Why does this phone screen crack so easily?! Had it since Christmas n broke once, then got otter box defender, and took it off just for cpl min b/c everyone was saying they couldn't hear me, then it slipped and broke again the first time I took off otter box in cpl minutes! Lol. I dunno if this is normal but it's very slippery and screen cracks at the drop of a dime...or phone I should say.