Asus ZenFone is a discontinued series of Android smartphones designed, marketed and produced by Asus from 2014 until 2026. Various models are powered by a series of Intel Atom, Qualcomm Snapdragon, and MediaTek processors. Most ZenFone also features the ZenUI user interface.
History The first-generation ZenFones were announced at the 2014 Consumer Electronic Show in Las Vegas, Nevada; it uses the same "Zen" moniker originally introduced with the ZenBook laptops.
In January 2026, ASUS' chairman Jonney Shih officially declared it would stop producing new smartphone models, but older smartphones would still have warranty and software support. The R&D of the smartphone market has been moved to commercial PCs and physical AI.
ZenUI interface ASUS ZenUI is a front-end touch interface developed by Asus with partners, featuring a full touch user interface. ZenUI also comes with Asus-made apps preloaded like ZenLink (PC Link, Share Link, Party Link & Remote Link).
The ZenUI made its debut in the Asus ZenFone series, Asus Memo Pad 7 (ME176C) and Asus Padfone Mini (2014). Apart from ZenFone, the interface was also used on Asus Pegasus 3, Asus PadFone devices, Asus Memo Pad 7 & 8, Asus Fonepad 7 & 8, Asus Zenpad 10, and Asus Transformer Pad.
WaveShare UI Before ZenUI, Asus made a front-end interface for Android phones and tablets called ASUS WaveShare UI, originally released on the Asus PadFone hybrid smartphone/tablet, and was later used on other Asus products. The last gadget to use the WaveShare UI was the ASUS MeMO Pad HD 7. Devices that used this UI were:
Asus PadFone Infinity (A80) Asus Fonepad Note 6 (ME560CG) Asus New PadFone Infinity Asus PadFone 2 (A68) Asus Eee Pad Transformer Asus Slider Pad Asus Eee Pad Slider Asus Fonepad 7(ME372cg)
First generation (2014)
ZenFone 4
The ZenFone 4 is the 4-inch WVGA (800×480) TFT display model. The ZenFone 4 features a 1.2 GHz dual-core Intel Atom Z2520 saltwell processor, a 5 MP rear & 0.3 MP front camera and 1 GB RAM. However, ZenFone 4 does not have an LED flash unlike the rest of the models in the ZenFone series.
ZenFone 4.5 The ZenFone 4.5 is the 4.5-inch WVGA (854×480) TFT display model. Using the same processor as the ZenFone 4 and having 8GB of internal storage, 1GB of RAM and a MicroSD Card Slot supporting up to 64GB Storage, it does have a better rear camera than the ZenFone 4. The phone carries an 8 MP rear camera, and uses the same 0.3MP front camera as the ZenFone 4 does.
ZenFone 5 The ZenFone 5 is the mid range of the series and includes a 5-inch 1280×720 HD IPS display protected with Corning Gorilla Glass 3. This Zenfone features either a dual-core hyper-threaded (dubbed Multicore) Intel Atom or a quad-core Qualcomm Snapdragon processor, an 8 MP rear and 2 MP front camera.
This phone comes with 2 GB of RAM in comparison to other models and features at a competitive price. However, some of the earlier productions and certain variants of this phone came with 1 GB of RAM.
ZenFone 6 The ZenFone 6 features a 6-inch 1280×720 IPS display. The ZenFone 6 features a 2 GHz dual-core Intel Atom Z2580 processor, a 13 megapixel rear camera and 2 megapixel front-facing camera. The ZenFone 6 is equipped with 8 GB, 16 GB or 32 GB of internal memory, depending upon the version, external memory of up to 64 GB, and 2 GB of RAM.
Variants Model ProcessorProcessor Architecture RAM GPU Display Camera Internal Storage Battery Platform ZenFone 4 (A400CG) Intel Atom dual-core Z2520 (1.2 GHz)x86 1 GB PowerVR SGX544MP2 4.0 inches, WVGA 800x480, TFT Corning Gorilla Glass 3 VGA front5 MP rear 4 GB/8 GB 1200 mAh/1600 mAh Android 4.3 Jelly Bean; upgradable to Android KitKat 4.4.2 ZenFone 4 (A450CG) 4.5 inches, WVGA 854x480, IPS Corning Gorilla Glass 3 8 GB 1750 mAh Android 4.4 KitKat; upgradable to Android 5.0.2 Lollipop ZenFone 5 (A500CG) Intel Atom dual-core Z2580 (2.0 GHz) 2 GB 5.0 inches, HD 1280x720, IPS Corning Gorilla Glass 3 2 MP front8 MP rear 8 GB/16 GB/32 GB 2110 mAh Android 4.3 Jellybean; upgradable to Android 4.4.2 KitKat ZenFone 5 (A501CG) Intel Atom dual-core Z2560 (1.6 GHz) 8 GB/16 GB Android 4.3 Jelly Bean; upgradable to Android 5.0.2 Lollipop ZenFone 5 Lite (A502CG) Intel Atom dual-core Z2520 (1.2 GHz) 1 GB 5.0 inches, VGA 960x540, IPS VGA front8 MP rear 8 GB 2500 mAh Android 4.4.2 KitKat ZenFone 5 (A500KL) Qualcomm Snapdragon quad-core MSM8926 (1.2 GHz)ARM32 2 GB Adreno 305 5.0 inches, HD 1280x720, IPS Corning Gorilla Glass 3 2 MP front8 MP rear 8 GB/16 GB/32 GB 2110 mAh Android 4.4.2 KitKat; upgradable to Android Lollipop 5.0.2 ZenFone 6 (A600CG) Intel Atom dual-core Z2580 (2.0 GHz)x86 PowerVR SGX544MP2 6.0 inches, HD 1280x720, IPS Corning Gorilla Glass 3 2 MP front13 MP rear 16 GB/32 GB 3300 mAh ZenFone 6 (A601CG) Intel Atom dual-core Z2560 (1.6 GHz) 3230 mAh
Second generation (2015) ZenFone 2
The ZenFone 2 was announced at CES 2015. The flagship phablet model (ZE551ML) launched with Android 5.0 Lollipop running ZenUI and has a 5.5" Full HD (1920×1080) IPS display. The phone is powered by Intel Atom Moorefield SoCs with up to 4 GB of RAM, a first for smartphones. The phone also includes dual MicroSIM card slots, 13/5 MP rear and front cameras, a non-removable 3000 mAh Lithium polymer battery, up to 16/32/64/128 GB of internal storage, and a MicroSD Card slot.
Additionally, Asus announced two other models of the Zenfone 2. The ZE550ML comes with a 5.5" HD (1280×720) IPS display, but otherwise features similar specifications to the ZE551ML. The ZE500CL, the low cost variant, comes with a 5" HD display, an Intel Atom Cloverview CPU, 2 GB of RAM, a single MicroSIM slot, 8/2 MP rear and front cameras, and a 2500 mAh battery.
The ZenFone 2 was launched in Taiwan on 9 March 2015 - followed by India,"Asus Zenfone 2 is now available in India" . tech4me.in. Retrieved on 7 May 2015. Japan,ASUSのSIMフリースマホ「ZenFone 2」国内版が発売 - AKIBA PC Hotline! IndonesiaZenfone 2 is available in ASUS Store Indonesia . ASUS Store Indonesia, some of their model are coming soon. and Thailand.
In July 2015, the ZenFone 2E was released in the United States as an exclusive prepaid AT&T GoPhone."ZenFone 2E (US, AT&T exclusive)" , Asus website, retrieved July 27, 2015
Deluxe editions was released in September 2015. It is basically a ZE551ML with extended memory and a special back cover dubbed "Illusion Case", which has a 3D polygonal pattern that gives it a more premium look and feel than the original ZE551ML. Other markets offered the Deluxe Special Edition with red bezels, extended 256 GB of memory and Intel Atom Z3590 2.5 GHz processor. Colors offered are white and blue with purple shade, while the special edition available in silver or carbon fiber pattern. It is priced at around $299 for the deluxe edition and $469 for the special edition.
The ZenFone 2 won the 2015 iF product design award for top design in innovation, ergonomics, and functionality.
ZenFone Zoom
The ZenFone Zoom was announced at CES 2015 and along with the ZenFone 2, is one of the first phones to offer 4 GB of RAM. The specifications are largely the same as the Zenfone 2, with the exception of the camera. It has a 13 MP at the rear along with 3× optical zoom and 12× digital zoom, Real Tone Flash, optical image stabilization and laser auto-focus. It is priced at around US$399 for the 2 GB version.
Variants Model Processor Processor Architecture RAM GPU Display Camera Internal Storage PlatformZenfone 2 Deluxe (ZE551ML)Intel Atom Z3590 (2.5 GHz, quad-core)Intel Atom Z3580 (2.3 GHz, quad-core)Intel Atom Z3560 (1.8 GHz, quad-core)x864 GB LPDDR3PowerVR G64305.5 inches, Full HD 1920×1080, IPS Corning Gorilla Glass 35 MP front 13 MP rear64 GB / 128 GB / 256 GB eMMC FlashAndroid 5.0 Lollipop; upgradable to Android 6.0 Marshmallow Zenfone 2 / Zenfone 2 Deluxe (ZE551ML) Intel Atom Z3580 (2.3 GHz, quad-core)Intel Atom Z3560 (1.8 GHz, quad-core) 2 GB / 4 GB LPDDR3 16 GB / 32 GB / 64 GB / 128 GB eMMC Flash Zenfone 2 (ZE550ML) Intel Atom Z3560 (1.8 GHz, quad-core) 2 GB LPDDR3 5.5 inches, HD 1280×720, IPS Corning Gorilla Glass 3 16 GB eMMC Flash Android 5.0.2 Lollipop; upgradable to Android 6.0 Marshmallow Zenfone Selfie (ZD551KL) Qualcomm Snapdragon 615 (1.5 GHz + 1 GHz, octa-core) ARM64 2 GB / 3 GB LPDDR3 Adreno 405 5.5 inches, Full HD 1920×1080, IPS Corning Gorilla Glass 4 13 MP front 13 MP rear 16 GB / 32 GB eMMC Flash Zenfone Max (ZC550KL) Qualcomm Snapdragon 410 (1.2 GHz, quad-core) 2 GB LPDDR3 Adreno 306 5.5 inches, HD 1280×720, IPS Corning Gorilla Glass 4 5 MP front 13 MP rear 8 GB / 16 GB eMMC Flash Zenfone 2 Laser (ZE601KL / ZE600KL) Qualcomm Snapdragon 616 (octa-core) 2 GB / 3 GB LPDDR3 Adreno 405 6 inches, HD 1280x720 IPS Corning Gorilla Glass 4 16 GB / 32 GB eMMC Flash Android 5.0 Lollipop; upgradable to Android 6.0 Marshmallow Zenfone 2 Laser (ZE550KL / ZE551KL) Qualcomm Snapdragon 410 MSM8916 (1.2 GHz, quad-core)Qualcomm Snapdragon 615 MSM8939 (octa-core) Adreno 306Adreno 405 5.5 inches, HD 1280×720 295ppi (ZE550KL); Full HD 1920×1080 (ZE551KL), IPS Corning Gorilla Glass 4 16/32 GB eMMC Flash Zenfone 2 Laser (ZE500KL / ZE500 kg) Qualcomm Snapdragon 410 (1.2 GHz, quad-core) 2 GB LPDDR2 Adreno 306 5 inches, HD 1280×720, IPS Corning Gorilla Glass 4 16 GB eMMC Flash Android 5.0.2 Lollipop; upgradable to Android 6.0 Marshmallow Zenfone 2 (ZE500CL) Intel Atom Z2560 (1.6 GHz, dual-core) x86 PowerVR SGX544MP2 5 inches, HD 1280×720, IPS Corning Gorilla Glass 3 2 MP front 8 MP rear 16 GB eMMC Flash Android 5.0 Lollipop; upgradable to Android 6.0 Marshmallow Zenfone 2E (Z00D) 8 GB eMMC Flash Zenfone Go (ZC500TG) MediaTek MT6580 (1.3 GHz, quad-core) ARM64 Mali-400 MP 5 inches, HD 1280×720, IPS Corning Gorilla Glass 4 8 GB / 16 GB eMMC Flash Android 5.1 Lollipop Zenfone C (ZC451CG) Intel Atom Z2520 (1.2 GHz, dual-core) x86 1 GB / 2 GB LPDDR2 PowerVR SGX544MP2 4.5 inches, FWVGA 450×854, TFT 0.3 MP front 5 MP rear 8 GB eMMC Flash Android 4.4 KitKatZenfone Zoom (ZX551ML)Intel Atom Z3590 (2.5 GHz, quad-core)4 GB LPDDR3PowerVR G64305.5 inches, Full HD 1920x1080, IPS Corning Gorilla Glass 45 MP front 13 MP rear32 GB / 64 GB / 128 GB eMMC FlashAndroid 5.0 Lollipop, upgradeable to Android 6.0 Marshmallow
Third generation (2016)
ZenFone 3 Asus unveiled the third generation ZenFone series at Computex Taipei on 30 May 2016. Some devices in the ZenFone 3 series (ZenFone 3 Max, ZenFone 3 Laser, ZenFone 3 Deluxe, and ZenFone 3 Ultra) use an aluminum frame body with no visible antenna lines and feature fingerprint sensors for easy unlocking. Each ZenFone 3 model has its own defining features. The ZenFone 3 uses 2.5D Corning Gorilla Glass on its front and rear panels. The ZenFone 3 Deluxe uses a Super AMOLED display and a Sony rear camera. The ZenFone 3 Ultra features a 4600mAh battery that can double as a powerbank for other devices with a 1.5A output. The ZenFone 3 Laser is notable for its low price, and the ZenFone 3 Max is notable for its large battery. The ZenFone 3, ZenFone 3 Deluxe, and ZenFone 3 Ultra use the USB Type-C connector. The third generation ZenFone series drops Intel while retaining Qualcomm and MediaTek as CPU suppliers.
ZenFone AR First unveiled at CES 2017, the ZenFone AR is the first smartphone to support the Tango augmented reality and Google Daydream VR platforms and to be offered with 6 or 8 GB of RAM. The ZenFone AR is equipped with a 23 megapixel camera with optical hardware that takes advantage of Tango applications and extreme performance for gaming and data. The camera module is similar with Nokia N8, C7 and X7.
Variants