Flex Pai

Flex Pai
  • Display Size: 7.8-inch
  • Camera: D R 16+20MP
  • RAM: 8GB
  • CPU: Snapdragon 8 Series
  • Battery: 3800mAh
  • Dimension: 134 x 190.35 x 7.6 mm

Ratings From Our Experts

The overall rating is based on review by our experts

8.5 4.3 1
  • Build Quality 10 / 10
  • Chip-Set 9 / 10
  • Camera Quality 9 / 10
  • Connectivity 8 / 10
  • Battery Backup 7 / 10
  • Value For Money 8 / 10

Flex Pai with 8GB RAM, 128/256GB internal, Snapdragon 8 Series Processor, Fingerprint sensor and 3800mAh battery.

Flex Pai Key Specs:

  • Display: 7.8-inch FHD – primary = 16:9/810×1440, secondary = 18:9/720×1440, edge = 21:6/390×1440
  • CPU: Octa-Core up to 2.8GHz
  • OS: Android 9.0 Pie
  • Camera: Dual rear camera 16+20MP with AF and flashlight + No
  • Bluetooth: 5.1
  • Navigation: GPS, A-GPS, GLONASS
  • Sensor: Accelerometer, Ambient Light Sensor, Gravity Sensor, Gyroscope, Infrared, Proximity Sensor, fingerprint sensor
  • SIM Card: Dual SIM, Nano SIM

Flex Pai Expert Thoughts:


flex pai

World’s first foldable smartphone is now a reality. Flex Pai is the first ever foldable smartphone with a 7.8-inch display and 3800mAh battery. Surprisingly this phone is not from big smartphone makers like Samsung or Huawei, but a China-based company named Royole corporation. Actually, Royole is the brand who makes flexible displays and sensors. We all were waiting for this technology since Samsung has announced its foldable phone. But Flex Pai makes debut in the smartphone market with its flexible display.

Display and Design:

Flex Pai is featured with large tablet size 7.8-inch AMOLED display with 4:3 aspect ratio and 1920 x 1440 pixels resolutions. If you want to use it with folding it, then it will turn into three displays (primary, secondary and edge). Now the front display will have a 16:9 aspect ratio and 810 x 1440 pixels resolutions. Secondary display will have 18:9 aspect ratio and 720 x 1440 pixels resolutions. Similarly, Edge screen will have 21:6 aspect ratio and 390 x 1440 pixels resolutions. Edge screen will notify you about any calls or messages.

Design of the phone looks cool, as we all know this is the world’s first flexible phone, and we can expect some errors and problems in design. But this is no more futuristic technology, we can except some new smartphones like this in near future.

Performance and Storage:

The all-new Flex Pai is powered by Snapdragon 8510 SoC clocked at 2.8GHz and coupled with Adreno 640 GPU. For storage, it comes with two variations, 8GB/128GB, and 8GB/256GB RAM and ROM respectively. Internal storage is expandable up to 256GB with the external MicroSD card.


flex pie

One plus point of this flexible screen is that it can use a single camera for both front and rear use. Flex Pai comes with 16MP primary and 20MP secondary camera sensor along with f/1.8 aperture on both sensors. It comes with autofocus, optical image stabilization, digital zoom, geotagging and other best photography features.

Battery and Connectivity:

The phone is powered by a 3800mAh non-removable battery which supports 25W charger. It runs on Android 9.0 Pie based Water OS 1.0 and comes with a fingerprint sensor. On the connectivity front, it offers 4G VoLTE, Dual SIM, 3.5mm audio jack, Wi-Fi, Bluetooth 5.1 and Hotspot. It comes with Dual 4G SIM connectivity, which supports 4G simultaneously.

Price and availability:

The Flex Pai with 8GB/128GB RAM/ROM variant costs $1588 and 8GB/256GB variant costs $1759. It is available to buy in China starting from today.

Provide review if you are already using this phone, This will help our readers to choose the right phone. And if you are planning to buy this phone then don’t forget to check our User’s Review section at last.


Flex Pai - Full Specifications

Brand And Model

  • Brand Name of the brand which manufactures the device.
  • Model Model name or number of the device.
    Flex Pai


  • Weight
  • Colors Information about the colors, in which the device is available in the market.
  • Body Material The material used in the fabrications of the device's body.
    Metal, Glass

Network And Technology

  • Mobile Network Technology Information about types of mobile network used in the device. GSM, WCDMA, CDMA, TD-SCDMA, and LTE, TD-LTE.
    GSM / UMTS / LTE


  • Display Size The mobile device is represented by the length of its diagonal which is measured in inches.
    7.8-inch, Three screens (primary, secondary and edge) with the following aspect ratios and resolutions (primary = 16:9/810×1440, secondary = 18:9/720×1440, edge = 21:6/390×1440)
  • Display Type Whether the display is IPS or LED or OLED or AMOLED - It simplifies the type of the display used in the device.
    AMOLED display
  • Display Features Information about the features of the display such as Capacitive touch, multitouch etc.
    Multi-Touch, Capacitive
  • Resolution Display resolutions show the number of pixels on the horizontal and vertical side of the screen, higher the resolution is greater the details of the displayed content.
    1920 x 1440 pixels
  • Display Glass Whether display have protection like, Gorilla Glass or it is curved.
    2.5D Curved Glass Screen, Foldable screen


  • Primary Camera Information about the rear camera of the device. Sensor type, image resolutions, video resolutions, Flash type and Video FPS.
    Dual : 16MP primary sensor with f/1.8, 20MP secondary sensoe with f/1.8
  • Front Camera Information about the front side camera of the device. Image resolutions, Sensor type, Flash type, Video resolutions, Video FPS and other features.
  • Camera Features Information about additional software and hardware features of the primary and secondary camera, which improves its overall performance.
    Autofocus, Digital Zoom, Countinous Shootings, Geotagging, Panorama, HDR
  • Flash Type
  • Video List of some common video formats supported by the device.

Hardware and Software Details

  • Chip-Set The chip-set integrates different hardware components such as the CPU, GPU, memory, peripherals, interfaces, etc. As well as the software functioning.
    Next Gen Qualcomm Snapdragon 8150
  • Operating System Information about the operating system used by the device and its version.
    Android 9.0 Pie
  • CPU CPU is the Central Processing Unit or the processor of the device. Information about the type and cores of the processor used in the device.
    Octa-Core up to 2.8GHz
  • GPU GPU is Graphical Processing Unit. Information about GPU type, Cores and Frequency.
    Adreno 640


  • RAM information about the RAM capacity, type, channels and its frequency.
  • Internal Memory Information about the capacity of the inbuilt storage of the device. Sometimes some of the devices have a different variation in the terms of internal storage.
  • Card Slot Information about the expandable storage of the device
    Expandable up to 256 with external MicroSD card
  • RAM Type Information about the type of the RAM used in the device.


  • 3.5mm Jack Information, whether the device is having a 3.5mm audio jack
  • Speakers Information about number of speakers and types of speaker used in the device.
  • Simulated Surround


  • Bluetooth Bluetooth is a standard for secure wireless data transfer between two Bluetooth enabled devices over short distances.


  • USB Information about connector type, version, and features of the USB used in the device.
    3.1 USB Type C


  • Wi-FI Information about frequency and capacity of the Wi-Fi signals.
    802.11 b/g/n


  • Traking/Positioning Information about positioning and navigation technologies supported by the device.
    GPS / AGPS


  • Sensors Information about the type of the sensors used in the device.
    Accelerometer, Light, Prixomity, Fingerprint


  • Browser Information about some features and standards supported by the browser of the devices.


  • Battery Capacity The capacity of the battery shows the maximum charge, which it can store, measured in mili-Ampere hours.
  • Type The battery type is determined by its structure and more specifically by the chemical used in it. There are different battery types available, where some of the commonly used batteries are Li-Ion and Li-Polymer.
  • Charger
    Fast Charging

Specific Absorption Rate

  • SAR US This SAR rating and shows the maximum and highest level of the exposure to electromagnetic radiation taken when the device is placed near to ear. The applicable limit for the US is 1.6 W/Kg per 1g of tissue. In the US the FCC tests and sets the SAR limits of the all mobile devices, which are controlled by the CTIA.
  • SAR EU This SAR rating and shows the highest level of the exposure to electromagnetic radiation taken when the device is placed near to ear. The applicable limit for the EU is 2 W/Kg per 10g of tissue. The standards follow the ICNIRP Guidelines 1998 as well as the IEC standards and are determined by the CENELEC.


  • Sim Card Type Information about the type and size of the SIM card used in the device.
    Nano SIM
  • No Of Sim Information about the SIM card quantity that can use in the device.
    Dual SIM

Releases & Availibility

  • Released & Available Information about the availability of the device in the market and its launch date.
    Available, Released November 2018

Extra Features

  • Extra Features If the device have any extra features which is unique among all other phones.

Flex Pai - Detailed User Review

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