RoamVault

About RoamVault

A budget eSIM brand sold through the MobiMatter marketplace rather than its own storefront.

Ultra-budget per-GB pricing, from well under a dollar per GB on some plans.

Coverage and features

Strongest in Asia — Japan, China, South Korea and Southeast Asia — plus selected Europe, Middle East and USA plans; hotspot is enabled on most listings.

Good to know before you buy

Purchases and support run through the marketplace rather than the brand itself, and independent review coverage is thin — check the specific listing terms before buying.

Best for: bargain-hunters after cheap per-GB data in Asia.