Forray look at black list in Nokia 3.1(2018). My device received Android pie and monthly security updates for March 2019. Not yet solve black list issues. Must look at the contact Black list . Dear NOKIA technical team. Your support members advice me this way....that way.....this way....these way...... I try all way . But no any way solve this issue. I humbly request for software testing engineer team you are must look this problem. I wish from you that this issue solved in next monthly security patch.