Why doesn't my Samsung Galaxy S5 auto focus?

[AC Question]

My Samsung Galaxy S5 Won't Auto Focus

After having the rear lens replaced by a professional because the original cracked a large spilt in the middle the auto focus doesn't work! Before then a green ring would appear, but now it doesn't and I get sort of blurry photos if I zoom in n auto focus it. The guy said he didn't do anything to the internal lens when I ask him if there would be any problems, but this just happened after getting the lens replaced. I don't want to have to factory reset this if that is a last resort and I've cleared the cache on the camera already. What seems to be the problem that I don't see the green ring anymore? Also my phone is updated with the Lollipop since Verizon released it.

 

[B. Diddy]

Re: My Samsung Galaxy S5 Won't Auto Focus

Welcome to Android Central! How did the crack occur--was it dropped? After the crack appeared but before the repair, was auto-focus still working? Did the repair guy only replace the glass over the lens, or the actual lens itself?