Unfortunately, I tried to reset my rooted device with avast antitheft, After the reset, I changed the SIM card, no alert was received, I send SMS command, no reply

Though, I still think there could be something missing, however, its better to have enough instruction on steps to take to be 100%sure that the device is secured, I love to use avast because it is currently the best having tried various other…I will appreciate any help in this regards. Thank all!