My GS4 is currently not sending and receiving data, and if it does happen to load something it is at an extremely slow rate. Why won't the up and down arrows under the 4G LTE logo light up? Is Verizon currently experiencing trouble with their networks? I have tried shutting my phone down and powering back up. I have tried removing the battery and then powering back up, and I have tried activating then deactivating Airplane Mode and still I am unable to get data going.