ASUS ZenFone 3 5.2" Dual SIM ZE520KL (3GB/32GB, Sapphire Black)

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Unlocked (what's this?)

What is an "Unlocked" phone?

Many mobile phones are designed to use a Subscriber Identity Module (SIM) card to store subscriber data. These SIM cards are issued by the carrier and provide voice & data service to the phone. "Locked" mobile phones will only recognize SIM cards from the carrier that originally provided the phone. Almost all mobile phones provided by local carriers are locked to that carrier’s network and cannot be used on other networks.

"Unlocked" mobile phones can use SIM cards from any carrier that supports the phone's operating frequencies. This makes them more convenient for switching carriers & traveling abroad. As many carriers also require customers to purchase pricey 2-year data contracts with new smartphone purchases, buying an "unlocked" phone can also be cheaper in the long run, as it allows customers to use "pre-paid" and "no-contract" SIM-card options or to switch to a new carrier when a cheaper, better plan becomes available.

  • HK$1,445 HK$2,745

  • Free Shipping Available

  • In Stock Now

Breath easy with EXPANSYS extended service plans.

You love your new phone so why don’t you protect it.

With our extended 12-month service plan your investment will be safe and secure and you can rest easy.

Because life is unpredictable, extend your device protection from 6 months to 12 months and protect your device from mechanical and electrical failures that just sometimes happen.

For a minimum investment, you can ensure the safety and security of your purchase for an additional 6 months.

For just a few extra dollars each month; your device will always be safe and secure when you purchase the EXPANSYS Extended Service Plan. You can’t beat that value.

Why You’ll Love Our Extended Service Plans

  • Protects Your Device From Mechanical and Electrical Failure, Including Touchscreen Failure, Power-On Issues, Antenna/Wi-Fi Failure, & much more
  • Free Shipping On Returns
  • If we can’t fix your device, we’ll get you a replacement at no extra charge!

Don’t get stuck with expensive out of warranty repairs.  Get protected today!  

*Extended Service Plans must be purchased with device, and cannot be added once item has shipped
*Extended Service Plans cannot be refunded once item has shipped
*Extended Service Plans cannot be applied to b-stock, refurbished, or open-box items
*Extended Service Plans will not cover return shipping outside of the original delivery country
*Extended Service Plans do not cover accidental damage including damaged caused by drops, water, bending, or damage caused by installed applications or rooting

For complete terms and conditions of EXPANSYS warranty services, please click here.


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  • EXPANSYS Code: 291955
  • , EAN: 4712900465129
  • , UPC: 889349465127
  • , Mfr: AP_ZE520KL_BLK
  • , Brand: ASUS

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ASUS ZenFone 3 5.2" Dual SIM ZE520KL Features

What we like about the ASUS ZenFone 3 ZE520KL

  • 5.2-inch Full HD Super IPS+ display
  • Octa-core 2.0 GHz Snapdragon 625 processor with 3GB RAM
  • 16MP PixelMaster 3.0 camera with OIS & EIS

* Both SIM card slots support 3G WCDMA/4G LTE network band. But only one micro SIM card can connect to 3G WCDMA/4G LTE service at a time.

Unboxing Photos

Please check out our Facebook album for reference.

  • Shipping Weight: 0.38kg

Technical Details

  • System: Android 6.0 Marshmallow
  • Processor: 2.0 GHz / Octa Core / Qualcomm Snapdragon 625 MSM8953 / GPU: Adreno 506
  • Memory: Internal: 32 GB / RAM: 3 GB / Slot type: microSD / Max. slot capacity: 200 GB
  • Display: 5.2" / FHD Super IPS / Resolution: 1920 x 1080 pixels
  • Camera: 16 MP / PixelMaster / Flash: Dual Real-tone LED / Laser focus / Video: 4K UHD / Front: 8 MP
  • Network: 4G: LTE Band 1/2/3/5/7/8/18/19/26/28/38/39/40/41 / 3G: 800/850/900/1900/2100 MHz / GSM: 850/900/1800/1900 MHz
  • SIM card: Type: micro-SIM (SIM 1), nano-SIM (SIM 2) / Slot: Hybrid dual SIM (Optional: microSD)
  • Wireless: Bluetooth: 4.2 EDR + A2DP / Wi-Fi: 802.11 a/b/g/n/ac
  • Connection: Jack 3.5 mm / Type C with USB 2.0 connector
  • Sensors: Accelerometer, Ambient light sensor, Digital Compass, Fingerprint, Gyroscope, Hall sensor, IR sensor, Proximity, RGB sensor
  • Battery: 2650 mAh (Built-in)
  • Weight: 144 g
  • Dimensions: 146.87 x 73.98 x 7.69 mm
  • In the box: ASUS ZenFone 3 ZE520KL, ASUS headset, ASUS USB Type C to Type A cable, ASUS AC adapter, Documentation

User Reviews

  • by Anonymous
  • Wednesday, 2 August, 2017

Asus ZE520KL

Great mobile for the price and fast delivery. Has all I need and have changed from Samsung Galaxy Note Edge to this. Good communications. Will purchase from Expansys again for my son soon.

  • by aasif afzal
  • Saturday, 15 July, 2017

Perfect as always

I am a old customer of expansys I bought lot of items from them whatever I bought from expansys I Naver had any single problem with the items even its B stock I simply love expansys Thanks expansys

  • by David
  • Sunday, 13 November, 2016

Great phone

When I first started shopping for a new unlocked cellphone, I was hoping for something around the range of 200-250$ MAX. But I ended spending the extra money on this phone, because most of the other phones in that price range didn't seem to be high quality. I've only had this phone for 2 weeks now, but the quality of the build is amazing and I'm happy to have bought it. The are only two non-issues I can think of : 1) A lot of useless apps installed. But those can just be uninstalled or disabled, no problem. 2) It's kind of slippery. Just had to take extra care of it while waiting for my case to arrive.

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