When it comes to protecting your smartphone, a screen protector is a must. At its most basic level, a screen protector can protect against dirt, smears, and dust from constant use, but also guards ...

The screen protector on my Galaxy Z Fold 4 had lifted, and instead of taking it to a repair center, I replaced it myself.

Once upon a time, back when the front of smartphones were all generic flat slabs of glass, buying a tempered glass screen protector was a piece of cake -- almost any brand would work, and worked well.

The best screen protectors can protect your phone from scratches, cracks or even shattering. We spoke with repair experts ...