Go to your phone's Settings > Apps > AiGo (or AiGo Driver) >
Permissions > Location. In AiGo, "While using the
app" is enough to see nearby taxis and set your pickup. In
AiGo Driver, choose "Allow all the time" — drivers
need this so passengers can still see your live position while the
app is in the background or your screen is off, not just while
it's open.