New Release Updated: Mar 2026

Asus ROG Phone II ZS660KL

$1204 (Expected Price)

Reviewed by the MobGadgets Tech Team

We analyze specs, compare pricing, and aggregate real-world data to bring you unbiased mobile reviews. Learn how we test.

Display 6.59" AMOLED

Processor Snapdragon 855+

Battery 6000mAh

RAM & Storage 128GB/256GB/1TB storage, no card slot

Full Specs

Should you buy the Asus ROG Phone II ZS660KL?

Reasons to Buy

Massive The Asus ROG Phone II ZS660KL is equipped with a massive 6000mAh battery, which is one of the largest capacities available in smartphones today. This impressive battery size ensures that the device can provide extended usage without requiring frequent recharging. With such a large battery, the ROG Phone II offers excellent battery life, allowing users to enjoy prolonged screen-on time and standby time. The device also incorporates power efficiency features and battery optimization settings to maximize battery performance and prolong battery longevity. Additionally, the ROG Phone II supports fast charging technology, enabling users to quickly recharge their device when needed. It also offers wireless charging options for added convenience. The battery of the ROG Phone II has received positive reviews for its endurance and overall performance, making it an ideal choice for users who prioritize long-lasting battery backup and power efficiency. battery life
Large 6.7" display for media
Excellent value at $1204

Reasons to Avoid

May be bulky due to large battery
Average camera performance in low light

Full Specifications

Also known as Asus ROG Phone2 ZS660KL

Network Technology: GSM / HSPA / LTE

Launch Announced: 2019, July 22. Released 2019, September Status: Discontinued

Body Dimensions: 171 x 77.6 x 9.5 mm (6.73 x 3.06 x 0.37 in) Weight: 240 g (8.47 oz) Build: Glass front (Gorilla Glass 6), glass back (Gorilla Glass 3), aluminum frame SIM: Nano-SIM + Nano-SIM - : RGB light panel (on the back)

Display Type: AMOLED, 1B colors, 120Hz, HDR10 Size: 6.59 inches, 106.6 cm² (~80.3% screen-to-body ratio) Resolution: 1080 x 2340 pixels, 19.5:9 ratio (~391 ppi density) Protection: Corning Gorilla Glass 6

Platform OS: Android 9.0 (Pie), ROG UI Chipset: Qualcomm SM8150 Snapdragon 855+ (7 nm) CPU: Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485) GPU: Adreno 640 (700 MHz)

Memory Card slot - No Internal: 128GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM
- : UFS 3.0

Main Camera Dual: 48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF
13 MP, f/2.4, 11mm (ultrawide) Features: Laser AF, LED flash, HDR, panorama Video: 4K@30/60fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS (except @240/480fps)

Selfie camera Single: 24MP, f/2.2, 0.9µm Features: Panorama, HDR Video: 1080p@30fps

Sound Loudspeaker : Yes, with DTS:X stereo speakers (2 dedicated amplifiers) 3.5mm jack : Yes
- : 24-bit/192kHz Hi-Res audio

Comms WLAN: Wi-Fi 802.11 a/b/g/n/ac/ad, dual-band, Wi-Fi Direct Bluetooth: 5.0, A2DP, LE, aptX HD Positioning: GPS (L1+L5), GLONASS, BDS, GALILEO, QZSS NFC: Yes Radio: FM radio USB: USB Type-C 3.1, accessory connector, OTG

Features Sensors: Fingerprint (under display, optical), accelerometer, gyro, proximity, compass

Battery Type: Li-Po 6000 mAh, non-removable Charging: 30W wired
10W reverse wired, QC4

Misc Colors: Matte Black, Glossy Black Models: ASUS_I001D, I001DA, I001DE, I001DC, I001DB, I001D, I001DD Price: About 1070 EUR

Tests Performance: AnTuTu: 398935 (v7), 483239 (v8)
GeekBench: 10923 (v4.4)
GFXBench: 40fps (ES 3.1 onscreen)
Display: 626 nits max brightness (measured)
Camera: Photo / Video
Loudspeaker: -19.5 LUFS (Excellent)
Battery (old):
Endurance rating 114h

Frequently Asked Questions

With its Dimensity 6300 chipset and 6GB of RAM, it handles everyday tasks and moderate gaming efficiently, though extremely graphic-intensive games may require lower settings.

Yes, to complement its massive The Asus ROG Phone II ZS660KL is equipped with a massive 6000mAh battery, which is one of the largest capacities available in smartphones today. This impressive battery size ensures that the device can provide extended usage without requiring frequent recharging. With such a large battery, the ROG Phone II offers excellent battery life, allowing users to enjoy prolonged screen-on time and standby time. The device also incorporates power efficiency features and battery optimization settings to maximize battery performance and prolong battery longevity. Additionally, the ROG Phone II supports fast charging technology, enabling users to quickly recharge their device when needed. It also offers wireless charging options for added convenience. The battery of the ROG Phone II has received positive reviews for its endurance and overall performance, making it an ideal choice for users who prioritize long-lasting battery backup and power efficiency. battery, it features standard fast charging capabilities to get you back up and running quickly.