ZTE Z750C user manual Troubleshooting, System, Accounts

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Settings

Troubleshooting

Trusted credentials: Display trusted CA certificates.

Install from SD card: Install certificates from the memory card.

Clear credentials: Delete all certificates.

Backup and Reset

Back up my data: Back up app data, Wi-Fi passwords, and other settings to Google servers after you sign in to your Google account.

Automatic restore: Restore previously backed up settings and data when you reinstall an app.

Factory data reset: Reset your phone to factory default settings. All your personal data from the phone’s internal storage will be erased. You can also erase the data on the memory card during

the process.

System

Accessibility

Configure the system accessibility options and accessibility plug-ins on your phone, such as using TalkBack for low-vision users.

Developer Options

Developer options contains settings that are useful when developing Android applications.

About Phone

View phone status, legal information and other information. Meanwhile, you can also update your phone software through storage card updates.

To update your phone software through microSDHC card:

If you encounter problems while using the phone, or if it performs abnormally, you can refer to the chart below. If your particular problem cannot be resolved using the information in the chart, contact the dealer where you purchased the phone.

Problem

Possible Causes

Possible Solution

 

 

 

 

The network signal is too weak at your

 

 

current location, for example, in a basement

Move to a location where the network

 

or near a tall building, because wireless

signal can be properly received.

 

transmissions can not effectively reach it.

 

 

 

 

Poor reception

The network is busy at the current time

 

(for example, during peak times, there may

Avoid using the phone at such times, or try

 

 

be too much network traffic to handle

again after waiting a short time.

 

additional calls).

 

 

 

 

 

You are too far away from a base station for

You can request a service area map from

 

your service provider.

your service provider.

 

 

 

 

Poor network link quality on the part of

End the call and dial again. You may be

 

switched to a better-quality network link or

 

your service provider.

Accounts

Manage your accounts and synchronization. Tap Add account to sign in to or create accounts on your phone.

Tap an account type to see that type of accounts you have added and adjust the accounts settings.

Copy the update package to the root directory of microSDHC card. Please make sure the update package has been renamed to update.zip.

1.Press the Menu Key > System settings > About phone > System updates > Storage card updates.

2.Tap OK > Update now.

3.The system reboots and begins microSDHC upgrade.

4.When the upgrade is finished, the system will reboot with new software.

Echo or noise

 

phone line.

 

 

 

End the call and dial again. You may be

 

 

 

Poor local telephone line quality.

switched to a better-quality network link or

 

 

phone line.

 

 

 

Unable to select

Your service provider does not support

 

these features, or you have not applied for

Contact your service provider.

certain features

services that provide these features.

 

 

 

 

 

 

 

The battery or battery charger is damaged.

Contact the dealer.

 

 

 

Battery not

The phone’s temperature is below 32°F

Adjust the battery charging environment to

(0°C) or higher than 113°F (45°C).

avoid extremes of temperature.

charging

 

 

Poor contact between the battery and

Check all connectors to make sure all

 

 

charger.

connections have been properly made.

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Contents User Manual Table of Contents Table of Contents Installing the Battery and a microSDHC Card Getting StartedUsing the Touch Screen Charging the BatterySetting Up Your Phone for the First Time Switching Your Phone On/OffGetting to Know Your Phone Key FunctionsPersonalizing Changing the Screen Brightness Switching to Silent ModeApplying New Wallpapers Protecting Your Phone With Screen LocksMonitoring the Phone Status Indicator What it meansKnowing the Basics Managing NotificationsManaging Shortcuts and Widgets Organizing With FoldersRearranging the Favorites Tray Editing Text Opening and Switching AppsEntering Text Connecting to Wi-Fi Connecting to Networks and DevicesConnecting to Mobile Networks Connecting to Bluetooth DevicesConnecting to Your Computer via USB Connecting to Virtual Private NetworksAnswering or Rejecting Calls Phone CallsPlacing and Ending Calls Working With the Call LogChecking Voicemail Using Options During a CallCalling Your Contacts Managing Multi-party CallsAdjusting Your Call Settings Internet Call SettingsPeople Searching for a Contact Editing ContactsAccounts Adding a Signature to Your Emails Changing General Email SettingsWriting and Sending an Email Adding and Editing Email AccountsGmail Messaging Forwarding a Message Changing Message SettingsCalendar Deleting Messages or ThreadsGoogle Talk Google+ Browser Maps, Navigation, Local, and Latitude Google Search and Voice Search Camera Customize Camera SettingsCustomizing Camcorder Settings Capturing a PhotoWorking With Albums GalleryOpening the Gallery Working With PicturesViewing Your Music Library MusicCopying Music Files to Your Phone Playing MusicMusic Adding a Song to a Playlist Play MusicPlaying Your Music Removing a Song From a PlaylistManaging Video Files Video PlayerOpening the Video Library Playing and Controlling VideosSound Recorder More AppsPlay Books TimerFull Share Play Movies & TVSettings Play StorePersonal Wireless and NetworksDevice Accounts TroubleshootingSystem Troubleshooting For Your SafetyGeneral Safety Radio Frequency RF Energy Using Your Phone With a Hearing Aid DeviceFor Your Safety FCC ComplianceProduct Handling Turning on the HAC SettingDistraction Battery Handling & Safety Electrical SafetyRadio Frequency Interference Explosive EnvironmentsSpecifications Handset specifications are shown in the following table