Use a fluorescent leak detection system. The combination of an ultraviolet (UV) or blue light and fluorescent dyes allows you to find small oil leaks. Add the dye to your oil reservoir and let your engine idle for 10 minutes. With the overhead lights off, shine the fluorescent light over your engine.
FreedomPop is a wireless internet and mobile phone service provider based in Los Angeles, California. The company provides free mobile services including free data, text and voice and sells mobile phones, tablets and broadband devices for use with their service.
If you would like to keep your current number, you should be able to port it to Google Voice for a one time fee. Then, you can forward calls going to your Google Voice number (the one you ported) to the new FreedomPop phone number. FreedomPop has not made an announcement regarding this yet.