I don't think I have any corrupt apps (every app I have on this device I've had on another device at one point and it worked fine), nor a corrupt SD card. I opened up an app called 'Regrann' so I could repost an Instagram video my sister uploaded, then my phone shut down. I turned it back on, and now I can't touch the lockscreen. At all. I can touch it, but it's completely unresponsive. I can't restart it when it's like this, I don't think. It's too late and night and I can't ask for help (it only ever happens late at night?). Could anyone help? I'm freaking out because I need to use it in the morning.
Read more: Samsung Galaxy J1 Lockscreen frozen?