Got a couple of issues with my iPhone 6 Plus: 1) signal drops to one dot where it usually is 4 or 5 dots. I have to put the phone in airplane mode and then disable it to regain normal signal levels. 2) at home where my signal strength is usually 4 or 5 dots (I'm really close to the tower), the signal drops to one dot when I don't use the phone for while. Once I wake up the screen and start using the phone it jumps back to the normal 4 or 5 dots. The second issue has been going on for a while, not sure if it's normal? Running 9.3.3 with my latest carrier update 24.2. Im trying to figure if this a carrier issue or Apple hardware or Apple software. I'm not sure which one it is.