# Using remote SIM reference apps

This section describes how to use the provided Remote SIM reference apps – remote-sim-daemon and
sap-card-provider. The remote-sim-daemon app will run on the device without a SIM, while the
sap-card-provider app will run on the device with a SIM. The two apps will communicate over a
standard IP Ethernet connection, providing the WWAN capabilities of the remote SIM card to the
device without a SIM inserted. Both devices are required to have support for the Telematics SDK and
to be connected to each other via Ethernet.

**Required Items**

It is assumed that both devices are configured to enable the necessary features to support Remote
SIM capabilities.

1. Set Up the Ethernet connection

> 
> 
> First, connectivity between the two devices needs to be established.

1.1 Disable Automatic Configuration IP Address

> 
> 
> Depending on the device type, it may be necessary to first disable the auto-config IP (169.254.x.x) address on both devices.
> 
> 
> brctl delif bridge0 eth0
>     Copy to clipboard

1.2 Configure the IP Address on Both Devices

> 
> 
> ifconfig eth0 192.168.1.2
>     Copy to clipboard

The device with a SIM can use 192.168.1.3.

NOTE: Depending on the device, it may be necessary to execute steps 1.1 and 1.2 again whenever
either device restarts or is disconnected, due to auto-config settings.

2. Run the Remote SIM Daemon in the Background on the Device Without a SIM

remote-sim-daemon &
    Copy to clipboard

The -d and -s flags can also be used for debugging purposes (use -h for usage instructions).

3. Run the Sap Card Provider on the Device with a SIM

sap-card-provider -i 192.168.1.2
    Copy to clipboard

Use the -i flag to provide the IP address of the device running remote-sim-daemon. The -d and -s
flags can also be used for debugging purposes (use -h for usage instructions).

Last Published: Jun 24, 2026

[Previous Topic
Using remote SIM manager APIs](https://docs.qualcomm.com/bundle/publicresource/80-PF458-1/topics/remote_sim_api.md) [Next Topic
Sending SMS](https://docs.qualcomm.com/bundle/publicresource/80-PF458-1/topics/send_sms.md)