$540 via promo credit when you add a new smartphone line with your own 4G/5G smartphone on postpaid Unlimited Plus plan between 5/18/23 - 5/31/23 & port-in req'd. Promo credit applied over 36 months; promo credits end if eligibility requirements are no longer met.
after I get everything set up and working, can I remove the LAN cable between the gateway router and my internet router. I am running everything wireless
Yes, you can follow the setup wizard to configure the Gateway Device to use wireless instead of wired (Ethernet).