Oppo A40 128GB Unlocked smartphone review

The Oppo A40 features a 2.0 GHz octa-core processor, 4GB of RAM, and 128GB of internal storage, expandable via microSDXC. It runs Android 14 and is powered by a 5100 mAh non-removable battery.

For network compatibility, it works with SIM cards that support the following frequencies:

SIM Card 1:

• 2G: GSM 850/900/1800/1900
• 3G: WCDMA Bands 800(B6)/850(B5)/900(B8)/1700|2100(B4)/1900(B2)/2100(B1)
• 4G: LTE Bands 700(B12/B13/B17/B28)/850(B5/B18/B19/B26)/900(B8)/1700|2100(B4)/1800(B3)/1900(B2)/2100(B1/B66)/2300(B40)/2500(B41)/2600(B7/B38)

SIM Card 2:

• 2G: GSM 850/900/1800/1900
• 3G: WCDMA Bands 800(B6)/850(B5)/900(B8)/1700|2100(B4)/1900(B2)/2100(B1)
• 4G: LTE Bands 700(B12/B13/B17/B28)/850(B5/B18/B19/B26)/900(B8)/1700|2100(B4)/1800(B3)/1900(B2)/2100(B1/B66)/2300(B40)/2500(B41)/2600(B7/B38)

Please check with your network provider for compatibility before purchasing.

This smartphone is compatible with GSM networks in the USA, like AT&T and T-Mobile. It will not work with CDMA networks such as Verizon, Sprint, or US Cellular. For specific compatibility with 2G, 3G, or 4G/LTE bands, please check with your carrier before buying.

It is a dual-SIM phone. Both SIM slots support a range of 2G, 3G, and 4G LTE bands, including:

• 2G: GSM 850, 900, 1800, 1900
• 3G: WCDMA B1, B2, B4, B5, B6, B8
• 4G LTE: B1, B2, B3, B4, B5, B7, B8, B12, B13, B17, B18, B19, B26, B28, B38, B40, B41, B66

The phone features a 6.67-inch IPS LCD display with a 720 x 1604 pixel resolution, protected by Panda Glass.

It runs Android 14 with ColorOS 14, powered by a Qualcomm Snapdragon 6s Gen 1 processor and Adreno 610 graphics.

It has 128GB of storage and 4GB of RAM.

The camera system includes a 50 MP main lens (f/1.8) with phase detection autofocus and a 5 MP wide-angle lens (f/2.2).