I've been using my Sanyo Katana on the Sprint network for 2 years and I'm no where near ready to upgrade. I am seriously attached to this phone. Beyond just making calls, I can access the web, text, take and send photos. The reason I initially bought this phone was because it's small and flat. Whether it's in my pocket, purse, backpack, or anywhere else - it's slim and easy to carry. Texting and dialing without looking at the keys is easy because the key are not flush - they are seperated. This phone comes in multiple colors, so I could have the same phone as my roommate in two different...read full review »
I really haven't had any problems with it. I have been with Sprint for 10 years or more. I have changed my plans multiple times with no trouble. They are very helpful with any questions.