Royole FlexPai

Unfolded: 1920 x 1440, 7.8 &nbsp; in (20 &nbsp; cm), 4:3 ratio , 311 ppi
Folded: 390 x 1440, 4.0 &nbsp; in (10 &nbsp; cm), 21:9 ratio, 311 ppi

Royole FlexPai
Brand	Royole
Manufacturer	Royole
First released	8 January 2018
Availability by region	1 December 2018 (Worldwide)
Successor	Royole FlexPai 2
Form factor	Folding slate
Dimensions	Unfolded; 160.9 mm (6.33 in) H; 117.9 mm (4.64 in) W; 6.9 mm (0.27 in) D; Folded; 160.9 mm (6.33 in) H; 62.9 mm (2.48 in) W; 15.5 mm (0.61 in) D;
Weight	320 g (11 oz)
Operating system	Original: Android 9.0 "Pie"
System-on-chip	Qualcomm Snapdragon 8 Series, 8150, 64-bit Processor
CPU	Octa-Core 2.8GHz Clock Speed
GPU	Qualcomm Adreno 640
Memory	6 GB / 8 GB LPDDR4X
Storage	128 GB / 512 GB UFS 3.0
Removable storage	External Memory Supported Up to 256GB
Battery	Non-Removable 4,000 mAh Lithium-Polymer, 5V/5A
Rear camera	20 MP, f/1.8 aperture;
Front camera	16 MP, f/1.8 aperture;
Display	Dynamic AMOLED, FHD+, 4:3 Aspect Ratio (expanded mode), 311PPI; Unfolded: 1920 x 1440, 7.8 in (20 cm), 4:3 ratio, 311 ppi; Folded: 390 x 1440, 4.0 in (10 cm), 21:9 ratio, 311 ppi;
Sound	Stereo speakers
Connectivity	Bluetooth 5.1 Wi-Fi b/g/n/ac/ax 3G/4G/4G LTE
Data inputs	Sensors:; Accelerometer; Barometer; Fingerprint scanner (side-mounted); Pressure sensor; Gyroscope; Hall sensor; Proximity sensor; Magnetometer; RGB Light sensor;
Other	Physical sound volume keys; USB-C;
References

The Royole FlexPai is a foldable smartphone made by the Chinese company Royole. It was the first commercially available foldable phone, with a 7.8 inch display that folds outwards. It was first announced at CES 2018 and it started shipping on December of the same year.