Originally Posted by travelinmanS

You can only register upon entry. I did it at PVG terminal 2 where you register before getting your passport stamped. At T1 I believe the registration is after the stamping. Just ask the guards they’ll tell you where to go.

I think it’s only foreigners on Residence Permits with over 6 months until expiry and foreigners with Permanent Residency who are allowed to register, but not 100% sure.

Pre Covid I also registered for this at the Futian crossing which didn’t require me to be leaving or entering China like the airport registrations do so it was a nice choice if you’re in Shenzhen for a few days and want to get it done.