Slow speed on Nighthawk M1 MR1100-100NAS

[cmanthey]

I have a mobile phone contract that includes a second sim card which can be used for data. So I use the same contract for my phone as for the nighthawk router. When I started using the nighthawk router I had a similar download speed with the router as with the phone, around 200 Mbits. 
Now after a few weeks the router only achieves 6 to 7 Mbits while the phone is still at above 200 Mbits, I measured at the exact same spot. The router is still in the same spot next to a window without any other electronical devices.

Firmware: NTG9X50C_12.06.39.00

[plemans]

Did you check with your mobile provider? 

Some plans limit your speed after a certain data usage thresh hold has been reached for their hot spot plans.