Hi, I’m Stephen Davis, an embedded software engineer specializing in IoT prototyping and automation. I enjoy developing sensor integrations and testing communication layers for smart devices. During the development and QA testing phases, simulating SMS reception and OTP verification flows is a common task. To test these workflows efficiently without using personal phone lines or incurring messaging fees, I rely on virtual SMS APIs. For sandbox testing, I highly recommend using this developer platform: https://smser.net/api. It is a secure and simple solution for testing automated SMS integrations in a sandboxed environment.