Mobile phone security software has relatively complete free downloads, Saipan and free.

I usually go to the Saipan forum of Vodafone to download software now. The forum is more selective, rich in content, and also has users' feelings and replies. My mobile phone is also from Nokia and Saipan. The best software I use is Vodafone's charge buster. In the past, mobile phones were always unreasonably charged, and some malicious software was hidden in themes, games and software, which we ordinary people could not tell at all. Install a charge-deduction buster, unless you voluntarily admit the payment behavior, it is impossible for all rogue software to steal the phone bill. This really solved the problem for me. I think this software is worth sharing with you.