ZTE Z797C user manual Troubleshooting, Problem Possible Causes Possible Solution

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Troubleshooting

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 cannot 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.

 

phone line.

Echo or noise

 

 

 

 

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.

 

 

 

 

 

 

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Troubleshooting

 

 

 

Problem

Possible Causes

Possible Solution

 

 

 

 

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.

 

 

 

 

The standby time is related to your service

 

 

provider system configuration. The same

If you are located in an area where

 

phone used with different service providers’

signaling is weak, temporarily power off

 

systems will not provide exactly the same

the phone.

 

length of standby time.

 

 

 

 

Shortened

The battery is depleted. In high temperature

Use a new battery.

standby time

environments, battery life will be shortened.

 

 

 

 

 

If you are not able to connect to the

 

 

network, the phone will continue to send

Change your location to one where the

 

out signals as it attempts to locate a base

network is accessible, or temporarily turn

 

station. Doing so consumes battery power

off your phone.

 

and will consequently shorten standby time.

 

 

 

 

Cannot turn your

Battery power has been depleted.

Recharge the phone’s battery.

phone on

 

 

 

 

 

 

You are not within the network’s service

Check the service area with your service

Unable to connect

area.

provider.

 

 

to the network

Poor signal.

Move to an open space, or if you are inside

 

 

a building, move closer to a window.

 

 

 

 

 

 

You have entered an incorrect PIN code

Contact your service provider. If the service

PIN Code blocked

provider provides the SIM card’s PUK code,

three consecutive times.

 

use the PUK code to unlock the SIM card.

 

 

 

 

 

 

 

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Contents Z797C Table of Contents Table of Contents Installing a microSDXC Card Charging the BatteryGetting Started Remove the back coverExtending the Battery Life Powering Your Phone On/OffSetting Up Your Phone for the First Time Using the Touch ScreenGetting to Know Your Phone Key FunctionsPersonalizing Applying New Wallpapers Changing the Screen BrightnessProtecting Your Phone With Screen Locks Protecting Your Phone With EncryptionKnowing the Basics Monitoring the Phone StatusManaging Notifications Knowing the BasicsManaging Widgets Apps Organizing With FoldersChanging Input Methods Rearranging the Favorites TrayEntering Text Connecting to Networks and Devices Opening and Switching AppsConnecting to Mobile Networks Connecting to Wi-FiConnecting to Bluetooth Devices Connecting to Your Computer via USB Phone Calls Using Options During a Call Switching Between Two Calls Adjusting Your Call SettingsChecking Voicemail Calling Your ContactsSetting Speed Dials Phone Calls Enabling/Disabling Phone Dial Pad SoundEditing Quick Response to Rejected Callers Turning on Hearing Aid CompatibilityPeople Searching for a Contact Editing ContactsAccounts Changing General Email Settings Writing and Sending an EmailAdding a Signature to Your Emails Adding and Editing Email AccountsGmail Messaging Changing Message Settings CalendarDeleting Messages or Threads Viewing Your Calendars and EventsChanging Calendar Settings Google+Creating an Event Editing or Deleting an EventBrowser Google Maps Google Now and Search Customizing Camera Settings SettingsCamera Capturing a PhotoGallery Opening the GalleryWorking With Pictures Working With AlbumsMusic Copying Music Files to Your PhoneViewing Your Music Library Playing MusicPlay Music Playing Your MusicMusic Removing a Song From a Playlist Deleting or Renaming a PlaylistVideo Player Opening the Video LibraryPlaying and Controlling Videos Managing Video FilesSound Recorder More AppsMi-EasyAccess DownloadsFile Manager Full SharePlay Store General Settings SettingsViewing Your Downloaded Apps Device Wireless and NetworksPersonal Accounts Upgrading the Phone SoftwareSystem Troubleshooting TroubleshootingProblem Possible Causes Possible Solution For Your Safety General SafetyFor Your Safety Radio Frequency RF EnergyHearing Aid Compatibility HAC Regulations for Mobile Phones FCC ComplianceDistraction Product HandlingCtia Requirements Electrical SafetyRadio Frequency Interference Specifications For Your Safety Interference in CarsExplosive Environments Gas Stations and Explosive Atmospheres