So Network Vision is slowly but immensely improving the overall experience on Sprint. Luckily living in the Bay Area a large amount of this work has already begun and is continuing each day. For a while I was seeing improvement and loved Sprint for every moment. At the begging of this week all of this suddenly disappeared, being an avid reader of this site I assumed it was an upgrade and just continued on with my day. Now it's near the end of the week and no improvement whatsoever. Basically I would like to know if this is a device related problem (iPhone 4, iOS 6.1, PRL 51094) or if it's an network upgrade which I'll just ignore.
Calling Plus has proven to be more reliable than WiFi Calling for me. There have been more than a few times where I've had to turn off WiFi in the middle of a call and have it switch to LTE for the person on the other end to hear me clearly.