Waiting for AsyncStorage.getItem()

You can try either add a then after your getItem.

AsyncStorage.getItem("phoneNumber").then((value) => {
    this.setState({"phoneNumber": value});
})
.then(res => {
    //do something else
});

Or use await to wait the async operation to finish

var value = await AsyncStorage.getItem(STORAGE_KEY);
//use value to do something else.

try this option and you will not get the

Syntax Error: Await is a reserved word

async getData() {
    return await AsyncStorage.getItem("@App:KEY");
}

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