One of the great things about the iPhone is that it doesn’t bombard you with pop-ups and other notifications about technical matters. However, there are times when you do want to be able to view how much RAM you have left, what your battery status is, how much load your CPU is experiencing and the status of the phone's various connections.
Thankfully, System Status Lite allows you to do all these things and doesn't cost a penny. The crisp user interface presents all this information in a clear and concise fashion with easy to understand graphic representations of Ram and battery levels. If you need to access to more information than what’s available here then you might want to upgrade to the paid for app, which costs £1.99. It covers extras such as kernel version, memory page statistics, routing table, system log and CPU cache information.
If you want detailed information on your handset's CPU, memory and battery, System Status Lite is one of the best options available in the App Store.