Transmission fails quickly for the Sprint R850 Mobile Hotspot
This article troubleshoots issues related to quick transmission failures
Make sure that the mobile broadband device is properly connected to the PC or other device via Wi-Fi.
Signal reception might be poor. Check transmission where signal reception is good.
Restart the mobile broadband device.
Check the mobile broadband device battery level. If battery level is low, charge with AC charger. See Charge the Battery tutorial for directions on charging your device.