$500 via Verizon e-gift card (sent w/in 8 wks). Activation of 4G LTE/5G phone on 5G Get More plan 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.
On a 300/300 speed you should be getting about the same speeds or a little over from your router. Not less. 320/340 etc. it’s not a magical stopgap at just 300/300 sometimes it can be less.
now at less than a gigabyte it is possible to obtain router speeds and device speeds at near or over the 300/300 speed. Depending on the device like iPhones you could get a faster device speed. But like the other poster said it just could be a fluke.
years ago with cable internet my iPhone had the same speed as my then modem/router it always amazed me.