Oppo WATCH User Manual page 32

13 Standalone LTE Connectivity
eSIM is a virtual SIM provided by carriers. After activation, the watch can use
functions such as telephone, cellular mobile network, etc. without connecting to
a phone.
How to set up?
1. On the main page of the Wear OS app, tap Advanced settings > Mobile
network settings > Setup carrier.
2. Scan a valid QR code, or enter the serial code provided by the carrier, then
follow the instructions to connect to the carrier.
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C2 General