Apps and features35Blocking phone numbersBlock calls from specific numbers added to your block list.Open the Phone app, tap → Settings → Block numbers, and then select contacts orphone numbers to save in the blocked numbers list.When blocked numbers try to contact you, you will not receive notifications. The callswill be logged in the call log.You can also block incoming calls from people that do not show their caller ID. Tapthe Block calls from unknown numbers switch to turn the feature on.Options during calls• Add call: Dial a second call. The first call will be put on hold. When you end thesecond call, the first call will be resumed.• Hold call: Hold a call.• Video call: Switch to a video call.• Bluetooth: Switch to a Bluetooth headset if it is connected to the device.• Speaker: Turn speakerphone off or on. When using the speakerphone, keep thedevice away from your ears.• Mute: Turn off the microphone so that the other party cannot hear you.• Keypad / Hide: Open or close the keypad.• : End the current call.• : During a video call, switch to a voice call.• : During a video call, lock the screen.• Effects: During a video call, apply various effects.• : During a video call, change the screen ratio.• Camera: During a video call, turn off the camera so that the other party cannot seeyou.• Switch: During a video call, switch between the front and rear cameras.Some features may not be available depending on the carrier or model.