Lenovo YOGA BOOK YB1-X90F

Introduction

The Lenovo YOGA BOOK YB1-X90F is a versatile 2-in-1 tablet that combines the convenience of a tablet with the productivity of a laptop. It features a unique Halo Keyboard that adapts to your typing habits, providing a comfortable and efficient typing experience. With its sleek design and powerful performance, the YOGA BOOK YB1-X90F is perfect for both work and play.

Specifications

Category	Details
Model	Lenovo Yoga Book YB1-X90F (Android version)
Display	10.1″ IPS touchscreen, 1920 × 1200 (WUXGA)
Processor (CPU)	Intel Atom x5-Z8550 (Quad-Core 1.44 GHz, Turbo up to 2.4 GHz)
Graphics (GPU)	Intel HD Graphics 400
RAM	4 GB LPDDR3
Storage	64 GB eMMC, expandable via microSD (up to 128 GB)
Operating System	Android 6.0 (Marshmallow)
Battery	8500 mAh Li-Polymer (approx. 12–15 hours usage)
Weight	~690 g
Connectivity	Wi-Fi 802.11 a/b/g/n/ac, Bluetooth 4.0, Micro-USB 2.0 (with OTG support), Micro-HDMI
Audio	Dual Dolby Atmos speakers
Camera	8 MP rear, 2 MP front
Stylus	Lenovo Real Pen (Wacom-based, 2048 pressure levels)
Keyboard	Halo Keyboard / Create Pad (capacitive touch, backlit)

Instructions

Power on the YOGA BOOK YB1-X90F by pressing the power button.
Follow the on-screen instructions to set up your device.
Connect to a Wi-Fi network to access the internet.
Use the Halo Keyboard for typing. It will adapt to your typing style over time.
Explore the various apps and features available on the YOGA BOOK YB1-X90F.

Force shut down

Press and hold the On/Off button for more than 10 seconds until the screen goes dark.

Multi-windows
By using the multi-window function, you can run multiple applications on the screen at the same time.

Open an app, and then you can do any of the following: Double-tap the title bar to switch between the window mode and the full screen mode.

Tap the app icons to open other apps.
Tap and hold the title bar, and then drag it to the top of the screen to switch to the full-screen mode.
To move a window, tap and hold the title bar, drag it to where you want to place it, and then release it.
To minimize the window, tap the app icon in the taskbar. Tap the icon again to display the window.
To pin or unpin the app, tap or .
To close the app, drag the window to Close at the bottom of the screen. Note: Some apps cannot support this feature.

Handwriting

Use the Real Pen (included with your tablet) to get started with any features that support inking and instantly turn your paperwork into an electronic format.

Your Real Pen has pressure sensitivity.
Refills (included with your tablet) are unique to your tablet.

Note: You may purchase the accessories by contacting your Lenovo dealer or accessing the Lenovo Collection app on your device; however, in some countries, the Lenovo Collection app is not available.

Enabling the handwriting function

To enable the handwriting function, tap on the keyboard. The page thumbnail will be displayed in the lower right corner of the screen.

Note: When you enable the handwriting function, the keyboard is disabled.

Replacing your Real Pen refill
Your Real Pen refill kit contains refills for replacement. Choose a refill that suits your writing method and replace the refill as shown.

Use the Real Pen cap as a refill remover. Insert the refill into the hole on the top of the cap.
Tilt the pen until the refill is locked.
Pull out the refill directly.
Insert the refill into the pen until it is locked into place.

Starting to write
To start to write, do all of the following:

Use the Real Pen with a stylus refill to write within the writing area, or use the Real Pen with an ink refill to write on a blank piece of paper covering the keyboard.
Note: We recommend using BOOK Pad paper. You can also use other types of paper as long as it is no thicker than 5 mm.
The content you write will be displayed on the thumbnail and saved synchronously. Press the volume button, or double-tap to start a new page if necessary.
During writing, you can press the On/Off button to lock the screen. The content you write during this period will be saved automatically. Press the On/Off button again to turn on the lock screen,; the thumbnail and the written content will be displayed on the screen.
Note: During writing, the backlight of is illuminated.
When you have finished writing, press again to stop writing and save the page.

Lenovo Note Saver
In the Lenovo Note Saver app, you can create new Notes, edit your Notes, and share your Notes or pages with your friends.

Notes list
Tap Lenovo Note Saver to see all of your Notes listed.

Browsing a note
Tap the Note that you want to browse. All page thumbnails in this Note are listed on the left side.

Editing the note
If you want to edit a page while browsing it, tap it to enter edit mode. In edit mode, you can draw with the Real Pen or draw with your fingers on the screen.

Halo Keyboard

Shortcut keys
To help you access frequently-used tasks quickly, special shortcut keys are located on the top row of the keyboard.

Lenovo YOGA BOOK YB1-X90F-keyboard setting

Keyboard settings

Setting up your keyboard layout

The layout of your keyboard may be different depending on your location. To change your keyboard, go to > Settings > Language & input > Halo Keyboard, and then choose the keyboard you want.

Silencing the keyboard

Go to > Settings > Halo Keyboard, and turn off the TouchTone switch.

Adjusting the brightness level

Go to > Settings > Halo Keyboard > Brightness adjustment, you can set the brightness level of Active and Inactive.

Setting the keyboard vibration

When you press the keys, you can feel a slight vibration of the keyboard. Keyboard vibration is enabled by default.
To set the vibration intensity, go to > Settings > Halo Keyboard > Vibration intensity.
To disable vibration, go to > Settings > Halo Keyboard, and turn the Vibrate on keypress switch off.

Using the touchpad

Your tablet has a touchpad on the bottom of the keyboard, which allows you to perform gestures such as tapping, scrolling, and dragging.
To move the cursor on the screen, slide your finger over the touchpad in the direction you want.
To tap on an app's icon, tap the touchpad.
To scroll pages such as app lists, webpages, or documents, slide up or down using two fingers.

Setting up the touchpad

To set the pointer speed, go to Settings > Language & input > Mouse/trackpad.

Internet

You can browse the web if your device is connected to a wireless network
To open the browser app, go to Chrome.

Email

You can send and receive emails if your device is connected to a wireless network. To access the Google Email app, go to Gmail.

Setting up an Email account

You can sign in to your o email if you have an email account. If not, you will need to create an email account.
You need to set up an email account the first time you use the Gmail app.
Tap Add an email address, select the type of email you want to add, and tap NEXT. Set up your email account according to the on-screen prompts.

Using Email
After setting up an 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

Synchronizing

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, and you will see “USB for charging” in the notifications bar.
Tap the USB for charging for other options.

Selecting the computer connection mode

You can select one of the following options

Charging: Select this mode if you want to charge your phone only.
File transfers (MTP): Select this mode if you want to transfer media files such as photos,
videos, and ringtones between your tablet and the computer.
Photo transfers (PTP): Select this mode if you only want to transfer only photos and videos
between your tablet and the computer.
MIDI: Select this mode if you want MIDI-enabled applications on your device to work with
MIDI software on the computer.

Installing APKs

Follow these steps:
You need to set the device to allow the installation of apps obtained from unknown sources.
Go to Settings > Security , select Unknown sources, and tap OK.
Copy the APK file from the computer to the device in “File transfers” mode.
Open the apps category in the File Manager.

Camera
To open the Camera app, go to Camera.

Maintenance Guide

Keeping the Yoga Book in good condition helps extend its life and performance.

Regular Cleaning

Use a soft microfiber cloth slightly dampened (no sprays directly) to clean the screen and Create Pad.
Avoid alcohol-based cleaners on the Halo keyboard — it may damage the touch layer.
Clean ports (USB, micro-HDMI) gently with a soft brush or compressed air.

Battery Care

Avoid letting the battery discharge completely often — try to keep it between 20%–80%.
If not used for weeks, charge to ~50% before storing.
Don’t leave it plugged in continuously for days — cycle it at least once a week.

Software Maintenance

Clear cache regularly: Settings → Storage → Cached data → Clear.
Disable or uninstall unused apps to free space and memory.
Use “Files by Google” to manage storage and junk files.
Avoid rooting or installing unofficial ROMs unless absolutely necessary — it may cause instability.

Backup & Data Safety

Use Google Drive or a microSD card for regular backups.
Sync notes from the Real Pen apps to the cloud (Lenovo Note Saver, OneNote, etc.).

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 hold down the On/Off button for more than 10 seconds until the device turns off. Then switch it on again in the normal way. The device does not power on, or the system crashes.
Please charge the battery for half an hour and then hold down the On/Off button for more than 10 seconds until the device turns off. Then switch it on again in the normal way.

There is no sound, or the other person cannot hear during a call.
Please adjust the volume using the volume button.

The device cannot access the internet via wireless network
Restart the wireless router or go to Settings and restart WLAN.

The device cannot wake up from sleep mode.
Please hold down the On/Off button for more than 10 seconds until the device turns off. Then switch it on again in the normal way.y

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