The question might seem to answer itself, but the real-world issues to consider are heat generation and decreased battery life between charges. After all, some phones struggle with these problems at stock speeds set by manufacturers.

In reality neither issue is necessarily a game stopper, but could become annoying.

Although warnings are always given about , most PCs get away with it provided adequate cooling is provided. Essentially, the faster a chip runs, the more heat gets generated.

Mobile phone processors are no different, although they rely on passive cooling, which is to say, heat dissipation through the cell phone case. Often the phone is cleverly designed to get rid of heat, but phones aren't guaranteed to do so when the processor is running at over capacity.

In most cases you can set upper and lower clock speeds for your phone, and the phone will scale between the two extremes depending on user demands. It's even possible to under-clock to stretch out battery life, although the phone may be punishingly slow to use.