Prevention from telephone call

A telephone is prevented from a part of face touching on the telephone, and being cut off.
Moreover, since it is peeped into the partner under telephone call to someone and is troubled, it does not become precocious.
CallGuard hides a screen on the telephone and prevents malfunction by a tap.
Since the screen can set a favorite picture, and a color and the degree of penetration as liking, it is also possible to carry out the decoration of the screen under telephone call.
Moreover, if shield release can be carried out by horizontal Flick into a shield and it is under telephone call, it is possible to set up a shield by carrying out the tap of the shield button set up beforehand always.
Every terminal can operate easily.
Since I correspond if there are a case where it does not operate normally, and a request, please ask.
* Since a reply is impossible in case of the comment field of a market, please ask for problem solving.