Here are a couple of well-known examples:

Bitrefill: This company is known for its wide range of gift cards and mobile top-ups that can be purchased with crypto. They also offer a variety of eSIM data plans for different countries and regions, which you can pay for using Bitcoin, Ethereum, and other digital currencies.

MobiMatter: This is a global eSIM marketplace that connects travelers with different data plans. They also provide the option to pay with various cryptocurrencies, including Bitcoin and USDT (Tether), offering a convenient alternative to traditional payment methods.

When you use a crypto payment option for an eSIM, the process typically involves scanning a QR code or sending the exact amount to a provided wallet address, making the transaction instant and secure.