Is there anyone who has experience successfully bringing a OnePlus 6t phone to Republic Wireless?
Hi @carlanb and welcome to the Community!
Republic does not support any OnePlus models and, therefore, Republic’s app (required for Republic service) will not activate a Republic SIM in one. Republic’s unique (sufficiently unique to be patented) blended WiFi/cell service requires one of the carrier agnostic factory unlocked phones listed here: Republic Wireless Phones – Republic Help. You’ll want to be certain the phone you wish to bring is an exact model number (and in some cases build number match) for those listed.
This Republic Help Center document walks you through the entire process of bringing a phone sourced elsewhere to Republic: How to Bring Your Own Phone to Republic Wireless (BYOP) – Republic Help.
Even better is this contribution from a fellow member (Republic likes to call customers members) linked here: How to Find a Compatible Unlocked Phone.