Asus ZenFone

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.^[1]

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.

Asus announced the fourth generation ZenFone on August 17, 2017 (August 18, 2005 in RD). The line went under the name "ZenFone 4", which was previously used for the 4" and 4.5" variants of the first generation line. The main feature of the flagship ZenFone 4 is its dual lens camera, which enables wide-angle photography.^[55][56]

Asus unveiled the fifth generation ZenFone at the 2018 Mobile World Congress in Barcelona. The ZenFone 5 has a screen size of 6.2" with a 19:9 aspect ratio and bears a resemblance to the iPhone X. According to Asus, the new phone will have 10 new AI features.^[71]

In May 2019, Asus unveiled the ZenFone 6 (Asus 6Z) at a press event in Spain. The ZenFone 6 features a rotating camera in an attempt to reduce bezels and provide an all-screen front. There is a dual camera setup on the phone, which normally resides on the back, but rotates when needed to become a selfie shooter. Asus allows for the rotation of the Liquidmetal camera module to be controlled using a stepper motor.^[76] This allows users to stop the rotation midway to take photos at interesting angles and can take automatic panoramas. The company has also added fall-protection for the camera module, which will automatically retract the camera to its base position if the phone detects sudden movement.^[77]

The Asus ZenFone 6 prices starts at EUR 499 for the 6 GB + 64 GB variant, going up to 6 GB + 128 GB version will retail at EUR 559, and finally, the top-end 8 GB + 256 GB variant is priced at EUR 599. It was immediately available via the Asus eShop on that day and would start shipping from May 25. Asus has revealed that the phone will be offered in two colours – Midnight Black and Twilight Silver.^[78]

The ZenFone 6 was announced to be released in India on 19 June 2019 under the name Asus 6Z, due to a trademark ruling by the Delhi High Court against the sale of products branded "Zen" or "ZenFone" in conflict with Telecare Network India's Zen Mobile.^[79][80]

Asus revealed the ZenFone 7 and 7 Pro in August 2020 as the first ZenFone devices to support 5G while omitting the audio jack. The 7 is primarily differentiated from the 7 Pro by chipsets and memory options. Both phones retain the previous generation's rotating camera benefiting from a new motor. The module is larger and now houses a triple camera setup with the addition of a 3x zoom telephoto lens. The main sensor has been upgraded to 64 MP and can record video at 8K resolution. The ZenFone 7's display increases to 6.67 inches and switches to an AMOLED panel with a 90 Hz refresh rate. The fingerprint sensor has been repositioned from the back panel to the right edge, and is integrated with the power button. The battery capacity remains the same at 5000 mAh, but has faster 30 W charging. Both run on Android 10 using ZenUI 7.

On 12 May 2021, ASUS has announced ZenFone 8 (also known as Asus 8z in India^[86]) and ZenFone 8 Flip under the slogan "Big on Performance. Compact in Size." They are released later on 13 May 2021, features a Qualcomm Snapdragon 888 5G chipset, with Corning Gorilla Glass 6 (Victus in base ver.) protection and they support 5G. Their display design Samsung Super AMOLED screen with 120 Hz (90 Hz in Flip ver.) of refresh rate. ZenFone 8 Flip retains the current previous generation's camera but with improved performance, similar to ZenFone 8 compact. ZenFone 8 (also known as ZenFone 8 compact, ZenFone 8 mini) returns the cameras back to the same as ZenFone 5 (2018), but has Infinity-O display with 64 MP + 12 MP rear cameras similar to ZenFone 5. It has a 4000 mAh battery and includes IP68 water resistance and a fingerprint sensor on display.

Dimensions are H 146.5mm W 68.1mm D 9.4mm.

On 14 March 2024, ASUS has announced ZenFone 11 Ultra under the slogan "Expand Your Vision.", this time, ASUS only released one model, the aforementioned ZenFone 11 Ultra, dropping the small-sized phones due to poor sales coming from its predecessor. The phone was released to the market on 14 April 2024, with a Qualcomm Snapdragon 8 Gen 3 chipset, with Corning Gorilla Glass Victus 2 protection and support for 5G networks. The phone's display is an LTPO AMOLED screen with 120 Hz refresh rate that can scale down to 1 Hz at the barest minimum of standby time. Compared to its predecessor, the ZenFone 11 Ultra adds a 3x telephoto camera lens that was absent from the ZenFone 10 and trades in the gimbal sensors for a more unified block of camera sensors. It has a 5500 mAh battery and includes IP68 water resistance and an in-display fingerprint sensor, which was last seen on ZenFone 8 Flip.

Asus released its 12th generation of the Zenfone series, the Zenfone 12 Ultra, on 6 February 2025. This generation is demonstrating its AI camera capability as the product tagline is "AI, Snap in Style." Just like previous Zenfone generations, the Zenfone 12 Ultra is also equipped with the latest Qualcomm chipset, the Snapdragon 8 Elite, which powers its AI features in all aspects. It also has a Dual AI System,^[92] with both cloud AI and on-device AI, which allows the device to automatically run all those AI features online, offline, or sometimes combining both at the same time.