eSIMzio is a travel eSIM app for iPhone and Android with prepaid data plans for 200+ countries and regions. Every plan shows the real network operators, the exact data allowance and any fair-use speed limits before you pay — no fake "unlimited". Plans start from £2.00, delivery is instant, and installation is by QR code or one tap. Most plans can be installed up to 365 days after purchase, so travellers can buy before a trip and activate on arrival. The app is available in 15 languages with prices in 21 currencies, and every purchase earns 2% cashback.