Facebook fixes iOS app battery drain issue, explains why it happened

Last week, we wrote about Facebook being one of the worst offenders when it comes to battery drain on iOS devices.

Now, the company claims it has fixed the issue in the latest version of its Facebook iOS app, offering an unusually detailed explanation as to why this happened

According to Facebook engineering manager Ari Grant, the problem was twofold: First, Facebook's app had something called "CPU spin" in its code.

"A CPU spin is like a child in a car asking, 'Are we there yet? Are we there yet? Are we there yet?' with the question not resulting in any progress to reaching the destination. This repeated processing causes our app to use more battery than intended," wrote Grant in a public Facebook post Read more...