Most people's renoirs work fine, I'd like to believe you have faulty or fraudulent Renoirs.
What version of firmware does the phone say in Settings>Phone Settings>Information>Handset Information.
I have V10a.
Most version should work fine but depending on where you got yours from, it might be a rare bugged version, or someone may have installed a different software, realized the camera makes it freeze, and sold it on to you, or someone may have taken theirs back to the shop and you got a 2nd hand one, outrageous and disgusting but it can happen.
Are yours Renoir KC910i's q's or e's?
a silver ring & cover for the camera lens?
And does it say Schneider Kreuznach and Auto/Manual Focus on the ring?
Some have been found with just Schneider and Auto/MINual Focus, fraud ones from Korea.
Bought from proper phone shops or online?
There is a more active Renoir site than this one at
http://www.mygreatphone.com/forum/lg-kc910-renoir/If the phone is genuine and it's just the camera that doesn't work it may be quickly fixable using a program and an original camera software piece from someone else's Renoir.
As for your 'new' one Tillybaby, installing a completely different firmware may fix the USIM thing, if it's not faulty connectors/hardware, but I have never done this, there is information on how to do it on the site above.
