Why my mobile LG Q6 is frequently SIM services are disbled and after restarting it's working fine

[0899]

My mobile LG Q6 SIM service are frequently disbling from upgrade Androide verision 7 to 8 and after restarting working fine. How can i fix it ?

 

[Rukbat]

You can't, your carrier has to. The SIM card is theirs.