This is normal for the first 24–48 hours. The device is re-indexing files and updating apps in the background. Give it a few charge cycles to stabilize.
Use this method if the screen is frozen, unresponsive, or you cannot access the Settings menu.
Before performing a hard reset, make sure to:
Device will restart with factory settings. First boot may take 3–5 minutes.
For most freezes and glitches, start with a soft reset. Only escalate to a hard reset when absolutely necessary. And if you’re preparing to sell or give away your device, a factory reset is the best way to ensure your privacy.