ZTE Z988 LTE/WCDMA/GSM(GPRS) Multi-Mode Digital Mobile Phone User Manual ZTE T81

ZTE Corporation LTE/WCDMA/GSM(GPRS) Multi-Mode Digital Mobile Phone ZTE T81

Contents

Users Manual

1
Z988
User Manual
2
LEGAL INFORMATION
Copyright © 2016 ZTE CORPORATION
All rights reserved.
No part of this publication may be quoted, reproduced,
translated or used in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without
the prior written permission of ZTE Corporation.
Notice
ZTE Corporation reserves the right to make modifications on
print errors or update specifications in this guide without prior
notice.
We offer self-service for our smart terminal device users.
Please visit the ZTE official website (at www.zteusa.com) for
more information on self-service and supported product
models. Information on the website takes precedence.
Disclaimer
ZTE Corporation expressly disclaims any liability for faults
and damages caused by unauthorized modifications of the
software.
Images and screenshots used in this guide may differ from
the actual product. Content in this guide may differ from the
actual product or software.
Trademarks
ZTE and the ZTE logos are trademarks of ZTE Corporation.
3
Google and Android are trademarks of Google, Inc.
LTE is a trademark of ETSI.
The Bluetooth® trademark and logos are owned by the
Bluetooth SIG, Inc. and any use of such trademarks by ZTE
Corporation is under license.
microSDXC Logo is a trademark of SD-3C, LLC.
Qualcomm® Snapdragon™ processors are products of
Qualcomm Technologies, Inc.
Qualcomm and Snapdragon are trademarks of Qualcomm
Incorporated, registered in the United States and other
countries. Used with permission.
Other trademarks and trade names are the property of their
respective owners.
Version No.: R1.0
Edition Time: January 5, 2016
4
Getting to Know Your Phone
Front camera
Proximity &
light sensor
Earpiece
camera
nano-SIM/
microSDXC
card tray
Back key
Home key
Home screen
camera
5
Volume down key
Dual-lens camera
Power key
Speaker
Charging/USB Type-C
jack
Main microphone
Headset jack
Auxiliary microphone
Flash
Volume up key
6
Power key
Press and hold to turn on or off airplane mode, power off or
restart the phone.
Press to turn off or on the screen display.
Home key
Touch to return to the home screen.
Touch and hold to open Google Search.
Back key
Touch to go to the previous screen.
Recent apps key
Touch to see recently used applications.
Volume up key
Press or hold the key to turn up the volume for media, alarm,
ringtone, or notification.
Volume down key
Press or hold the key to turn down the volume for media, alarm,
ringtone, or notification.
7
Installing the nano-SIM Card and
microSDXC Card
The nano-SIM card and the microSDXC card can be installed
or removed while the phone is turned on. You need to unmount
the microSDXC card before removing it.
WARNING!
To avoid damage to the phone, do not use any non-standard
nano-SIM card cut from a SIM card. You can get a standard
nano-SIM card from your service provider.
1. Insert the tip of the tray eject tool into the hole on the card
tray.
8
2. Pull out the card tray and place the nano-SIM card (right)
/microSDXC card (left) facing down on the tray. Gently slide
the card tray in until it clicks into place.
9
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.
WARNING!
Use only ZTE-approved chargers and cables. The use of
unapproved accessories could damage your phone or cause
the battery to explode.
1. Connect the adapter to the charging/USB Type-C jack.
10
2. Connect the charger to a standard AC power 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 the
customer service if you still cannot power on the phone after
prolonged charging.
Powering On/Off Your Phone
Press and hold the Power key to turn on your phone.
To turn it off, press and hold the Power key to open the
options menu. Then touch Power off > OK.
Setting Up for the First Time
When you first power on your phone after you purchase it or
reset it to factory settings, you need to do some settings before
using it.
1. Touch the language field to select the language.
2. Touch .
11
3. Follow the prompts to Select Wi-Fi, set Date & time, type
your Name, set screen lock to protect your phone, set
notification settings, and check Google services.
Running Applications
1. Touch the Home key if the current screen is not the
home screen.
12
2. Touch to check the applications.
3. To run an application on your phone, slide left or right on
the screen to find the application you needed, and then
touch the application icon.
13
Sharing your phone
You can share your phone with other people by creating
additional user accounts. Each user with a separate
account has his/her own storage space, wallpaper, screen
lock and so on. Users can also adjust device settings like
Wi-Fi that affect everyone and update apps for all other
users.
Adding a New User
By default, a Guest account is available for anyone who
needs to use your phone temporarily. You can create three
more user accounts.
1. When the phone’s current user is the owner, slide down the
status bar.
2. Double touch .
3. Touch to add user .
4. Touch OK.
Removing a User
1. When the phone’s current user is the owner, slide down the
status bar.
2. Double touch .
3. Touch MORE SETTINGS.
14
4. Touch next to an account.
5. Touch Remove user.
6. Touch DELETE.
NOTE:
When a guest user is finished using your phone, he/she
can touch Remove guest in the User menu to delete all
his/her data from your phone.
Switching Between Different Users
When the phone’s current user is the owner, touch the New
user/Guest icon in User menu to switch the phone to the
corresponding home screen of the user/guest.
When the phone’s current user is a user or guest, touch the
Owner icon in User menu to switch the phone to the
owner’s home screen.
15
Customizing Home Screens
You can customize your home screens by adding application
shortcuts, folders, widgets, and more.
Adding Shortcuts and Widgets
1. Touch the Home key > .
- or -
To add widgets, touch and hold an empty area of the home
screen and select Widgets.
2. Slide left or right to browse the available applications or
widgets.
3. Touch and hold a widget or an application icon and drag it to
a home screen panel. If necessary, drag the shortcut to the
left or right to select other home screen panels.
Removing Shortcuts or Widgets
1. Touch and hold a widget or shortcut on the home screen.
2. Drag it to (Remove) to remove it.
Organizing Icons With a Folder
1. Touch and hold a shortcut on the home screen.
16
2. Drag the shortcut to (Folder) to create a new folder. Or
drag the shortcut to an existing folder to add the shortcut into
the folder.
3. If needed, drag more shortcuts and drop them into the folder.
NOTES:
Touch the folder and then touch the name field to rename the
folder.
Drag the folder to (Extract) to move the app shortcuts in
the folder to the last home screen and delete the folder.
Applying New Wallpaper and Theme
1. Touch and hold an empty place on the home screen, and
then touch Wallpapers or Themes.
2. Touch a wallpaper or a theme you desired to use it. While
choosing wallpaper, you can touch LIVE WALL PAPER to
select an animation or touch GALLERY to select from your
own pictures or photos.
Setting the Home Screen Transition
Effect
1. Touch and hold an empty place on the home screen and
touch Effects.
17
2. Touch an effect to see it in action.
3. Touch the effect you like and then touch the Back key.
Checking the Phone Status
The status bar at the top of the screen displays phone and
service status with various icons on the right side. Below are
some of the icons and their meanings.
3G connected
No signal
4G LTE connected
Signal strength
Silent mode
Airplane mode
Vibration mode
Bluetooth on
Priority mode
Connected to a Wi-Fi® network
Battery low
Wi-Fi in use
Battery full
Speaker on
/
Battery charging
Phone microphone off
Alarm set
GPS on
18
Managing Notifications
The status bar at the top of the screen provides notification alerts
with different icons on the left side. Below are some of the icons
and their meanings.
The notifications depend on the apps installed and you can touch
and drag the status bar down to see more information.
New SMS
Upcoming event
New MMS
New Wi-Fi network detected
New message(s)
from the Email app
Downloading data
/
New message(s)
from the Gmail app
Sending data
Missed call
Updates available
Call in progress
USB connected
/
Song playing
Wired headset connected
19
Calling and Voicemail
Making a Call
1. Touch the Home key > .
2. Touch and enter the phone number or the contact
name with the dialpad. The phone will display matching
information from your contact list.
3. Touch the matching contact to call the contact or touch
to call the number.
20
Checking Voicemail
1. Touch the Home key > > .
2. Touch and hold the 1 key on the dialpad. If prompted, enter
your voicemail password.
3. Follow the voice prompts to listen to and manage your
voicemail messages.
Address Book
Creating a New Contact
1. Touch the Home key > and touch the CONTACTS tab.
2. Touch to add a new contact.
3. If you have multiple accounts associated with your phone,
touch the field above Name and select an account.
4. Enter the contact name, phone numbers, email addresses,
and other information.
21
5. Touch to save the contact.
Importing Contacts in Batches
1. Touch the Home key > .
2. Touch > Import/Export > Import from storage.
3. Select an account in which to save the contacts.
4. If prompted, choose to import one, multiple, or all vCard files.
5. If prompted, touch OK.
22
Sending a Message
1. Touch the Home key > > .
2. Enter the recipient(s) and message text. If you want to send
a multimedia message, touch to add attachments.
3. Touch or > Send.
23
Playing Music
1. Touch the Home key > > .
2. Touch All Songs and find the song you want to play.
3. Touch the song to play it. Touch the bar at the bottom to
open the playback screen.
24
Number
Function
1
Return to the music library.
2
Album artwork.
3
Check the track information.
4
Turn on or off shuffle.
25
5
Playback control: Skip songs or pause and resume
playback. Drag the progress bar to jump to any part
of the track.
6
Toggle repeat mode: sequential (no repeat), repeat
the current track, or repeat the current playlist.
7
Broadcasting progress bar.
8
Add the current track to Favorites playlist.
9
Track name, artist, and album information.
10
Switch to the current playlist or the current track.
11
Access additional options. You can trim the song, set
the song as ringtone, etc.
Connecting to the Internet
Connecting via Wi-Fi®
1. Touch the Home key > > > Wi-Fi.
2. Touch the Wi-Fi switch if Wi-Fi is off. Your phone
automatically searches for Wi-Fi networks in range and
displays their names and security settings. It also connects
to previously linked networks when they are in range.
3. Touch a network name to connect to it.
26
4. If the network is secured, enter a password or other
credentials (ask your network administrator for details) and
touch CONNECT.
Connecting via Mobile Network
1. Touch the Home key > > > Cellular networks >
Mobile Data.
2. Touch the Standard Data switch if it is turned off.
27
28
For Your Safety
General Safety
Don’t make or receive
handheld calls while
driving. Never text
while driving.
Don’t use at gas
stations.
Keep your phone at
least 10 mm away
from your ear or body
while making calls.
Your phone may
produce a bright or
flashing light.
Small parts may cause
choking.
Don’t dispose of your
phone in fire.
Your phone can
produce a loud sound.
To prevent possible
hearing damage, do
not listen at high
volume levels for long
periods.
Avoid contact with
anything magnetic.
Avoid extreme
temperatures.
29
Keep away from
pacemakers and other
electronic medical
devices.
Avoid contact with
liquids. Keep your
phone dry.
Turn off when asked to
in hospitals and
medical facilities.
Do not attempt to
disassemble your
phone.
Turn off when told to in
aircrafts and airports.
Only use approved
accessories.
Turn off when near
explosive materials or
liquids.
Don’t rely on your
phone as a primary
device for emergency
communications.
Radio Frequency (RF) Energy
This phone is designed and manufactured not to exceed the
emission limits for exposure to radio frequency (RF) energy set
by the Federal Communications Commission of the United
States.
During SAR testing, this device was set to transmit at its
highest certified power level in all tested frequency bands, and
placed in positions that simulate RF exposure in usage against
30
the head with no separation, and near the body with the
separation of 10 mm. Although the SAR is determined at the
highest certified power level, the actual SAR level of the device
while operating can be well below the maximum value. This is
because the phone is designed to operate at multiple power
levels so as to use only the power required to reach the
network. In general, the closer you are to a wireless base
station antenna, the lower the power output.
The exposure standard for wireless devices employs a unit of
measurement known as the Specific Absorption Rate, or SAR.
The SAR limit set by the FCC is 1.6 W/kg.
Tests for SAR are conducted using standard operating
positions accepted by the FCC with the device transmitting at
its highest certified power level in all tested frequency bands.
The FCC has granted an Equipment Authorization for this
model phone with all reported SAR levels evaluated as in
compliance with the FCC RF exposure guidelines. SAR
information on this model phone is on file with the FCC and can
be found under the Display Grant section of
www.fcc.gov/oet/ea/fccid after searching on FCC ID:
SRQ-Z988.
For this device, the highest reported SAR value for usage
against the head is 0.46 W/kg, for usage near the body is 1.19
W/kg.
While there may be differences between the SAR levels of
various phones and at various positions, they all meet the
31
government requirements.
SAR compliance for body-worn operation is based on a
separation distance of 10 mm between the unit and the human
body. Carry this device at least 10 mm away from your body to
ensure RF exposure level compliant or lower to the reported
level. To support body-worn operation, choose the belt clips or
holsters that do not contain metallic components to maintain a
separation of 10 mm between this device and your body.
RF exposure compliance with any body-worn accessory that
contains metal was not tested and certified, and use such
body-worn accessory should be avoided.
FCC Regulations
This mobile phone complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) This
device may not cause harmful interference, and (2) this device
must accept any interference received, including interference
that may cause undesired operation.
This mobile phone has been tested and found to comply with
the limits for a Class B digital device, pursuant to part 15 of the
FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful
interference to radio communications. However, there is no
guarantee that interference will not occur in a particular
32
installation. If this equipment does cause harmful interference
to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following
measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and
receiver.
Connect the equipment into an outlet on a circuit different
from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician
for help.
CAUTION:
Changes or modifications not expressly approved by the party
responsible for compliance could void the user’s authority to
operate the equipment.
The antenna(s) used for this transmitter must not be co-located
or operating in conjunction with any other antenna or
transmitter.
Hearing Aid Compatibility (HAC)
regulations for Mobile Phones
In 2003, the FCC adopted rules to make digital wireless
telephones compatible with hearing aids and cochlear implants.
Although analog wireless phones do not usually cause
33
interference with hearing aids or cochlear implants, digital
wireless phones sometimes do because of electromagnetic
energy emitted by the phone's antenna, backlight, or other
components. Your phone is compliant with FCC HAC
regulations (ANSI C63.19- 2011). While some wireless phones
are used near some hearing devices (hearing aids and
cochlear implants), users may detect a buzzing, humming, or
whining noise. Some hearing devices are more immune than
others to this interference noise and phones also vary in the
amount of interference they generate. The wireless telephone
industry has developed a rating system for wireless phones to
assist hearing device users in finding phones that may be
compatible with their hearing devices. Not all phones have
been rated. Phones that are rated have the rating on their box
or a label located on the box. The ratings are not guarantees.
Results will vary depending on the user's hearing device and
hearing loss. If your hearing device happens to be vulnerable
to interference, you may not be able to use a rated phone
successfully. Trying out the phone with your hearing device is
the best way to evaluate it for your personal needs.
This phone has been tested and rated for use with hearing aids
for some of the wireless technologies that it uses. However,
there may be some newer wireless technologies used in this
phone that have not been tested yet for use with hearing aids.
It is important to try the different features of this phone
thoroughly and in different locations, using your hearing aid or
cochlear implant, to determine if you hear any interfering noise.
34
Consult your service provider or the manufacturer of this phone
for information on hearing aid compatibility. If you have
questions about return or exchange policies, consult your
service provider or phone retailer.
M-Ratings: Phones rated M3 or M4 meet FCC requirements
and are likely to generate less interference to hearing devices
than phones that are not labeled. M4 is the better/higher of the
two ratings.
T-Ratings: Phones rated T3 or T4 meet FCC requirements and
are likely to be more usable with a hearing device’s telecoil (“T
Switch” or “Telephone Switch”) than unrated phones. T4 is the
better/ higher of the two ratings. (Note that not all hearing
devices have telecoils in them.)
Your phone meets the M4 /T3 level rating.
Hearing devices may also be rated. Your hearing device
manufacturer or hearing health professional may help you find
this rating. For more information about FCC Hearing Aid
Compatibility, please go to http://www.fcc.gov/cgb/dro.
Turning on the HAC Setting
To turn on the HAC function, touch the Home key > >
> Settings > Accessibility and check Hearing aids.
This section applies to T-Rating only and hearing aids that
contain telecoils. When the HAC setting is on, your phone
35
sends the audio from your phone calls to the telecoil rather
than to the microphone of your hearing aid. You are likely to
hear calls much better because volume is increased and
background noise and feedback are diminished. The HAC
setting improves only the calls you listen to through the
earpiece. It does not affect calls heard on the speaker or with a
headset. HAC requires extra battery power, so watch your
battery consumption when it's turned on.
CAUTION:
Do not turn on the HAC setting unless you use a hearing aid
with a telecoil. Using this setting without a hearing aid or with a
hearing aid without a telecoil may be harmful to your hearing.
CTIA Requirements
Do not disassemble or open crush, bend or deform, puncture
or shred.
Do not modify or remanufacture, attempt to insert foreign
objects into the battery, immerse or expose to water or other
liquids, expose to fire, explosion or other hazard.
Only use the battery for the system for which it is specified.
Only use the battery with a charging system that has been
qualified with the system per CTIA Certification Requirements
for Battery System Compliance to IEEE 1725. Use of an
unqualified battery or charger may present a risk of fire,
explosion, leakage, or other hazard.
36
Do not short circuit a battery or allow metallic conductive
objects to contact battery terminals.
Only authorized service providers shall replace battery.
Promptly dispose of used batteries in accordance with local
regulations.
Battery usage by children should be supervised.
Avoid dropping the phone or battery. If the phone or battery is
dropped, especially on a hard surface, and the user suspects
damage, take it to a service center for inspection.
Improper battery use may result in a fire, explosion or other
hazard.
The phone shall only be connected to CTIA certified adapters,
products that bear the USB-IF logo or products that have
completed the USB-IF compliance program.
Distraction
Driving
Full attention must be given to driving at all times in order to
reduce the risk of an accident. Using a phone while driving (even
with a hands free kit) can cause distraction and lead to an
accident. You must comply with local laws and regulations
restricting the use of wireless devices while driving.
37
Operating Machinery
Full attention must be given to operating the machinery in
order to reduce the risk of an accident.
Product Handling
General Statement on Handling and Use
You alone are responsible for how you use your phone and any
consequences of its use.
You must always switch off your phone wherever the use of a
phone is prohibited. Use of your phone is subject to safety
measures designed to protect users and their environment.
Always treat your phone and its accessories with care and
keep it in a clean and dust-free place.
Keep the screen and camera lens clean. Unclean screen or
camera lens may slow down the phone's reaction to your
operations or lower image quality.
Clean your phone and its accessories with a soft material
such as cleaning cloth for eyeglass lenses. Do not use
alcohol or other corrosive substances for cleaning or allow
them to get inside.
Do not expose your phone or its accessories to open flames
or lit tobacco products.
Do not expose your phone or its accessories to liquid,
38
moisture or high humidity.
Do not drop, throw or try to bend your phone or its
accessories.
Do not use harsh chemicals, cleaning solvents, or aerosols to
clean the device or its accessories.
Do not paint your phone or its accessories.
Do not attempt to disassemble your phone or its accessories,
only authorized personnel can do so.
Do not expose your phone or its accessories to extreme
temperatures, minimum 23 ℉ and maximum 122 ℉
(minimum - 5 ℃ and maximum + 50 ℃).
Do not place your phone inside or near heating equipments or
high pressure containers, such as water heaters, microwave
ovens, or hot cooking utensils. Otherwise, your phone may be
damaged.
Please check local regulations for disposal of electronic
products.
Do not carry your phone in your back pocket as it could break
when you sit down.
Small Children
Do not leave your phone and its accessories within the reach of
small children or allow them to play with it.
They could hurt themselves or others, or could accidentally
39
damage the phone.
Your phone contains small parts with sharp edges that may
cause an injury or may become detached and create a choking
hazard.
Demagnetization
To avoid the risk of demagnetization, do not allow electronic
devices or magnetic media close to your phone for a long time.
Electrostatic Discharge (ESD)
Do not touch the nano-SIM card’s metal connectors.
Antenna
Do not touch the antenna unnecessarily.
Normal Use Position
When placing or receiving a phone call, hold your phone to your
ear, with the bottom towards your mouth.
Air Bags
Do not place a phone in the area over an air bag or in the air bag
deployment area as an airbag inflates with great force and
serious injury could result.
Store the phone safely before driving your vehicle.
40
Seizures/Blackouts
The phone can produce a bright or flashing light. A small
percentage of people may be susceptible to blackouts or
seizures (even if they have never had one before) when exposed
to flashing lights or light patterns such as when playing games or
watching video. If you have experienced seizures or blackouts or
have a family history of such occurrences, please consult a
physician. To reduce the risk of blackouts or seizures, you can
use your phone in a well lit room and take frequent breaks.
Repetitive Strain Injuries
To minimize the risk of Repetitive Strain Injury (RSI) when texting
or playing games with your phone:
Do not grip the phone too tightly.
Press the buttons lightly.
Use the special features which are designed to minimize the
times of pressing buttons, such as Message Templates and
Predictive Text.
Take lots of breaks to stretch and relax.
Emergency Calls
This phone, like any wireless phone, operates using radio
signals, which cannot guarantee connection in all conditions.
Therefore, you must never rely solely on any wireless phone for
emergency communications.
41
Loud Noise
This phone is capable of producing loud noises, which may
damage your hearing. Turn down the volume before using
headphones, Bluetooth stereo headsets or other audio devices.
Phone Heating
Your phone may become warm during charging and during
normal use.
Electrical Safety
Accessories
Use only approved accessories.
Do not connect with incompatible products or accessories.
Take care not to touch or allow metal objects, such as coins or
key rings, to contact or short-circuit in the charging jack
terminals.
Never puncture the surface of the phone with sharp objects.
Connection to a Car
Seek professional advice when connecting a phone interface to
the vehicle electrical system.
42
Faulty and Damaged Products
Do not attempt to disassemble the phone or its accessory.
Only qualified personnel can service or repair the phone or its
accessory.
If your phone or its accessory has been submerged in water,
punctured, or subjected to a severe fall, do not use it until you
have taken it to be checked at an authorized service center.
Radio Frequency Interference
General Statement on Interference
Care must be taken when using the phone in close proximity to
personal medical devices, such as pacemakers and hearing
aids.
Please consult your doctor and the device manufacturer to
determine if operation of your phone may interfere with the
operation of your medical device.
Pacemakers
Pacemaker manufacturers recommend that a minimum
separation of 15 cm be maintained between a mobile phone and
a pacemaker to avoid potential interference with the pacemaker.
To achieve this, use the phone on the opposite ear to your
pacemaker and do not carry it in a breast pocket.
43
Hearing Aids
People with hearing aids or other cochlear implants may
experience interfering noises when using wireless devices or
when one is nearby.
The level of interference will depend on the type of hearing
device and the distance from the interference source,
increasing the separation between them may reduce the
interference. You may also consult your hearing aid
manufacturer to discuss alternatives.
Medical Equipment
Switch off your wireless device when requested to do so in
hospitals, clinics or health care facilities. These requests are
designed to prevent possible interference with sensitive
medical equipment.
Aircraft
Switch off your wireless device whenever you are instructed to
do so by airport or airline staff.
Consult the airline staff about the use of wireless devices on
board the aircraft and enable the airplane mode of your phone
when boarding an aircraft.
Interference in Vehicles
Please note that because of possible interference to electronic
44
equipment, some vehicle manufacturers forbid the use of
mobile phones in their vehicles unless a hands-free kit with an
external antenna is included in the installation.
Explosive Environments
Gas Stations and Explosive Atmospheres
In locations with potentially explosive atmospheres, obey all
posted signs to turn off wireless devices such as your phone or
other radio equipment.
Areas with potentially explosive atmospheres include fuelling
areas, below decks on boats, fuel or chemical transfer or
storage facilities, areas where the air contains chemicals or
particles, such as grain, dust, or metal powders.
Blasting Caps and Areas
Power off your mobile phone or wireless device when in a
blasting area or in areas posted power off “two-way radios” or
“electronic devices” to avoid interfering with blasting
operations.

Navigation menu