Infinix Smart 4 has a 6.6″ display, up to 2GB RAM, up to 32GB storage, and a 4000mAh battery. It is a 4G LTE Android 9 Pie smartphone and has a 5MP selfie camera. At the back is an 8MP dual camera, which the manufacturer says is a dual AI camera. It is the successor to the Infinix Smart 3.
The Smart 4 has an expandable memory slot that supports microSD cards of up to 256GB. The popular waterdrop notch is present here on the display and there is support for Face Unlock. If you prefer using your fingerprint, and most people do, a fingerprint scanner is present at the back of the phone.