The E4 did really well in our looped video battery drain test lasting 14 hours and 20 minutes. That's about 25 minutes longer than its closest budget competitor, the Samsung Galaxy J3.
In testing, the processor fared better than its rival the Galaxy J3. See the chart below. The E4 surprised me handling everyday use really well. The camera is where I noticed the limits of the E4's processor. The time it took to process shots felt long. Though, when I played games like Super Mario Run, OK K.O.! and even Modern Combat 5, the only indication the E4 struggled was when the back got warm.
Sometimes cheap is cheap
The E4 has a modest display. It's fine indoors, but barely visible under direct sunlight.
But the rear camera is the E4's weakest point. When compared to the more expensive Moto G5 Plus, the E4's photos had less detail and dynamic range (the difference between the brightest and darkest parts of a photo).
But when compared to other super-cheap phones like the Galaxy J3, the E4 produces photos with more detail and a more realistic rendering. You should have no trouble using the E4 to fill up your social media feed with photo posts.
The E4 has a dedicated selfie flash which produces mixed results. When I used it on myself, my skin looked washed out, but when I took a group selfie the fill flash made everyone look good. This is a luxury you don't see in many phones in this price range, so it's a good option to have. Take a look at some of the shots I took with the Moto E4 in the gallery below.