Activating Cape Service on GrapheneOS

Cape + GrapheneOS = Best in class mobile privacy.

Before you start: Cape activation must be completed in the owner profile. However, after activation is complete you can make use of Cape services in other profiles (i.e Calls, Text, Data usage). Graphene’s support for secondary profiles can vary between devices and carriers.

⚠️ Important Profile Requirements:

You must perform these steps from your Owner Profile.
The Cape app must be installed on the Owner Profile, as only the Owner Profile has permission to manage and control the eSIM.
IMSI rotation is only supported in the Owner Profile. Due to security constraints around carrier configurations within Graphene Secondary Profiles, if an IMSI rotation occurs while in a secondary profile, you may lose service until you switch back to the Owner Profile.

Step 1: Enable eSIM Management

Go to Settings → Network & Internet → eSIM Support.

Toggle on eSIM Support. This setting persists across device restarts. After turning on eSIM support, Graphene will require you to restart your device.

Step 2: Download the Cape app

Option A: Enable Sandboxed Google Play Services and Download the Play Store

Go to App Store → Search for Google Play Services → Tap Install.

*Note: Without Play Services you will not be able to receive Cape’s push notifications*

After installing the Play Store, search for "Cape Mobile" or click the button below to download the Cape app.

Option B: Access the Accrescent app directly from the GrapheneOS app store

Open the GrapheneOS App Store
Locate the Accrescent App and search for "Cape Mobile" and install.

If needed you can download and install the Accrescent Store APK directly from the Accrescent Store Website on your device. Scroll down and tap the "Download Accrescent" button.

Step 3: Activate Cape

After downloading the Cape app from the Play Store or the Accrescent Store, you can proceed through the checkout flow and begin the Cape activation process.

Troubleshooting Tips

If you are stuck on the "Preparing Your Device" screen, please ensure you have eSIM Management turned on in the owner profile.
If you are experiencing issues making calls or texts please check to see if the Adaptive Connectivity setting is OFF:
Go to Settings > Network & internet > Adaptive connectivity, and if it's on, please turn this option OFF.
If the eSIM installation process gets stuck on "Checking network info..." despite a stable internet connection, try enabling DSDS (Dual SIM Dual Standby), if supported by the device.
- Step 1: Open the Phone app and dial *#*#4636#*#* to access the testing menu.
- Step 2: Tap Phone Information.
- Step 3: Look for the option to Enable DSDS and toggle it on (if available).

Troubleshooting Call and Text Issues (Carrier Overrides)

If you suddenly experience "No Service" or an inability to make calls and send texts, your GrapheneOS device may have dropped its VoLTE connection. The Cape network requires VoLTE to maintain an IMS connection for calls and SMS.

Due to the privacy and security architecture of GrapheneOS, the operating system can sometimes override or drop these carrier settings—especially when switching between different user profiles. You can fix this permanently by manually forcing VoLTE and 5G capabilities on via your Owner Profile.

→ Read the full step-by-step guide to configuring Carrier Overrides here.

Additional Help

If you still need help activating your device on GrapheneOS, please reach out to Cape Support via the Help Center or directly through the Cape app.

For issues related to GrapheneOS settings or configuration, we recommend visiting the GrapheneOS community channels for additional guidance and support.

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