Victor recently bought a One Plus 8 Pro mobile phone from Swappa, but while it was unlocked, it was unlocked through the boot loader. Is that OK? Leo says that some people think it's better. But it won't take Google Pay. Leo says that Google Pay looks for a locked boot loader for security. If it's unlocked, then it isn't secure for taking payments. So that's why you can't use Google Pay. Leo says Victor will probably have to root the phone to make Google Pay work again. Check at XDA-Developer Forums for how. You'll want to search for your specific model number. Also, search for how to use Google Pay.