For any member who would like to grab the swap deal but has no 'incompatible' phone to swap in...
Way back when we used C7 for a source, we bought a couple of LG sliders which supposedly had clear IMEIs - but which had been blacklisted - so they replaced them for free.
Those are sitting here in a box, unused & unusable for anything because their OS is so old.
I'd be happy to help an aspiring swapper here if anyone would find this to be helpful - just let me know.