I have an Huawei mate 10 lite, and today it started randomly opening my browser and showing me scam sites. I have tried some anti-virus apps, but after a full scan they didn't find anything. I also looked at my apps, to see if anything suspicious app was there, but I didn't find any blank app/unknown app. The only thing I don't want to do is to factory reset my phone. Can you help me with my problem?