How to restart iphone?

To restart an iPhone, press and hold the Side button and either Volume button until the power slider appears, drag slide to power off, wait 30 seconds, then hold the Side button until the Apple logo appears.3 Ways to Restart Your iPhone1.Standard Restart via Physical Buttons:Method 1 (Standard).Face ID Models (X, 11, 12, 13, 14, 15, 16, 18 & Later): Press and hold the Side button and either Volume button simultaneously until the slider appears. Drag to turn off. Once off, hold the Side button to power back on.Home Button Models (SE, 8, 7, 6s): Press and hold the Side/Top button until the power slider appears. Drag to turn off, then press and hold the Side/Top button again to turn on.2.Force Restart (If Screen Is Frozen):Method 2 (Unresponsive Device).Press and quickly release Volume Up, press and quickly release Volume Down, then press and hold the Side button until the Apple logo appears. Release the button immediately when the logo displays.3.Restart via Siri or Settings:Method 3 (Hands-Free).Siri: Say "Hey Siri, restart my iPhone" and tap Restart on the screen confirmation popup.Settings: Go to Settings > General > Shut Down, slide to power off, then turn the device back on using your Side button or charger cable.Standard Restart vs. Force RestartMethodRequires Touchscreen Input?Erases Temporary RAM Cache?Best Used ForStandard Soft RestartYes (Dragging power slider)YesGeneral glitches, slow performance, battery drainHardware Force RestartNo (Uses button keypress sequence)YesFrozen screen, unresponsive touch, black screenSettings / Siri RestartYes (Voice or tap confirmation)YesBroken or non-functional physical side buttonsWhy Restarting Fixes Common iPhone IssuesClears RAM: Flushes active memory allocation to eliminate app conflicts.Resets Network Stacks: Resolves temporary drops in Wi-Fi, Bluetooth, or Cellular signal without deleting saved credentials.Terminates Rogue Processes: Stops background tasks stuck in processing loops that cause overheating or rapid battery loss.