SIMRelay

About

Tired of passing physical phones around the office for testing? SimRelay is the ultimate tool for development and QA teams that need to work with real-world phone numbers. It connects your browser to your team's pool of physical SIM cards, making remote testing of SMS-based workflows seamless.

With the SimRelay extension, you can:

VIEW YOUR SIM POOL: See a live list of all SIM cards available to your team, complete with easy-to-identify aliases and phone numbers.

LOCK & UNLOCK: Reserve a SIM card for your exclusive use with a single click. A countdown timer shows how long you have it locked, preventing conflicts with teammates.

AUTOMATIC OTP & SMS FILLING: When a locked SIM receives an SMS or a one-time password, SimRelay can automatically detect it and fill it into the correct field on your webpage. No more manually typing codes from a phone screen!

REAL-TIME SYNC: The extension stays perfectly in sync with your team. See instantly when a SIM is locked or released by a colleague.

QUICK COPY: Copy any phone number to your clipboard with one click.
SimRelay is an essential developer tool for testing:

- Two-Factor Authentication (2FA/MFA) flows
- SMS-based user registration and verification
- Mobile payment gateways
- Any application that interacts with real phone numbers