Switch between network providers in Project Fi

Dial *#*#344636#*#* This will popup a message to display current provider
Dial *#*#34777#*#* This will switch to the network to Sprint
Dial *#*#34866#*#* This will switch to the network to T-mobile
Dial *#*#34872#*#* This will switch to USCC (US Cellular)
Dial *#*#34963#*#* Network reset