Zte Blade A53+ - Using Options During a Call

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If the screen is unlocked, touch ANSWER.
NOTE:
To silence the ringer before answering the call, press either end
of the Volume key.
Reject a Call
When you receive a phone call, slide down to reject the call.
You can also touch Reply to reject the call and select a preset
text message or edit one to send to the caller.
- or -
If the screen is unlocked, touch DECLINE to reject the call. You
can also touch the caller number or name, and then touch Reply
to reject the call and select a preset text message or edit one to
send to the caller.
Using Options During a Call
During a call, you will see a number of on-screen options. Touch
an option to select it.
 Touch to turn on or off the speaker.
 Touch to mute or unmute your microphone.
 Touch to switch to the keypad when you need to enter
a code (for example, the PIN for your voicemail or bank
account) during the call.