Lenovo TAB4 10
User Guide
Lenovo TB-X304F
Lenovo TB-X304L
All information labeled with * in this guide refers only to the WLAN+LTE model (Lenovo
TB-X304L).
Basics
Before using this information and the product it supports, be sure to read the following:
Safety, Warranty & Quick Start Guide
Regulatory Notice
“Important safety and handling information” in "Appendix".
The Safety, Warranty & Quick Start Guide and the Regulatory Notice are available on the website at
http://support.lenovo.com.
Note：All pictures and illustrations in this document are for your reference only and may differ
from the final product.
Lenovo Companion
Looking for help? The Lenovo Companion app can offer you support for getting direct access to
Lenovo's web assistance and forums*, frequent Q&A*, system upgrades*, hardware function tests,
warranty status checks*, service requests**, and repair status**.
Note:
* requires data network access.
** is not available in all countries.
You have two ways to get this app:
Search for and download the app from Google Play.
Scan the following QR code with a Lenovo Android device.
Technical specifications
Model Lenovo TB-X304F Lenovo TB-X304L
CPU Qualcomm APQ8017 Qualcomm MSM8917
Battery 7000mAh 7000mAh
Wireless
communication
Bluetooth; WLAN 2.4G 802.11 b/g/n;
GPS+GLONASS;
Bluetooth; WLAN 2.4G 802.11 b/g/n;
GPS+GLONASS;
TDD LTE/FDD LTE/UMTS/GSM
Note: Lenovo TB-X304L supports LTE Bands 1,2,3,4,5,7,8,20,38,40,but in some countries LTE is
not supported. To know if your device works with LTE networks in your country, contact your
carrier.
Home screen
The home screen is the starting point for using your device. For your convenience, the home screen
is already set up with some useful apps and widgets.
Note: Your device's features and the home screen may be different depending on your
location, language, carrier, and device model.
You can customize your home screen at any time.
Home screen
On the first home screen, there is a Google Search bar and some useful apps.
Preview screen
Press and hold anywhere on the home screen except for the icons.
At the bottom of the screen are WALLPAPERS and WIDGETS.
Add a widget to a home screen
Tap
at the bottom of the preview screen, press and hold the widget you want to add, then drag
it to where you want to place it and release.
Change the wallpapers
Press and hold anywhere on the home screen except the icons, select WALLPAPERS at the
bottom of the screen, and then choose your preferred wallpaper.
Go to
> Settings > Display > Wallpaper and choose your preferred wallpaper.
Move an app to another screen
Press and hold an app that you want to move, drag it to where you want to place it, then release.
Uninstall an app
1.Tap
, press and hold the app that you want to uninstall.
2.Drag to
, and then release and tap OK.
Note: Some system apps cannot be uninstalled.
Screen buttons
There are three buttons at the bottom of the screen.
Back button: Tap to return to the previous page.
Home button: Tap to return to the default home screen.
Recent button: Tap to view recent apps. Then you can do the following:
Tap an app to open it.
Swipe an app window right or left to close it.
Tap to lock the app or tap to unlock it.
Tap to stop running the app.
Tap to stop running all the apps.
Notifications and Quick Settings
The Notifications panel informs you of new messages, USB connection, and activities in progress
such as file downloading. The Quick Settings panel allows you to access frequently-used settings
such as the WLAN switch.
You can do any of the following:
To see notifications, swipe down from the top of the screen.
To close the Notifications panel, swipe up from the bottom of the screen.
To dismiss a notification, swipe left or right across the notification.
To dismiss all notifications, tap CLEAR ALL at the bottom of the Notifications panel.
To open the Quick Settings panel, swipe down from the top of the screen twice.
To close the Quick Settings panel, swipe up from the bottom of the screen.
Force shutdown/reboot
Press and hold the On/Off button for about 8 seconds until the device turns off, press and hold the
On/Off button for about 10 seconds to reboot.
Productivity Interface
Using Productivity Interface
To switch to the Productivity Interface, tap > Productivity Interface.
Go to > Settings > Productivity Interface to turn it on.
Navigation bar
Recent app icons are displayed in the navigation bar, you can do any of the following:
To open an app, tap its icon.
When the app icons can not be completely displayed in the app list, will appear at the side of
the navigation bar. To see the hidden icons, slide left or right.
To adjust the order of the icons in the navigation bar, press and hold an app icon until it enlarges
slightly, drag it to where you want to place it then release.
To close an app, press and hold an app until its icon enlarges slightly, drag it upwards then
release.
Using split screen mode
Method 1
1. Open one app then tap
.
2. Press and hold the first app, drag it to the left or right side until “Drag here to use split
screen” appears, then release.This app will be locked.
3. Tap
, choose the second app you want to open, then two apps will be displayed on the
screen.
Method 2
1. Open one app then press and hold . The first app will be locked on the left side of the
screen.
2. Tap
, choose the second app you want to open. Then two apps will be displayed on the
screen.
Note: Not all applications support split screen mode.
Split screen mode
In split screen mode, you can do any of the followings:
Replace the second app
Tap
to choose other apps or tap app icons in the navigation bar.
Close the first app
Press and hold the app icon in the navigation bar until it enlarges slightly, drag it upwards then
release.
Adjust the split screen size
Slide the “
” in the middle of the two screen leftwards or rightward.
Exiting split screen mode
In any of the below conditions, you will exit split screen mode.
When any app that doesn’t support split screen mode is chosen.
In split screen mode, press and hold to enter into full screen mode.
When all apps in navigation bar are closed.
Multi-users
Multi-users
There are three user types:
Owner: An owner has full control over all user permissions and manages all user accounts.
Guest: There is only one Guest account. A Guest has restricted access to the device. For
instance, a Guest can't open Unknown sources.
New User: There can be multiple user accounts, including general user and child. A general user
can manage kid's account. In Kid's account, there are many child-friendly APPs available,
including videos, games, music and so on. All the contents can be managed in Parental Control.
Creating new user accounts
Tap > Settings > Users > ADD USER to creat user accounts.
Tap > CONTINUE to creat a general user account.
Tap > CONTINUE to creat a kid's account. Or tap on the first home screen, then tap
Lenovo Kid's Account to creat a kid's account.
Note：Before you add a kid's account，you need to set up a screen lock to protect your
apps and personal data.
Switching between user accounts
On the home screen, swipe down from the top of the screen, and then tap user photos to switch
between different user accounts.
On the lock screen interface, tap and swipe up to switch to different user account.
Deleting an user account
Tap > Settings > Users, and tap the icon located beside the account you would like to
delete, then tap DELETE USER > DELETE.
Camera
To open the Camera app, go to Camera.
Taking photos and videos
You can take photos and record videos with your device's built-in camera.
Tap to take a photo.
Tap to record a video.
Tap to convert to panorama mode.
Tap / to switch between the front and the rear camera.
Tap / to enable or disable HDR.
Tap to configure other camera settings.
Taking screenshots
Press and hold the On/Off button and the Volume down button at the same time.
Viewing pictures and videos
Photos and videos are stored in your device's internal storage. You can view your photos and videos
by using the following methods:
Tap the thumbnail when using the Camera app.
Go to Photos.
Go to File Manager.
The screenshots are stored in your device's internal storage. You can view your screenshots by
using the following methods:
Go to
Photos
.
Go to File Manager.
Network
You need to set up a wireless network before connecting to the Internet.
Set up a WLAN network.
*Set up a mobile network.
Set up a VPN network.
*Set up a hotspot.
Setting up a WLAN network
Go to > Settings > WLAN.
Turn on the WLAN switch and tap a WLAN hotspot in the list to connect to the Internet.
When you are connecting to a secure hotspot, you need to enter your login name and password to
connect.
*Setting up a mobile network
Go to > Settings > Data usage.
Note: You need a valid SIM card with data service. If you don't have a SIM card, contact your
carrier.
Setting up a VPN network
VPNs are used within organizations to allow you to communicate private information securely over a
non-private network. You may need to configure a VPN, for example, to access your work email. Ask
the network’s administrator for the settings necessary to configure a VPN for your network.
Go to > Settings > More > VPN.
Tap to edit the VPN profile, including the server name, type, and the server address, and then
tap SAVE.
Tap the VPN server name, enter the username and password, and then tap CONNECT to connect
to the VPN network.
Tap to edit or delete the VPN.
Note:You need to set a lock screen pattern, PIN or password before using a VPN. Go to
Settings > Security > Screen lock to select a screen lock option and set up the screen lock.
*Setting up a hotspot
You can use personal hotspot to share an Internet connection with a computer or other device.
Go to
> Settings > More > Tethering & portable hotspot and do the following:
Turn on Portable WLAN hotspot.
Tap Set up WLAN hotspot to configure the hotspot.
You can also use Bluetooth tethering or USB tethering.
Note: Tell your friends the Network name and password, and then they can share your mobile
network.
Internet
You can browse the web if your device is connected to a wireless network or a cellular network.
To open the browser app, go to Chrome.
Visiting websites
You can use the Chrome app to visit websites.
Type a web address
You don't need to type the full web address of an "http://" website to access it.
To visit "http://www.lenovo.com", simply type "www.lenovo.com" into the address bar and Tap Go.
Search for keywords
You can also type keywords into the address bar to search for webpages.
You can set a search engine in > Settings > Search engine.
Add a new webpage
Tap
> New tab to add a new webpage tab.
Tap
> New incognito tab to visit a website without leaving any traces of your visit.
Close a webpage
Tap
to close a webpage tab.
Refresh a webpage
Tap
to refresh a webpage.
Tap
to return to the previous webpage.
Tap
to go forward to a recent webpage.
Saving webpages
You can save images and webpages in your device's internal storage.
Save images
Press and hold the image, then tap Download image.
Bookmark webpages
Tap
to add a webpage to Bookmarks.
Tap
> Bookmarks to view bookmarks.
Setting accessibility preferences
Tap > Settings > Accessibility to set the text scaling and the webpage zoom.
Gmail
You can send and receive emails if your device is connected to a wireless network.
To access the Gmail app, go to Gmail.
Setting up a Gmail account
You can sign into Gmail if you have a Gmail account. If not, you will need to create a Gmail account,
and you can also sign in email accounts provided by other company.
Using Email
After setting up your email account, you can use the Gmail app to send and receive emails.
Maps
You need to select the following settings before you can use Maps.
Go to
> Settings > Location and enable location access for Google apps.
Finding a location
Type the address that you want to find, then press .
You can also tap , then say the address you want.
Current location
Tap to see your current location.
Then tap Explore around you to check what is nearby.
Planning a route
Tap and type in "Your location" and "Choose destination", or just choose the starting point as
"Your location".
Choose the travel mode: by car, by bus, or on foot.
Sync
You can transfer data between your device and computer such as music, pictures, videos,
documents, Android application package (APK) files, and so on.
Connecting your device to your computer
Connect your device and computer using a USB cable.
Slide down from the top of the screen, you will see "USB for file transfer" in the notifications bar.
Tap USB for file transfer to view other options.
Selecting the computer connection mode
You can select one of the following options：
Media device (MTP): Select this mode if you want to transfer media files such as photos, videos,
and ringtones between your tablet and the computer.
Camera (PTP): Select this mode if you only want to transfer only photos and videos between your
tablet and the computer.
Charge this device: Select this mode if you want to charge your phone only.
MIDI: Select this mode if you want MIDI-enabled apps on your device to work with MIDI software
on the computer.
Installing APKs
Follow these steps:
Set the device to allow the installation of apps obtained from unknown sources.
Go to > Settings > Security, tap Unknown sources and tap OK.
Copy the APK file from the computer to the device in "Media device" mode.
Open the apps category in the File manager.
Settings
Settings home screen
Tap > Settings to enter into settings home.
When you are setting any other functions (except Scheduled power on and off) for the device,
slide your finger right across the screen or tap
to open the setting shortcut panel.
Setting the language
Go to > Settings > Languages & input > Languages > Add a language.
Select the language that you want to add.
Drag the added language to the first line.
Appendix
Important safety and handling information
To avoid personal injury, property damage, or accidental damage to the product, read all of the
information in this section before using the product. For additional tips to help you operate your
device safely, go to http://www.lenovo.com/safety.
Handle your device with care
Do not drop, bend, or puncture your device; do not insert foreign objects into or place heavy objects
on your device. Sensitive components inside might become damaged.
Your device screen is made of glass. The glass might break if the device is dropped on a hard
surface, is subjected to a high impact, or is crushed by a heavy object. If the glass chips or cracks,
do not touch the broken glass or attempt to remove it from the device. Stop using the device
immediately and contact Lenovo technical support for repair, replacement, or disposal information.
When using your device, keep it away from hot or high-voltage environments, such as electrical
appliances, electrical heating equipment, or electrical cooking equipment. Use your device only in the
temperature range of 0°C (32°F) to 40°C (104°F) (storage -20°C (-4°F) to 60 °C (140°F)) to avoid
damage.
Don't expose your device to water, rain, extreme humidity, sweat or other liquids.
Do not disassemble or modify your device
Your device is a sealed unit. There are no end-user serviceable parts inside. All internal repairs
must be done by a Lenovo-authorized repair facility or a Lenovo-authorized technician. Attempting to
open or modify your device will void the warranty.
Built-in rechargeable battery notice
Do not attempt to replace the internal rechargeable lithium ion battery. There is risk of explosion if
the battery is replaced with an incorrect type. Contact Lenovo Support for factory replacement.
Plastic bag notice
DANGER:
Plastic bags can be dangerous. Keep plastic bags away from babies and children to avoid
danger of suffocation.
Adapter information
Prevent your device and AC adapter from getting wet.
Do not immerse your device in water or leave your device in a location where it can come into
contact with water or other liquids.
Use approved charging methods only.
Note: Please only use standard Lenovo power adapters. The use of third-party power adapters will
affect the charging speed, resulting in abnormal charging and potential damage to the equipment.
Connect a standard power adapter to a suitable power outlet.
Use a standard data cable to connect the device to a PC or a device that complies with USB
2.0 or higher.
Charging devices might become warm during normal use. Ensure that you have adequate ventilation
around the charging device. Unplug the charging device if any of the following occurs:
The charging device has been exposed to rain, liquid, or excessive moisture.
The charging device shows signs of physical damage.
You want to clean the charging device.
Warning:
Lenovo is not responsible for the performance or safety of products not manufactured or
approved by Lenovo. Use only approved Lenovo ac adapters and batteries.
Caution about high volume usage
Warning：exposure to loud noise from any source for extended periods of time may affect your
hearing. The louder the sound, the less time is required before your hearing could be affected. To
protect your hearing:
Limit the amount of time you use headsets or headphones at high volume.
Avoid turning up the volume to block out noisy surroundings.
Turn the volume down if you can’t hear people speaking near you.
If you experience hearing discomfort, including the sensation of pressure or fullness in your ears,
ringing in your ears or muffled speech, you should stop listening to the device through your headset
or headphones and have your hearing checked.
Safety instructions for parents and adult supervisors
Your mobile device is not a toy. Not recommended for children under 3 years of age to play with it.
As with all electrical products, precautions should be observed during handling and using of
electrical products to reduce the risk of electric shock. If parents choose to allow children 3 or older
to use the device, they should caution his or her child about the potential hazard while using and
handling the mobile device.
Parental should inspect the mobile device (including the ac power adapter and the small part, as
applicable) periodically for damage. Routinely check this mobile device to ensure that the device is
working properly and is safe for children to use.
Take care when using your device in a motor vehicle or on a bicycle
Always prioritize your safety and the safety of others. Follow the law. Local laws and regulations
might govern how you can use mobile electronic devices, such as your device, while you drive a
motor vehicle or ride a bicycle.
Dispose according to local laws and regulations
When your device reaches the end of its useful life, do not crush, incinerate, immerse in water, or
dispose of your device in any manner contrary to local laws and regulations. Some internal parts
contain substances that can explode, leak, or have an adverse environmental effects if disposed of
incorrectly.
See “Recycling and environmental information” for additional information.
Keep your device and accessories away from small children
Your device contains small parts that can be a choking hazard to small children. Additionally, the
glass screen can break or crack if dropped on or thrown against a hard surface.
Protect your data and software
Do not delete unknown files or change the name of files or directories that were not created by you;
otherwise, your device software might fail to work.
Be aware that accessing network resources can leave your device vulnerable to computer viruses,
hackers, spyware, and other malicious activities that might damage your device, software, or data. It
is your responsibility to ensure that you have adequate protection in the form of firewalls, antivirus
software, and anti-spyware software and keep such software up to date.
Keep electrical appliances away from your device. These include electric fans, radios, high-powered
speakers, air-conditioners, and microwave ovens. The strong magnetic fields generated by electrical
appliances can damage the screen and the data on the device.
Be aware of heat generated by your device
When your device is turned on or the battery is charging, some parts might become hot. The
temperature that they reach depends on the amount of system activity and the battery charge level.
Extended contact with your body, even through clothing, could cause discomfort or even a skin burn.
Avoid keeping your hands, your lap, or any other part of your body in contact with a hot section of
the device for any extended time.
Electronic emission notices
FCC Compliance Statement
This equipment 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 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 an authorized dealer or service representative for help.
Lenovo is not responsible for any radio or television interference caused by unauthorized changes or
modifications to this equipment. Unauthorized changes or modifications could void the user’s
authority to operate the equipment.
This device 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.
Responsible Party:
Lenovo (United States) Incorporated
1009 Think Place - Building One
Morrisville, NC 27560
Telephone: 1-919-294-5900
IC Caution
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject to
the following two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference, including interference that may cause undesired
operation of the device.
Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisée aux deux conditions suivantes:
(1) l'appareil ne doit pas produire de brouillage, et
(2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage
est susceptible d'en compromettre le fonctionnement.
European Union-Compliance to the Electromagnetic Compatibility Directive
This product is in conformity with all the requirements and essential norms that apply to European
Council Directive 1999/5/EC. European Council Directive 1999/5/EC remains in force during the
transition period of European Council Directive 2014/53/EU, until June 12, 2017. Lenovo cannot
accept responsibility for any failure to satisfy the protection requirements resulting from a non-
recommended modification of the product, including the installation of option cards from other
manufacturers. This product has been tested and found to comply with the limits for Class B
Information Technology Equipment according to European Standard EN 55022. The limits for Class B
equipment were derived for typical residential environments to provide reasonable protection against
interference with licensed communication devices.
EU contact: Lenovo, Einsteinova 21, 851 01 Bratislava, Slovakia
German Class B compliance statement
Deutschsprachiger EU Hinweis:
Hinweis für Geräte der Klasse B EU-Richtlinie zur Elektromagnetischen Verträglichkeit Dieses
Produkt entspricht den Schutzanforderungen der EU-Richtlinie 2014/30/EU (früher 2004/108/EC) zur
Angleichung der Rechtsvorschriften über die elektromagnetische Verträglichkeit in den EU-
Mitgliedsstaaten und hält die Grenzwerte der Klasse B der Norm gemäß Richtlinie. Um dieses
sicherzustellen, sind die Geräte wie in den Handbüchern beschrieben zu installieren und zu
betreiben. Des Weiteren dürfen auch nur von der Lenovo empfohlene Kabel angeschlossen werden.
Lenovo übernimmt keine Verantwortung für die Einhaltung der Schutzanforderungen, wenn das
Produkt ohne Zustimmung der Lenovo verändert bzw. wenn Erweiterungskomponenten von
Fremdherstellern ohne Empfehlung der Lenovo gesteckt/eingebaut werden.
Deutschland:
Einhaltung des Gesetzes über die elektromagnetische Verträglichkeit von Betriebsmitteln Dieses
Produkt entspricht dem „Gesetz über die elektromagnetische Verträglichkeit von Betriebsmitteln“
EMVG (früher „Gesetz über die elektromagnetische Verträglichkeit von Geräten“). Dies ist die
Umsetzung der EMV EU-Richtlinie 2014/30/EU (früher 2004/108/EWG) in der Bundesrepublik
Deutschland.
Zulassungsbescheinigung laut dem Deutschen Gesetz über die elektromagnetische Verträglichkeit
von Betriebsmitteln, EMVG vom 20. Juli 2007 (früher Gesetz über die elektromagnetische
Verträglichkeit von Geräten), bzw. der EMV EU Richtlinie 2014/30/EU (früher 2004/108/EC), für
Geräte der Klasse B.
Dieses Gerät ist berechtigt, in Übereinstimmung mit dem Deutschen EMVG das EG-
Konformitätszeichen - CE - zu führen. Verantwortlich für die Konformitätserklärung nach Paragraf 5
des EMVG ist die Lenovo (Deutschland) GmbH, Meitnerstr. 9, D-70563 Stuttgart.
Informationen in Hinsicht EMVG Paragraf 4 Abs. (1) 4:
Das Gerät erfüllt die Schutzanforderungen nach EN 55024 und EN 55022 Klasse B.
Japanese VCCI Class B statement
この装置は、クラスB情報技術装置です。この装置は、家庭環境で使用することを目的としていますが、この
装置がラジオやテレビジョン受信機に近接して使用されると、受信障害を引き起こすことがあります。 取扱
説明書に従って正しい取り扱いをして下さい。VCCI-B
Japan compliance statement for products that connect to power mains rated at less than or equal to
20A per phase
日本の定格電流が 20A/相 以下の機器に対する高調波電流規制
高調波電流規格 JIS C 61000-3-2 適合品
Environmental, recycling, and disposal information
General recycling statement
Lenovo encourages owners of information technology (IT) equipment to responsibly recycle their
equipment when it is no longer needed. Lenovo offers a variety of programs and services to assist
equipment owners in recycling their IT products. For information on recycling Lenovo products, go to
http://www.lenovo.com/recycling.
Important battery and WEEE information
Batteries and electrical and electronic equipment marked with the symbol of a crossed-out wheeled
bin may not be disposed as unsorted municipal waste. Batteries and waste of electrical and
electronic equipment (WEEE) shall be treated separately using the collection framework available to
customers for the return, recycling, and treatment of batteries and WEEE. When possible, remove
and isolate batteries from WEEE prior to placing WEEE in the waste collection stream. Batteries are
to be collected separately using the framework available for the return, recycling, and treatment of
batteries and accumulators.
Country-specific information is available at http://www.lenovo.com/recycling.
Battery recycling information for Brazil
Declarações de Reciclagem no Brasil
Descarte de um Produto Lenovo Fora de Uso Equipamentos elétricos e eletrônicos não devem ser
descartados em lixo comum, mas enviados à pontos de coleta, autorizados pelo fabricante do
produto para que sejam encaminhados e processados por empresas especializadas no manuseio de
resíduos industriais, devidamente certificadas pelos orgãos ambientais, de acordo com a legislação
local. A Lenovo possui um canal específico para auxiliá-lo no descarte desses produtos. Caso você
possua um produto Lenovo em situação de descarte, ligue para o nosso SAC ou encaminhe um e-
mail para: [email protected], informando o modelo, número de série e cidade, a fim de enviarmos
as instruções para o correto descarte do seu produto Lenovo.
Recycling information for Japan
Recycling and disposal information for Japan is available at http://www.lenovo.com/recycling/japan.
Recycling information for India
Recycling and disposal information for India is available at
http://www.lenovo.com/social_responsibility/us/en/sustainability/ptb_india.html.
Battery recycling marks
The battery recycling information of Taiwan
Battery recycling information for the United States and Canada
Battery recycling information for the European Union
ENERGY STAR model information
ENERGY STAR® is a joint program of the U.S. Environmental Protection Agency and the U.S.
Department of Energy aimed at saving money and protecting the environment through energy
efficient products and practices.
Lenovo is proud to offer our customers products with the ENERGY STAR qualified designation. You
might find an ENERGY STAR mark affixed on the computer or displayed on the power settings
interface. Lenovo tablets of the following model name, if carry an ENERGY STAR mark, have been
designed and tested to conform to the ENERGY STAR program requirements for tablets.
Lenovo TB-X304F
By using ENERGY STAR qualified products and taking advantage of the power-management features
of the tablet, you can help reduce the consumption of electricity. Reduced electrical consumption can
contribute to potential financial savings, a cleaner environment, and the reduction of greenhouse gas
emissions.
For more information about ENERGY STAR, go to http://www.energystar.gov.
Export classification notice
This product is subject to the United States Export Administration Regulations (EAR) and has an
Export Classification Control Number (ECCN) of 5A992.c. It can be re-exported except to any of the
embargoed countries in the EAR E1 country list.
Troubleshooting
Insufficient memory prompt appears during app installation
Please free up some memory and try to install again.
The touch screen does not work or is not sensitive
Please press and hold the On/Off button for more than 8 seconds until the device turns off. Then
switch it on again in normal way.
Device does not power on or system crashes
Please charge the battery for half an hour and then press and hold the On/Off button for more than
10 seconds until the device turns off. Then switch it on again in normal way.
The device cannot access the internet via a wireless network
Restart the wireless router or go to Settings and restart WLAN.
The device cannot wake up from sleep mode
Please press and hold the On/Off button for more than 8 seconds until the device turns off. Then
switch it on again in normal way.
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