Zte Z557BL - Phone Crashes and Freezes Solutions

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154

Problem

Possible causes

Possible solution

Phone

crashes,

reboots,

freeze, or

cannot be

powered on

Some third-party software is

not compatible with your

phone.

Reset the phone to factory

status.

Uninstall the software that

may cause the problem.

Upgrade the phone

software.

Table of Contents

Default Chapter1
- User Manual1
- Table of Contents4
Getting Started11
- Installing the Nano-SIM Card (Included)11
- Installing the Battery and a Microsdhc™ Card (Not Included)12
- Charging the Battery13
- Extending the Battery Life14
- Powering Your Phone On/Off14
- Setting up for the First Time14
- Locking/Unlocking the Screen and Keys15
- Using the Touch Screen16
- Getting to Know Your Phone18
- Getting to Know the Home Screen20
Personalizing23
- Changing the System Language23
- Setting the Date and Time23
- Changing the Ringtone and Notification Sound24
- Turning System Sounds On/Off24
- Adjusting Volumes24
- Switching to Silent or Vibration Mode25
- Using Do Not Disturb Mode26
- Applying New Wallpapers27
- Changing Screen Brightness28
- Setting the Theme28
- Setting the Home Screen Transition Effect29
- Protecting Your Phone with Screen Locks29
- Protecting Your Phone with Encryption30
- Protecting Your Phone with Screen Pinning32
Knowing the Basics34
- Monitoring the Phone Status34
- Managing Notifications35
  - Responding to or Removing a Notification36
  - Using Quick Settings36
- Managing Apps and Widgets38
- Organizing with Folders39
- Rearranging the Primary Icons40
- Entering Text41
  - Google Keyboard42
  - Google Voice Typing44
- Editing Text45
- Opening and Switching Apps46
- Using Two Apps in Split-Screen Mode46
- Uninstalling or Disabling an App47
Connecting to Networks and Devices48
- Connecting to Mobile Networks48
- Connecting to Wi-Fi49
- Connecting to Bluetooth Devices53
- Connecting to Your Computer Via USB56
- Sharing Your Mobile Data Connection58
- Connecting to Virtual Private Networks61
Phone Calls63
- Placing and Ending Calls63
- Answering or Rejecting Calls64
- Working with the Call History65
- Calling Your Contacts67
- Checking Voicemail68
- Using Options During a Call68
- Managing Multi-Party Calls69
- Setting up a Conference Call70
- Adjusting Your Call Settings71
Contacts78
- Checking Contact Details78
- Adding a New Contact78
- Setting up Your Own Profile79
- Importing, Exporting, and Sharing Contacts79
- Working with Favorite Contacts81
- Working with Groups82
  - Deleting a Group83
  - Editing a Group83
- Searching for a Contact84
- Editing Contacts84
  - Linking Contacts85
  - Unlinking Contact Information86
Accounts87
- Adding or Removing Accounts87
- Configuring Account Sync88
Email90
- Setting up the First Email Account90
- Checking Your Emails91
- Writing and Sending an Email91
- Responding to an Email92
- Adding a Signature to Your Emails93
- Adding and Editing Email Accounts93
- Changing General Email Settings94
Messaging95
- Opening the Messaging Screen95
- Sending a Text Message95
- Replying to a Message96
- Forwarding a Message97
- Deleting Messages or Threads97
- Changing Message Settings98
Calendar99
- Viewing Your Calendars and Events99
- Creating an Event100
- Editing, Deleting or Sharing an Event101
- Changing Calendar Settings101
- Searching an Event102
Browser103
- Opening the Browser103
- Using Multiple Browser Tabs104
- Downloading Files104
- Changing Browser Settings105
Camera106
- Capturing a Photo106
- Using Manual Camera Mode108
- Using Other Camera Modes109
- Recording a Video109
- Customizing Camera and Video Settings111
Gallery113
- Opening Gallery113
- Working with Albums113
- Working with Pictures114
- Retouching Your Pictures115
- Making a GIF or a Collage116
- Playing Videos117
Music118
- Copying Music Files to Your Phone118
- Viewing Your Music Library119
- Setting a Song as the Default Ringtone120
- Playing Music120
- Managing Playlists122
Video Player124
- Opening the Video Library124
- Playing and Controlling Videos124
- Managing Video Files126
- Trimming a Video127
More Apps128
- Calculator128
- Clock128
- Downloads129
- File Manager130
- Wi-Fi Utility130
- Sound Recorder130
  - Record a Voice Memo131
  - Playing a Voice Memo131
Google Apps132
- Chrome132
- Drive132
- Duo132
- Gmail133
- Google133
- Maps133
- Photos133
- Play Movies & TV133
- Play Music133
- Play Store134
- Voice Search134
- Youtube134
Settings135
- Wireless and Networks135
- Device138
  - Call Settings142
  - Connect to Pc142
- Personal143
- Navigation Key147
- System148
- About Phone149
Upgrading the Phone Software150
Troubleshooting151
For Your Safety155
- General Safety155
- FCC RF Exposure Information (SAR)156
- FCC Regulations158
- Hearing Aid Compatibility (HAC) Regulations for Mobile Phones159
- Distraction161
- Product Handling161
- Electrical Safety166
- CTIA Requirements166
- Radio Frequency Interference168
  - Medical Devices169
  - Interference in Cars169
- Explosive Environments170
Specifications171

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