BCeSIM
eSIMDaily-pay eSIMs across 160+ destinations with carrier-grade plans
Best for: Travellers who want carrier-grade unlimited routes (Japan KDDI, Korea SKT) at transparent per-day prices, and long validity windows between buying and flying.
Overview
BCeSIM is the travel eSIM service of Billion Connect, offering plans for 160+ destinations from its official storefront. Most packages are daily plans billed per day — such as 1 GB/day or 10 Mbps/day unlimited — alongside fixed data bundles and true unlimited day passes on selected routes like Japan KDDI 4-day and South Korea SKT.
BCeSIM's catalogue is built around per-day pricing, which makes it easy to price out a trip precisely. On the Japan route, the IIJ-backed fixed bundles give you a full day of data at 256 kbps after the high-speed slice — 1 GB at US$1.89 (3 days), 3 GB at US$3.20, 5 GB at US$4.10, 10 GB at US$7.10, 20 GB at US$12.90 and 30 GB at US$17.90 — while the KDDI 5G line is genuinely unlimited at full speed: US$10.70 for 4 days, US$17.60 for 7 days, US$33.80 for 15 days and US$71.20 for 31 days.
South Korea runs on SKT with true unlimited data (US$21.22 / 7 days, US$48.40 / 30 days).
In the USA, day plans start at US$1.07 for 1 GB/day, fixed bundles run 1 GB / US$1.45 to 50 GB / US$29.60, and an unlimited 10 Mbps tier costs US$2.31/day.
Regional products such as USA+Canada, HK+Macau and multi-country Asia packs round out the catalogue.
Most plans list hotspot support explicitly, and eSIM carrier validity is generous (60–180 days from installation before activation).
Popular plans
| Plan | Data from | Validity | Price |
|---|---|---|---|
| Japan KDDI 5G Unlimited | True unlimited at full speed | 4 / 7 / 15 / 31 days | US$10.70 (4d) – US$71.20 (31d) |
| Japan IIJ fixed bundle | 1–30 GB, throttled to 256 kbps after cap | 3 / 5 / 7 / 15 / 30 days by size | US$1.89 (1 GB/3d) – US$17.90 (30 GB/30d); 10 GB US$7.10, 20 GB US$12.90 |
| South Korea SKT Unlimited | True unlimited on SKT network | 7 / 15 / 20 / 30 days | US$21.22 (7d) / US$37.22 (15d) / US$41.00 (20d) / US$48.40 (30d) |
| USA daily plans | 1 GB/day or 2 GB/day, or 10 Mbps unlimited | Per-day billing | US$1.07/day (1 GB) – US$3.13/day (2 GB) |
| USA fixed bundle | 1 / 5 / 10 / 20 / 30 / 50 GB | 3–30 days by size | US$1.45 (1 GB/3d) – US$29.60 (50 GB) |
| Hong Kong fixed bundles | 1 / 3 / 5 / 10 / 20 / 30 / 50 GB | 3–30 days by size | US$0.70 (1 GB/3d) – US$21.90 (50 GB/30d) |
| USA + Canada regional | 1 GB/day regional day pass | Per-day billing | from US$1.90/day |
All prices verified from the BillionConnect official API/storefront in September 2026 (USD). Per-day plans on 'unlimited' SKUs may apply per-destination speed tiers.
Pros
- Carrier-grade unlimited routes (KDDI 5G, SKT) rarely found elsewhere
- Transparent per-day pricing across 160+ destinations
- Long 60–180 day activation windows after purchase
- Explicit hotspot support listed on most SKUs
Things to note
- Storefront UX is utilitarian — long SKU lists take patience
- IIJ line throttles to 256 kbps after the high-speed cap
- Brand is little known outside Asia; fewer third-party reviews
Key features
- 160+ destinations on the official storefront
- Daily plans: 1 GB/day, 2 GB/day or 10 Mbps unlimited per day
- True unlimited day passes on routes like Japan KDDI and Korea SKT
- Regional bundles: Europe 33, Southeast Asia 5, USA+Canada