We all need to be careful with our phones because a lot of things are going on, we should be careful with the way we give our phones to strangers especially people that want to make calls because from there they can copy ur information on the phone with using some codes he * 565# to draw ur bvn and other information that u have on your phone
Secondly, its advisable that if anyone wants to call with ur phons , its advisable u give them credit to buy so they can call on their phone, pls be very careful with answering calls from unknown numbers , because of cases of strange death on phone ,
Finally , it would be best if u have true caller on your phone because it helps a lot, it brings the identity of people that call u
Have a great day guys.

Only your first and last point makes sense.
The second one no be am at all

You try
Thank you