Ensuring that your Samsung device works correctly at all times, is very important. We thank you for providing such detailed informatiom about the service issues you're experiencing with data speed slowness, not being able to receive pictures via text, and apps not opening.
We also noted the troubleshooting steps you've completed and we thank you. Let's dig deeper into this matter. How long have you been experiencing these issues with your device? Have there been any recent changes to it? (e.g., software update, new apps downloaded, etc.) - RobertC_VZW
My wife and I are also both experiencing the same issues all with following every one of those troubleshooting steps mentioned and then some. Seems to have been since the latest system/security update.