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Wifi Calling for Google Fi

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Tommy 2023-01-16 04:30:30 -05:00
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content/posts/android/Android Tips.md
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@ -146,6 +146,8 @@ GrapheneOS has the LTE only mode exposed in settings. You can set this by going
If your Android-based operating system does not expose this setting in the Settings app, or if you want to set your baseband modem to a less restrictive mode, dial `*#*#4636#*#*` then hit **Phone information**. Here, you can set preferred network type to just the generations that you intend to use. For example, if you only want to use 5G and 4G, you can set it to `NR/LTE`.
Depending on the carrier, you may need to enable additional network types for Wifi calling to work. For example, Google Fi requires WCDMA for this feature. Thus, if you want 5G, 4G, and Wifi calling for Google Fi, you need to set the network type as `NR/LTE/WCDMA`.
## Carrier Tracking
Carriers can track your coarse location via cell towers using the IMSI and IMEI broadcasted by your baseband modem. In order to avoid this type of tracking, you have to enable the airplane mode which would disable the baseband modem.