S5 Lock Screen Issues

A

AC Question

I was using my phone this morning and a few strange things happen. First, it told me my swipe pattern was incorrect (definitely not the case). I used my backup PIN to access the phone. Then I noticed that the phone was not requiring me to provide a swipe pattern or a PIN to access the phone so I went to change that. I went into my settings (lockscreen) and tried to reinstigate my swipe code. However now the phone is accepting my PIN (the very same I used earlier today!).

I have my phone in flight mode as I'm worried I might be getting hacked and from what I understand I'll need to do a factory reset (which I definitely don't want to do).

Can anyone provide me with any info? I just want to get my lockscreen working again and to know if I'm being hacked or not.

Thanks!!!