The ultimate guide to multi-SIM mobile proxies

A Multi-SIM mobile proxy can route new connections through different SIM paths behind one access point. That provides per-connection carrier-exit diversity for stateless workloads without promising that every connection will receive an address never seen before.

How multi-SIM rotation works

On a single-SIM path, the carrier controls the public exit and can reassign it. On Multi-SIM, each new connection can be routed through a different SIM path, so consecutive connections can use different carrier exits without waiting for a manual rotation request. That suits stateless workflows that benefit from IP diversity.

• Per-connection path selection: each new outbound connection can use a different SIM path.
• No link needed: per-connection path selection is automatic.
• Use a single-SIM endpoint instead when a task needs a longer-lived connection.

When to choose multi-SIM

Multi-SIM shines when you're running stateless automation that benefits from a different SIM path per connection. For a single logged-in identity, an assigned endpoint with plan-defined rotation controls is usually simpler and cheaper.

Protocol notes

Multi-SIM lines expose HTTP and SOCKS5 over IPv4 on the same endpoint. Each new connection can use a different SIM path, so applications should open a new connection when they need another path and keep one connection open when a short task needs consistency.