Turn any Android phone into a programmable SMS gateway for your SaaS — no per-message fees, no carrier contracts, no vendor lock-in.
I Built an SMS Gateway with a $20 Android Phone – Jonno.nz
A security researcher demonstrated how a $20 Android phone can be repurposed as an unsecured SMS gateway, enabling unauthorized message transmission and potential abuse by attackers or malicious SaaS providers. This setup bypasses carrier restrictions and vendor controls, exposing organizations to SMS-based phishing, spam, or fraud at scale.