You can try the Web OTP API yourself by using 2 phones - use one phone to use the demo, the other to send an SMS message.
Use Chrome M83 or later on Android.
- Select your browser channel.
- Press "Copy" to copy the text message and send it to another phone.
- Press "Verify".
- From the other phone, send yourself the copied text message via SMS.
You can fork this demo and create your version by "Remix Project🎤".
One caveat is to enter HOSTNAME and ORIGIN of your new project to .env file.