I am in a hotel this week. The hotel wifi is pulling 3 down and 1 up. I decided to use my cellphone as a hotspot. The cell phone (Iphone7 using T-Mobile) is pulling 40 down and 21 up. I can see the Network settings on my laptop and it says I am secure and connected. But I am still pulling 3 down and 1 up on my laptop. Why am I not able to use the speeds from my cellphone, if I have a secure connection?