Last night (28/09/2025), I had a new update to install on my phone. I have a Samsung Flip 4, model SM-F721B.
I have come across a strange issue that has never happened before. After getting this update, my phone automatically shuts down when I take it off charge when I close the screen. I have to turn it back on again, and leave it open, otherwise it turns off completely when I close it. The charge is always at full power when I turn it back on, so it isn't the battery life.
When my phone is on charge, it stays on, and shows me the cover screen as well. No matter how many times I've tried to fix this, it keeps turning off immediately after taking it off charge and when I close my phone.
At first I thought it was some weird new gimmick to the updates, but there was nothing explaining this weird situation.
May I please have some help? I've only had this phone for about two years, and I haven't had a problem like this before.
From what you have described, it seems like there may be a hardware issue in your device.
We would recommend that you take it to an Authorised Service Centre to get further assistance with this issue. Below is a link to find your nearest Service Centre:
