$500 via Verizon e-gift card (sent w/in 8 wks). Activation of 4G LTE/5G phone on One Unlimited for iPhone (all lines on account req'd on plan), 5G Do More, 5G Play More or 5G Get More plans req'd. Device must remain active for 45 days. $500 charge back if service cancelled w/in 12 mos or eligibility req's are no longer met. See vzw.com/bring-your-own-device for details.
According to a quick Google search, it is Rev A. Rev A's biggest advantage is higher uplink speeds, better handoff between sites, better idle power savings, and better multiplexing if you use web, email, telnet and other internet applications simultaenously.