Help Unable to change lock screen picture s3 mini

[tlcoull]

i have just done a factory reset as was having performance issues with my galaxy s3 mini. I now can't make a picture from my gallery my lock screen background. I can change the home screen but not lock screen. I only seem to be able to use the wallpapers that come with the phone. I tried an app to convert photos to wallpaper but that didn't work either. Please help

 

[El Presidente]

I can't offer any advice, sorry. I am experiencing the same issue though and I've tried loads of different things to set a lock screen picture and nothing works.