How do I deactivate/cancel my service to my lost phone?
one if you want to keep the number port out to a new carrier or number holding service or activated a replacement phone will cause the lost pone to be deactivated
if you Don’t care about the number Cancel My Republic Service
also My phone is lost or was stolen - now what?
Sorry to hear of your misfortune. You can discontinue/cancel your service by logging into your My Account portal, selecting the phone/line of service, and selecting cancel in the drop-down menu for that device.
If you wish to keep that phone number you will need to take additional steps to preserve it. Let us know if you would like some suggestions for doing that.