Mayank Top 10 Best Asus Smartphones Under $400 – Are you looking for the Best Asus Smartphones Under $400? Trying to find the best budget smartphone, particularly in the US, is like finding a pin in a haystack. But thankfully, lots of companies are targeting the low-end market. And especially the Taiwanese Firm ASUS, which is releasing budget friendly smartphones regularly.
In the year 2018, this statement is more precise than ever, since it still is easy to find a best Asus smartphones under 400 dollars that can compete with the flagship phones from the last year. So, we tried to discover the most stable, with a decent camera, high performing, good display smartphones and assembled them into this complete list.
For those who are contemplating to opt for smartphones that are fairly priced, Android-based smartphones are the best alternatives to look at. Not everyone has a high budget for a phone. Though smartphones are available in various price ranges, the best phones under 400 dollars is a right price category to look at. With this price range, you will get the best of features and a phone that will last you a couple of years before you are ready to splurge on the next level of mobile technology advancement.
So, check out our article of Top 10 Best Asus Smartphones Under 400 Dollars below.
Top 10 Best Asus Smartphones Under $400
Read: Top 10 Best Samsung Smartphones Under $100 Dollars
ASUS ZenFone 5 (ZE620KL) 4GB / 64GB 6.2-inches Dual SIM Factory Unlocked - International Stock No Warranty (Midnight Blue)
Amazon.com - Dual Nano-SIM (4G + 4G) ; 3G WCDMA B1 / B2 / B3 / B5 / B6 / B8 / B19 ; 4G LTE B1 / B2 / B3 / B5 / B7 / B8 / B18 / B19 / B28 / B38 / B39 / B41 ; 4G LTE does not work in the US ; 3G works with AT&T and AT&T based GSM carriers ; DOES NOT work with Sprint, Verizon, U.S. Cellular and all other CDMA carriers ; LTE compatibility: This is international stock, varies per carrier (ensure to check with your carrier before purchase)
ASUS ZenFone 5Q (ZC600KL) 4GB/64GB 6.0-inches Dual SIM Factory Unlocked - International Stock No Warranty (Midnight Black)
Amazon.com - Dual Nano-SIM (4G + 3G) ; 4G LTE does not work in the US ; 3G works with AT&T and AT&T based GSM carriers ; DOES NOT work with Sprint, Verizon, U.S. Cellular and all other CDMA carriers ; LTE compatibility: This is international stock, varies per carrier (ensure to check with your carrier before purchase)
- Qualcomm SDM630 Snapdragon 630 Octa-core 2.2 GHz Cortex-A53 CPU ; 64GB ROM, 4GB RAM ; Supports microSD, up to 2 TB (dedicated slot) ; 3300 mAh battery.
ASUS ZE554KL-S630-4G64G-B ZenFone 4 5.5-inch FHD IPS 4GB RAM, 64GB storage LTE Unlocked Dual SIM Cell Phone, US Warranty, Midnight...
Amazon.com 
ASUS ZenFone Max Plus (ZB570) - 5.7” 2160x1080 - 3GB RAM - 32GB storage - LTE Unlocked Dual SIM Cell...
Amazon.com - 5.7-Inch FHD IPS (1920 x 1080) display Full View Display
- MediaTek MT6750T Octa-Core SOC - 1.5GHz
- 3GB RAM / 32GB Storage. Bluetooth V 4.0
- 4130mAh Battery (Phone functions as power bank with included reverse charging cable)
- 8MP Front Camera / 16MP + 8MP Dual Wide-angle Rear Camera
- Dual Nano SIM slots (SIM Slot A supports 2/3/4G – SIM Slot B supports 3G/2G voice)
ASUS ZenFone 3 Zoom ZE553KL 4GB RAM / 64GB ROM 5.5-Inch 4G Dual SIM FACTORY UNLOCKED International Stock No Warranty...
Amazon.com 
ASUS ZenFone 4 Selfie Pro (ZD552KL) 4GB / 64GB 5.5-inches Dual SIM Factory Unlocked - International Stock No Warranty (Deepsea...
Amazon.com - 4G LTE Dual SIM (4G does not work in the US); 3G works with AT&T; DOES NOT work with Sprint, Verizon, US Cellular and all other CDMA carriers; LTE compatibility: This is international stock, several per carrier (ensure to check with your carrier before purchase)
- Qualcomm MSM8953 Snapdragon 625 Octa-core 2.0 GHz Cortex-A53 CPU ; 64GB ROM, 4GB RAM; Supports Micro-SD up to 2 TB (uses SIM 2 slot).
- Main Camera: 16 MP, autofocus, LED real tone flash; Front Camera: 24 MP, f/1.8.
ASUS ZenFone 3 Ultra ZU680KL 4GB / 64GB 6.8-Inch 4G LTE Dual SIM FACTORY UNLOCKED - International Stock (SILVER)
Amazon.com - 4G LTE Dual SIM; AT&T, T-Mobile & other GSM carriers ; LTE compatibility: This is international stock, varies per carrier (ensure to check with your carrier before purchase); DOES NOT work with Sprint, Verizon, U.S. Cellular and all other CDMA carriers.
- Qualcomm MSM8976 Snapdragon 652, Quad-core 1.8 GHz Cortex-A72 CPU
- 64GB ROM, 4GB RAM; Supports Micro-SD up to200GB
- Main Camera: 23 MP, f/2.0, laser/phase detection autofocus, OIS (4-axis), dual-LED (dual tone) flash; Front Camera: 8 MP .
ASUS ZenFone 4 ZE554KL 64GB Midnight Black, Dual SIM, 5.5-inches, 4GB RAM, GSM Unlocked International Model, No Warranty
Amazon.com 
ASUS ZS550KL-S625-3G32G-SL ZenFone 3 Deluxe 5.5-inch 3GB RAM, 32GB storage Unlocked Dual SIM Cell Phone, US Warranty (ZS550KL-Glacier Silver)
Amazon.com - 5.5-Inch unlocked Dual SIM cell phone with IPS FHD display, 1080 X 1920 resolution
- Dual camera with 16MP/8MP, 0.03 Laser focus and 4K video recording
- Qualcomm S625. 3GB onboard memory and 32GB storage with microSD card slot (expandable up to 128GB)
- Quick Charge 3.0- 60% in 40 minutes with USB Type-C 2.0.ZenFone 3 Deluxe also has 300Mbps 4G LTE, rapid fingerprint security, and fast-charge technology that whizzes the battery level up to 60% in just 39 minutes. With its superb performance and superior power-efficiency as battery saver, you’ll shoot sharp photographs at stupefying speed, record 4K video with minimal battery draw.
Asus ZenFone 3 ZE552KL 64GB Sapphire Black, Dual Sim, 4GB, 5.5-inch, Unlocked International Model, No Warranty
Amazon.com - 64GB ROM, 4GB RAM; Supports Micro-SD up to 128GB, Qualcomm MSM8953 Snapdragon 625, Octa-core 2.0 GHz Cortex-A53 CPU, Main Camera: 16 MP, f/2.0, laser/phase detection autofocus, OIS (4-axis), dual-LED (dual tone) flash; Front Camera: 8 MP . 5.5 inches, Super IPS+ capacitive touchscreen, 16M colors
- Unlocked cell phones are compatible with GSM carriers such as AT&T and T-Mobile, but are not compatible with CDMA carriers such as Verizon and Sprint
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