Hey Guys, Recently I have tried to clear partition cache through the android menu (Volume Up + Home Key + Power Button), but what I found is upon menu boot up the android robot falls and reports "No Command" and flashes "Error". Then when selecting wipe cache partition, the robot falls and reports "Error" then automatically reboots. This has happened on 2 devices (My original device and my replacement device). Verizon replaced the device because that error is abnormal (you don't say), additionally the tech rep said that they never step through the wipe partition cache (actually he admitted he didn't even know what it was), so they would never identify an issue. Anyways, Verizon called Samsung for me then conferences me in; after stating the problem Samsung replies they have not seen this on any of the other carrier devices and they have walked customers of T-Mobile, AT&T and Sprint through a wipe partition cache exercise without error. Samsung said I was the first to report this issue. (Interesting I am the first to report this issue but have it on 2 devices). After Samsung had no fix, they said it probably is the firmware and not the device so don't send it in for a new device because the problem will probably be on the new device as well. Samsung recommended me to go to the store and try it on a demo device (laughable, right) to determine if the error was repeatable on the demo device. Well, I called Verizon back explained to them Samsung's solution and was escalated to Level 2 Tech support. As we talked, he grabbed a S4 and I had to walk him through how to get to the menu (You got it, he didn't know how in Level 2 support). Once in, he experienced the same thing: Initial screen, robot falls and reports "No Command"; choose "wipe partition cache", robot falls and reports "Error" then it reboots. I think this may be related to the firmware update pushed July 8th, Samsung and Verizon does too. Samsung believes it is only Verizon's handsets that may have this issue. If this is true then us, Verizon Customers, may have bigger issues with our phones than other carriers of GS4 phones. The code related to Verizon options and changes for their network compared to the others is probably the reason their is a partition cache clear error. Also, the battery gets much warmer while charging since the update (this can become a major disaster, catch on fire); I have experienced this on both phones. Verizon customers, please check for the partition cache clear error and check to see if your phone gets hot while charging (post-firmware update). If you experience these errors report it to Verizon and to Samsung because we will need an update quickly to resolve these problems. If they don't have enough complaints then they will take their time resolving the issue because as Samsung told me today, it's not an issue if only 1 customer reports it even if it is multiple devices I have. Just a heads up. Sorry for the lengthy post!