For British Indian Ocean Territory eSIM options, only one provider, Esimatic, currently offers service. This focus allows for a streamlined selection process for travelers heading to this unique set of islands. Despite having a single provider, there are 8 distinct British Indian Ocean Territory eSIM plans available, catering to various data needs and trip durations. These plans offer an average price per GB of $3.42 and an average daily cost of $1.72, providing clear options for those requiring connectivity in this remote location.

For a travel eSIM in the British Indian Ocean Territory (BIOT), specifically on Diego Garcia, the primary mobile network available is **Sure (Diego Garcia) Ltd**. This is the sole operator providing cellular services in the territory, meaning your eSIM connectivity will rely exclusively on their infrastructure. Given the remote nature of BIOT and the limited network options, ensuring your travel eSIM is compatible with Sure (Diego Garcia) Ltd is critical for reliable communication. While eSIMs offer flexibility, the concentrated network availability in this unique location means confirming provider support is even more essential for seamless connectivity.

As of now, there are no free data eSIM plans available for the British Indian Ocean Territory. This remote location, often accessed via cruise ships or specialized charters due to its protected status and limited public access, typically requires travelers to rely on satellite-based communication or seek plans that offer international roaming if their primary carrier supports it in such an isolated area. Given the British Indian Ocean Territory's unique characteristics as a highly restricted travel destination, standard consumer-grade mobile services are not readily available. Travelers should plan for connectivity limitations and explore alternative solutions well in advance of their visit, as traditional eSIM options for casual data use are not present.

Unfortunately, there are no unlimited data British Indian Ocean Territory eSIM plans currently available. Due to the remote nature of the islands, specifically Diego Garcia which is primarily a military base, connectivity options are limited and typically offer capped data allowances.