重裝就是進入OBI Account， delete device and follow the step add it back

我猜可能是你說的問題。因為每次delete the device and add it back, the device is working fine but sooner or later, it can only call out, no coming calls is in. 我再進去試試把自動升級取消後的效果，回來再匯報。

謝謝快慢大俠！