Tag Archives: switch carrier

Google Fi Dialer Codes

Here are a list of dialer codes that can be used with Google Fi.  These codes shouldn’t be used unless you are aware that they may impact the way your Fi phone switches between carriers.

Carrier Selection

The following options are only available for “Designed for Fi” phones. They will not work on the iPhone or “Compatible with Fi” phones because they are T-Mobile only.  See which class of phone you have here.

Alpha Code Dialer Code Description
FI AUTO *#*#342886#*#* Set carrier selection to automatic.
FI NEXT *#*#346398#*#* Select Next Carrier
FI SPR *#*#34777#*#* Select Sprint for 2 hours
FI TMO *#*#34866#*#* Select T-Mobile 2 hours
FI USC *#*#34872#*#* Select US Cellular 2 hours
FI SIMON *#*#3474666#*#* Select Three (UK only)

Service Codes

Alpha Code Dialer Code Description
FIXME *#*#344963#*#* Force reactivation
FI INFO *#*#344636#*#* Get information about the current network.
INFO *#*#4636#*#* Get general phone information.
DEBUG *#*#33284#*#* Phone Debug Options
PRL *#*#775#*#* Force download of Preferred Roaming List (Sprint)
PRL *228 Force download of Preferred Roaming List (US Cellular)
FI ROAM *#*#347626#*#* Turn on International Roaming