I can't say much for OnePlus's support. On setup, Gmail presented many hundreds of emails from 2013 and doesn't receive new mail. Efforts to resolve the issue with OP have gone nowhere, despite their words of support, and promises to refer the issue to an expert, who is yet to contact me. Clearly, the phone is not fit for purpose and should be replaced or a refund made. Perhaps I should talk to the Ombudsman, who'll light a fire under them!
The phone works wonderfully. Exterior design is beautiful, and honestly, I haven't had anything to complain about in the little bit of time I have had it, not even the dual cameras. 110% worth the money plus some.