You just spent a lot of money on a new phone. The second most important purchase you make shouldn’t be a streaming subscription or a pair of wireless earbuds. It should be a phone case. Today’s smartphones are feats of engineering covered in materials that have no room for any errors. The front is made of glass, the back is also possibly made of glass, and the two sides are connected by polished metal rails. It is an extraordinary piece of equipment that is quite challenging to handle. And that’s precisely why protection is non-negotiable. The glass problem nobody talks about at checkout. Phone makers have devoted years to the…