ZTE Z6400C Users Manual

ZTE Blade™ X2 Max

User Guide

1

Some of the contents in this manual may differ from
your phone depending on the software of the phone.
Actual color may vary.

Your phone is designed to make it easy for you to
access a wide variety of content. For your protection,
we want you to be aware that some applications that
you enable may involve the location of your phone
being shared. For applications available through
Cricket, we offer privacy controls that let you decide
how an application may use the location of your phone
and other phones on your account. However, the
Cricket privacy tools do not apply to applications
available outside of Cricket. Please review the terms
and conditions and the associated privacy policy for
each location-based service to learn how location
information will be used and protected. In addition,
your Cricket phone may be used to access the
Internet and to download and/or purchase goods,
applications, and services from Cricket or elsewhere
from third parties. Cricket provides tools for you to
control access to the Internet and certain Internet
content. These controls may not be available for
certain devices which bypass Cricket controls.

© 2018 Cricket Wireless LLC. All rights reserved.
Cricket and the Cricket logo are registered trademarks
under license to Cricket Wireless LLC.

Android is a trademark of Google LLC; Oreo is a
trademark of Mondelez International, Inc. group.The

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microSDXC™ logo is a trademark of SD-3C, LLC.

Manufactured under license from Dolby
Laboratories. Dolby, Dolby Audio, and the
double-D symbol are trademarks of Dolby
Laboratories.

Qualcomm and Snapdragon are trademarks of
Qualcomm Incorporated, registered in the United
States and other countries. Used with permission.
Other marks are the property of their respective
owners.

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Contents

Getting started ....................................................... 12

Installing the nano-SIM card/microSDXC™ card .............. 12

Charging the battery ........................................................ 14

Extending the battery life ................................................. 16

Powering your phone on/off ............................................. 17

Setting up your phone for the first time ............................. 17

Locking/Unlocking the screen and keys ........................... 18

Using the touch screen .................................................... 19

Getting to know your phone ............................................. 21

Key functions ................................................................... 23

Getting to know the home screen ..................................... 24

Extending thehome screen .............................................. 25

Personalizing.......................................................... 27

Changing the system language ........................................ 27

Setting the date and time ................................................. 27

Changing the ringtone and notification sound ................... 28

Turning system sounds on/off .......................................... 29

Adjusting volumes............................................................ 29

Switching to silent or vibration mode ................................ 30

Using Do Not Disturb mode ............................................. 30

Applying new wallpapers ................................................. 33

Changing the screen brightness ....................................... 33

Setting the theme ............................................................ 34

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Setting the home screen transition effect .......................... 34

Protecting your phone with screen locks ........................... 34

Using your fingerprint ....................................................... 36

Protecting your phone with screen pinning ....................... 38

Knowing the basics ............................................... 40

Monitoring the phone status ............................................. 40

Managing notifications...................................................... 41

Managing shortcuts and widgets ...................................... 45

Organizing with folders ..................................................... 48

Rearranging the primary shortcuts .................................... 48

Entering text ..................................................................... 49

Gboard (Google keyboard) ............................................... 50

Google voice typing .......................................................... 53

Editing text ....................................................................... 53

Opening and switching apps ............................................ 55

Using two apps in split-screen mode ................................ 56

Uninstalling or disabling an app ........................................ 57

Connecting to networks and devices .................. 59

Connecting to mobile networks ......................................... 59

Connecting to Wi-Fi .......................................................... 62

Using Wi-Fi Direct ............................................................ 66

Connecting to Bluetoothdevices ....................................... 67

Connecting to your computer via USB .............................. 71

Using the microSDXC card as portable or internalstorage 72

Using USB On-The-Go (OTG) .......................................... 76

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Sharing your mobile data connection ............................... 77

Connecting to virtual private networks .............................. 80

Phone calls ............................................................. 83

Placing and ending calls .................................................. 83

Answering or rejecting calls ............................................. 84

Working with the call history ............................................. 86

Calling your contacts ....................................................... 88

Checking voicemail .......................................................... 89

Using options during a call ............................................... 89

Managing multi-party calls ............................................... 90

Adjusting your call settings ............................................... 92

Contacts ............................................................... 100

Checking contact details ................................................ 100

Adding a new contact .................................................... 100

Setting up your own profile ............................................. 101

Importing, exporting, and sharing contacts ..................... 101

Working with favorite contacts ........................................ 103

Searching for a contact .................................................. 104

Editing contacts ............................................................. 105

Accounts .............................................................. 107

Adding or removing accounts ......................................... 107

Configuring account sync ............................................... 108

Email ..................................................................... 110

Setting up the first email account ................................... 110

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Checking your email ....................................................... 111

Writing and sending an email ......................................... 111

Responding to an email .................................................. 112

Adding and editing email accounts ................................. 114

Changing general email settings .................................... 115

Messaging ............................................................ 116

Opening the messaging screen ...................................... 116

Sending a text message ................................................. 116

Adding an attachment .................................................... 118

Replying to a message ................................................... 120

Forwarding a message ................................................... 120

Deleting messages or threads ........................................ 121

Changing message settings ........................................... 121

Calendar ............................................................... 122

Viewing your calendars and events ................................ 122

Creating an event ........................................................... 123

Editing, deleting or sharing an event ............................... 124

Changing calendar settings ............................................ 125

Searching an event ........................................................ 125

Browser ................................................................ 126

Opening the browser ...................................................... 126

Setting the home page ................................................... 126

Using multiple browser windows ..................................... 127

Downloading files ........................................................... 128

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Changing browser settings ............................................. 128

Camera .................................................................. 129

Capturing a photo .......................................................... 129

Using PORTRAIT mode ................................................. 132

Using BOKEHmode ....................................................... 132

Using other camera modes ............................................ 133

Recording a video .......................................................... 134

Customizing camera and video settings ......................... 135

Gallery ................................................................... 138

Opening the Gallery app ................................................ 138

Working with albums ...................................................... 138

Working with pictures ..................................................... 139

Retouching your pictures ............................................... 141

Making a GIF or a collage .............................................. 143

Playing videos ............................................................... 144

Music ..................................................................... 145

Viewing your music library ............................................. 145

Setting a song as the default ringtone ............................ 146

Playing music ................................................................ 146

Managing playlists ......................................................... 149

Video ..................................................................... 150

Opening the video library ............................................... 150

Playing and controlling videos ........................................ 150

Managing video files ...................................................... 153

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NextRadio ............................................................. 154

Scanning and saving channels ....................................... 154

Listening to Next Radio .................................................. 154

Editing a saved channel ................................................. 155

Turning off Next Radio.................................................... 156

Setting your radio region ................................................ 156

Voice Recorder ..................................................... 157

Recording a voice memo ................................................ 157

Playing a voice memo .................................................... 157

Playing and managing memos ....................................... 157

More apps ............................................................. 159

Calculator ...................................................................... 159

Clock ............................................................................. 159

Dolby Audio.................................................................... 160

Downloads ..................................................................... 161

File Manager .................................................................. 161

Google Apps .................................................................. 163

Sharecare ...................................................................... 164

Z-Assistant ..................................................................... 165

Z-Backup ....................................................................... 166

Settings ................................................................ 167

Network& Internet .......................................................... 167

Connected devices......................................................... 170

Apps & notifications ........................................................ 171

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Battery ........................................................................... 174

Featured ........................................................................ 174

Display .......................................................................... 176

Sound ............................................................................ 177

Storage.......................................................................... 178

Security & Location ........................................................ 178

Accounts ....................................................................... 182

Accessibility ................................................................... 183

Google .......................................................................... 183

System .......................................................................... 184

Upgrading the phone software ........................... 187

Troubleshooting ................................................... 188

Health and safety information............................. 195

General safety ............................................................... 195

Radio frequency (RF) energy ......................................... 197

FCC regulations ............................................................. 199

Hearing aid compatibility (HAC) regulations for mobile

phones .......................................................................... 200

CTIA requirements ......................................................... 203

Distractions.................................................................... 205

Product handling ............................................................ 205

Electrical safety ............................................................. 210

Radio frequency interference ......................................... 211

Explosive environments ................................................. 213

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Warranty ............................................................... 215

Consumer limited warranty ............................................. 216

How to get warranty service ........................................... 221

Other warranty programs ............................................... 221

Specifications ...................................................... 222

11

Getting started

Installing the nano-SIM
card/microSDXC™ card

The nano-SIM card and the microSDXC card (sold
separately) can be installed or removed while the
phone is turned on. You need to unmount the
microSDXC card before removing it. (See Connecting

to networks and devices – Using the microSDXC card
as portable or internalstorage.)

Note: Your phone will come with the nano-SIM card
already installed.

Warning! To avoid damage to the phone, do not use
any other kind of SIM card or any nonstandard
nano-SIM card cut from a SIM card. You can get a
standard nano-SIM card from your service provider.

Insert the tray eject tool into the hole on the

1.

nano-SIM/microSDXC card tray, and pull the tray
out.

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2.

Place the nano-SIM card and microSDXC card on
the tray with the gold-colored contacts facing down.

3.

Carefully slide the tray back into place.

13

Charging the battery

Your phone’s battery should have enough power for
the phone to turn on, find a signal, and make a few
calls. You should fully charge the battery as soon as
possible.

If the battery is low, there will be a pop-up message on
the screen. As you charge your phone, the screen will
tell you the exact battery level each time you wake up
your phone.

Warnings!



Use only ZTE-approved chargers and USB
Type-C™ cables. The use of unapproved
accessories could damage your phone or cause
the battery to explode.



Do not remove the back cover. The battery is not
removable. Removal may cause fire or explosion.

Do not change the built-in rechargeable battery in



your phone by yourself. The battery can only be
changed by ZTE or a ZTE authorized service
provider.

Note:Use the USB Type-C charger that comes in-box
with your phone to charge the battery. It’s specially
built to support Qualcomm® Quick Charge™ 2.0.

1.

Connect the adapter to the charging/USB Type-C

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port.

2.

Connect the charger to a standard AC wall outlet. If
the phone is on, you’ll see a charging icon, such as

or , appear in the Status Bar.

3.

Disconnect the charger when the battery is fully
charged.

Note: If the battery is extremely low, you may be
unable to power on the phone even when it is being
charged. In this case, try again after charging the
phone for at least 20 minutes. Contact customer
service if you still cannot power on the phone after
prolonged charging.

15

This device contains a nonremovable battery.
Attempting to remove will void your warranty and
could cause serious injury. Do not damage, alter,
or try to remove the battery.

Extending the battery life

Active applications, screen brightness levels,
Bluetooth and Wi-Fi usage, and GPS functionality can
drain your battery. You can follow these helpful tips to
conserve your battery power.

Use the Battery saver feature. (See Settings –



Battery.)



Reduce the screen backlight time.
Lower the screen brightness.




Turn auto-sync, Wi-Fi, and Bluetooth off when not
in use.



Disable the GPS function when not in use. Most
applications using this function will periodically
query the GPS satellites for your current location;
each query drains your battery.

16

Powering your phone on/off



Press and hold the Power key to power on your
phone.

To turn it off, press and hold the Power keyto open



the options menu. TapPower off.

Note: If the phone freezes or takes too long to
respond, press and hold the Power key for about 10
seconds to restart the phone.

Setting up your phone for the
first time

When you first power on your phone after you
purchase it or reset it to factory settings (see Settings
– System – Reset), you may need to set it up before
using it.

1.

Tap the language field to select the language you
want, and tap LET’S GO.

2.

Follow the prompts to set up your Wi-Fi connection,
Google services, name, device protection, and
other options.

Note: Users with low vision can tap Vision Settings
on the initial setup screen to customize accessibility
features.

17

Locking/Unlocking the screen
and keys

Your phone allows you to quickly lock the screen and
keys (put the phone into Sleep mode) when not in use
and also to turn the screen back on and unlock it when
you need it.

To lock the screen and keys:

To quickly turn the screen off and lock the keys, press
the Power key.

Note: To save battery power, the phone automatically
turns off the screen after a certain period of time when
you leave it idle. You will still be able to receive
messages and calls while the phone screen is off.

To unlock the screen and keys:

1.

Press the Power key to turn the screen on.

2.

Swipe up from the bottom of the screen to unlock
the phone, or

Press and hold and slide toward the center of



the screen to make a call.

Press and hold and slide toward the center of



the screen to open the front-facing camera.



Double-tap a notification to open the related app.

Note: If you have set a fingerprint, pattern, PIN, or

18

password for your phone (see Personalizing –

Protecting your phone with screen locks andUsing
your fingerprint), you’ll need to press your finger

against the Fingerprint sensor, draw the pattern, or
enter the PIN/password to unlock your screen.

Using the touch screen

Your phone’s touch screen lets you control actions
through a variety of touch gestures.



Tap – When you want to type using the on-screen
keyboard, select on-screen items (such as
application and settings icons), or press on-screen
buttons, simply tap them with your finger.

Press and hold – To open the available options for



an item (for example, a message or a link in a web
page), press and hold the item. To quickly access
shortcut menus for certain apps, press and hold the
app icon and select from the options.



Swipe or slide – To swipe or slide means to
quickly drag your finger vertically or horizontally
across the screen.



Drag – To drag, press and hold your finger with
some pressure before you start to move your finger.
While dragging, do not release your finger until you
have reached the target position.

Pinch – In some apps (such as Maps, Chrome™,



19

and Gallery), you can zoom in and out by placing
two fingers on the screen at once and pinching
them together (to zoom out) or spreading them
apart (to zoom in).

Rotate the screen – For most screens, you can



automatically change the screen orientation from
portrait to landscape by turning the phone
sideways.

Notes:



The auto-rotate feature needs to be enabled for

the screen orientation to automatically change.
From the home screen, tap the Arrow >

Settings> Display >Advanced > Device
rotation> Rotate the contents of the screen.



You can also access the screen rotation control

by sliding down the Status Bar twice and tapping
Auto-rotate or Portrait.

20

FPO

Getting to know your phone

21

FPO

*You can switch the positions of the Back key and
Recent apps key. From the home screen, tap the
Arrow > Settings >Featured >Navigation keys,
and select an option.

Flash

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Dual-lens camera

Fingerprint sensor

Key

Function

Press and hold to turn Airplane mode on

Press to return to the home screen from

Assistant.

Press to see recently used applications.

application.

Key functions

Power key

Homekey

Recent
apps key

Back key Press to go to the previous screen.

Volume
keys

or off, restart, or power off.
Press to turn the screen display on or

off.

any application or screen.
Press and hold to access Google

Double-tap to switch to the most recent

Press or hold to turn the volume up or
down.

23

Getting to know the home
screen

The home screen is the starting point for your phone’s
applications, functions, and menus. You can
customize your home screen by adding shortcuts,
folders, widgets, and more.

Status and
notification
bar

Widgets

Folder

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Shortcut

Arrow

Primary
shortcuts

Extending thehome screen

Your home screen is extendable, providing more
space for shortcuts, widgets, and more. Simply swipe
left or right on the home screen to see the extended
panels. You can add or remove panels or adjust their
order.

Adding a new home screen panel

1.

Press and hold an empty area of the home screen.

2.

Slide the home screen thumbnails left or right and
tap .

Deleting a home screen panel

Press and hold an empty area of the home screen.

1.

2.

Swipe left or right to view the home screen
thumbnails. Tap on the top right corner of a
thumbnail.

3.

If the panel is not empty, tap OK to confirm. The
items on the panel will also be removed.

Note:There must be at least one home screen panel.

Moving a home screen panel

1. Press and hold an empty area of the home screen.

2. Swipe left or right to view the home screen

25

thumbnails. Press and hold a thumbnail and drag it
left or right to the place you need.

Note:Tap at the top of a home screen thumbnail
to set it as the main home screen.

26

Personalizing

Changing the system language

1. From the home screen, tap the Arrow >
Settings > System > Languages& input >
Languages. The first language in the list is the

default system language.

2. If the language you need is not shown in the list,
tapAdd a language and select the one you want.

3. Press and hold next to the language you want
to use, and drag it to the top of the list.

Note: To remove languages from the list, tap >
Remove, select the languages you want to delete,

and then tap >OK.

Setting the date and time

1. From the home screen, tap the Arrow >
Settings >System >Date & time.

2. Set the date, time, time zone, and time format.



To adjust the date and time automatically, tap to
enable Automatic date & time.

To adjust the date and time manually, tap to



27

disable Automatic date & time and tap Set
date / Set time.



To adjust the time zone automatically, tap to
enable Automatic time zone.



To adjust the time zone manually, tap to
disableAutomatic time zone and tap Select
time zone.

To adjust the time format, tap to enable or



disableUse 24-hour format.

Changing the ringtone and
notification sound

You can customize the default ringtone for incoming
calls and the default notification sound.

1. From the home screen, tap the Arrow >
Settings > Sound> Advanced > Ringtones.

2. TapRingtones or Default notificationsound.

3. Scroll through the list, and select the ringtone you’d
like to use.

4. TapOK.

Notes:

Many applications have their own notification



sound settings.



See Contacts – Editing contacts – Setting a
ringtone for a contact for how to assign a special

28

ringtone to an individual contact.
When selecting a ringtone or notification sound,



swipe to the bottom of the list and tap Add
ringtone to add an audio file saved on the phone
or microSDXC card to the list of options.

Turning system sounds on/off

1. From the home screen, tap the Arrow >
Settings > Sound >Advanced.

2. Inthe Other sounds and vibrations section, tap
the switch beside each option to turn it on or off.

Adjusting volumes

1. From the home screen, tap the Arrow >

Settings > Sound.

2. Drag the sliders below Ring volume, Notification

volume, Media volume, and Alarm volume to

adjust the volume for each type of audio.

Note: You can adjust the media volume when a media
application is in use by pressing either of the Volume
keys. If no media application is active, press either of
the Volume keys to adjust the ringtone volume (or the
earpiece volume during a call).

29

Switching to silent or vibration
mode

You can set the phone to silent or vibration mode by
using one of the following methods.

Press one of the Volume keyswhen no media



application is active to show the volume
management window. Drag the ringtone volume
slider to the leftor press and hold the Volume
down keyto switch the phone to vibration mode.
Press the Volume down key again in vibration
mode to switch the phone to silent mode.



From the home screen, tap the Arrow

>Settings > Sound >Advanced>Notification

mode and select Vibrate or Mute to switch to

vibration or silent mode.

Note: Refer to Using Do Not Disturb mode below for
another method.

Using Do Not Disturb mode

You can limit interruptions with Do Not Disturb mode.
This mode silences your phone so that it doesn’t make
sounds or vibrate when you don’t want it to.

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