How to Use Mobile Network with Laptop

So I try and connect my phone and laptop via Bluetooth to share my mobile network with my laptop. It'll say connected on both devices after I pair and confirm pub but then one Second later my phone says it couldn't connect and whenever I retry it turns on for a nanosecond and says it can't connect. Laptop doesn't show them as connected either only paired. When I unpair and reconnect is when they do a initial connect, say connected then the cycle begins. Anyone know why this is?