How do I determine the PID based on the SN attached to a module?

1. Sample modules are flashed based on the production credential and do not have SNs. You cannot query the PID based on the SN.

2. For mass-produced modules, you can download the PMS mobile client and log in with your PMS account to query the PID. (Note: You can scan the QR code only with an Android mobile phone to download the PMS mobile client through the browser.) If you have no permission, contact the business or project manager to activate it.