How to use phone calls without code?
Yes. Go the Google Play and download this app. If it isn't exactly what you are needing, get back to me and I'll find something more appropriate for your needs. Is your phone rooted? That helps a lot when you are wanting to customize your device. You can find plenty of info at XDA-Developers.com  Here is your link to the app. If you need any thing else, just ask. https://play.google.com/store/apps/details?id=com.privacylock.guest&amp;hl=enk.