So I previously had an Otterbox Defender on my SGS3 (phone prior to my OP3), and I could never get over how slippery the only Otterbox case available for the OP3 was; I have dropped my phone a couple times because of this - I could never have a phone without a properly protective case. So having already paid so much for the Otterbox and my trust in their cases to protect from drops as proven MANY times over from somedrops taken by my SGS3, I decided I'd try to make the plastic outer shell a little more grippy. Picked up some (way overpriced, I know, I know, I could have simply bought another case) Flex Seal for about US$19 while I was at the hardware today. Here is the result:After testing it out a bit and playing with the spray distance and intensity, I found that light short bursts from about 3-4ft away worked best. Make sure you spread some newspaper or something to catch overspray (which there will be if you're doing this right) and that there's not much breeze around - this stuff is messy when you use it like this. I didn't want to add much bulk to the case, just give it a nice grippy texture.This came out exactly how I wanted it to. Good luck if you're trying, just thought I'd share!