How many lines do you need?
Most carriers offer multi-line discounts for 2+ lines.
How much data do you need?
Most people use 5-10GB/month. Streaming video uses the most.
Do you need mobile hotspot?
Hotspot lets laptops and tablets share your phone's data. Pick heavy if you work or stream away from Wi-Fi.
Monthly budget per line?
MVNOs can save you 50-80% vs major carriers.