It does refresh SOC if the vehicle is recharging.My i3 doesn’t refresh it’s SOC over the app. One measure only until you return to vehicle. It all has no vampire drain unlike the Tesla’s. You would think Tesla would have sorted that by now!
That is another great thing I love about my i3 you can leave it for weeks without concern.
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I've noticed that the State of Charge (SOC) on the app is no longer updating when our car is charging - I first observed this a few days ago (17/10/2019). It updates immediately when I unlock the car, but no longer in between locking and unlocking.