Why does my Samsung s9 keep dropping calls, sending failed messages, cannot load apps/browser and cannot video call when my internet says 4g but works perfectly fine when it says lte? It drops to 4g multiple times on the daily. I have factory restarted my phone, reset network connections on my phone and had my network reset through Rogers tech support (5 times now). My girlfriend and I share an account with 2 numbers. She has a Samsung s8 with the same issues. It has been doing this since February. How can this be fixed permanently?