Right hand side cellular antenna

Hello,

I have an iPad 4 A1460 model that I am changing the screen on for a friend. It was dropped on the top and so as I have been removing all the glass splinters, I have slit one of the right hand ribbons. There are two on the top and I slit the right hand one of the two.

I am wondering if this is going to need replacing or if it will have no affect on the iPad performance.

I don't seem to be able to find a breakdown of the cellular iPad 4 or be able to buy the part if I need one.

There is a ribbon underneath from the bottom which is fine and then two on the top one of which is slit.

Could someone shed some light on this please. If it needs replacing it will just be easier to do before I put the screen back.

I have put it back together but not sealed it, and I have some signal but no idea if it is low because of being inside and bad signal or because the flex is cut.

Thanks so much in advance.

Peter