Hi all-woke up this morning, opened Instagram, which froze on the loading screen. I quit the app and immediately reopened. The screen went dark and then showed the Apple “spinner” in the middle for a long time. I then force restarted the phone. It’s now been 45 mins and the phone won’t turn back on, just keeps showing the Apple logo now and again. I have a GB appt, but is there anything else to try?