's a slightly more convoluted but functional workaround: transfer via OKÚ, which I can generate myself in the self-service portal. The number then moves to a different operator and then back to Vodafone. Roundabout? Maybe. Effective? Very!