Now Apple has announced that it will be providing free Bumper cases to iPhone 4 users and refunds to existing Bumper owners, there’s never been a better time to get hold of some low cost protection for your device. UK-based case manufacturer Proporta is offering a novel spin on Apple’s generous deal by offering a 20% discount on all of its iPhone 4 cases and screen protectors – if you send them your (now free) iPhone 4 Bumper case that is.

Guy Monson co-founder of Proporta says “We at Proporta think it’s very generous of Apple and admire their commitment to solving the problem. We believe that it’s good for Proporta as it’ll help open people’s eyes to the need to protect their mobile devices – something we’ve been saying for the past 14 years… we realise that a free case is a free case and that a lot of customers will still want fully surrounded protection.”

Whether you see the deal as a handy way to upgrade your iPhone 4 case to fully surrounded protection or a sneaky marketing ploy, Proporta does offer a wide range of cases and the discount will certainly help out those in the market for a more sturdy cover.

Those interested can simply enter the promotional code “CASEFREE” at proporta.com to take advantage of the discount.