It is a brand new Samsung Android version 10 tablet with a receptacle for a regular SIM card and the usual green phone icon, so it is an app which comes already installed. In effect it is a 7 inch sized phone. I think the model is called SM-T295 and has a regular IMEI number.
To use it as a phone I first click on the screen icon, a white phone surrounded by green, which takes me to a page headed “Phone” with - Keypad. Recents. Contacts. at foot of screen. I then click on Keypad to get the dialling number layout. When I then dial a U.K. phone number the number is dialled out but almost immediately the screen is overlaid by a black covering with a padlock symbol in the center with the words “double tap to unlock” showing. So I now cannot get to e.g. the loudspeaker control which was on the screen effectively under the black cover. If I do actually double-tap the black cover disappears for about 5 secs then returns.
So I need to find a way of suppressing the padlock/ black screen.
11-30-2020 02:10 PM