Does anyone know it there is an app that lets you go from 3G/CDMA to 4GLTE without going through all the settings? I live in a 3G area and work in a 4G area. I'm tired of manually switching from 3G to 4G **NOTE** Leaving phone on 4GLTE at home I get a data drop very frequently. Switching to 3G fixes it. Thanks in advance.