Why this alert comes in my smartphone

Generally two types of alerts are received in our mobiles. One is which comes as a flash and other which remains as notification and we can read it and take action as needed. Many people ignore the flash one as the flash type notifications disappears quickly. Sometimes, it is a matter for worry and could be a spammy element. The solution suggested for this problem is generally to uninstall the recent programs or apps as it can be an associated feature carried to your phone with them. After uninstalling them again install them from a reputed site like play store. This technique helps in getting rid of flashing and irritating notifications. If your phone is Apple phone then this problem can be solved by going to settings and then selecting notifications and then making the changes as required to enable or disable certain types of notifications.