iPhone 6 Three UK 'No Service'

That was what he said when selling it. Still had the protective covering on the device when it arrived.

Though, I believe it was in a 'Carphone Warehouse' box, would they outsource to Apple, or do their own in-house refurbishments?

Thanks for the link, I will give it a read through and will respond on whether or not I find a solution.

Thanks!

Ran through everything on the support page and it doesn't seem like the problem I am having is listed. I had actually looked at that page prior to posting. I even compared settings, such as which carrier version, with my own iPhone which has no problems. No significant differences whatsoever. The annoying thing was that while I was trying out all of this, I had reception the entire time. Shortly after that, it faded completely.

When it randomly gets a signal there seems to be no rhyme or reason to it, factors such as location have no impact whatsoever. Whenever it's user tried to use it out and about, there is no service, which in the case of an emergency is not ideal. What good is a phone if it doesn't work when you need it the most?

Any suggestions or ideas on what could be causing the sporadic, and largely nonexistent reception?

Also checked the warranty status and it is still covered until the end of the year.