Render to texture works on computer, but not on iphone

My problem with render textures is a rather complicated one. I have two render textures in my scene, each rendering something different and each has a perspective matrix (from the same code) applied to it. Both of these textures work exactly how I want them to on my computer and on a computer app build. However, when I build it to the iphone, only one of these textures shows up. I was thinking that the iphone was somehow killing one render texture because the second texture was using too much ram, but when I deactivated the working render texture, and rebuilt the scene with only the one previously non-working texture, this texture still did not show up (just pure black) even though it was the only one in the scene. I have also built the scene with one working camera rendering its texture to two objects and tested this on the iphone and it works. Just some background knowledge, I have built an app using two render textures before that have been displayed correctly.

So my question is, why would both textures get rendered in the editor and in the play view and when built for the computer, but not get rendered when built for the iphone? I suppose I could try deleting the broken one and recreating it, but I still cannot answer the question above. I would love any suggestions.