Think twice before updating your rusty old iPhone 4s to the just-released iOS 8 because Apple's feature-packed upgrade makes its handset run most tasks about two times (or more) slower.
iOS 8 will slow down common tasks on the handset, including approximately two times slower launching of stock apps, almost three seconds longer booting and more, ArsTechnica reported Wednesday.
In addition to the performance hit, the three-year-old handset is incompatible with certain hardware-dependent iOS 8 features such as Handoff, AirDrop, the OpenGL ES 3.0 and Metal graphics run-time and more.