I hate to have, in a Windows 10 Mobile‘s Start tile, the picture of a contact inside a circle: it reduces both the size and the visibility of the picture, … moreover it is, in my opinion, not very nice looking! Much better was the “old” Windows Phone 8.1 squared picture style!! Note that in a PC with Windows 10, if you pin a contact in the Start page and then you disable the animation (right click More -> Disable animation – IT: Altro -> Disattiva quadro animato) the image returns squared and there is no more the is no more the overlaid circle: however, unfortunately this option (that is a work around for not having a pinned contact inside a circle) seems not to be available in the mobile version of that operating system.
BUT I succeeded in some way to have the same feature even in Windows 10 Mobile … let’s go on!
Now, after having changed in the Settings -> Customization – Start – Show more tiles and changing the Lumia 950 default in order to have less tiles (that is bigger ones), I was surprised to have all the contact tiles I had in my Start page become squared (as I’d like!) … and they remains the same even when I turned back to have more tiles, as it was before by default!!
I thought that I finally found the way to have a squared contact tile as I’d like, even though the procedure was very strange, but when I tried to add a new tile for a further contact, it had again the picture inside a circle (while all the other contact tiles remained squared) and even trying to change again the more tiles or not option, does change nothing! So now I have the old inserted contact tiles with squared pictures (as I like) and the new inserted one again into a circle! Notice that this last one is a “very” live tile (as it was in the default phone configuration) and when the name of the contact appears, the image rotare anticlockwise and the upside of the circle picture goes out of the tile: very bad looking!!!
Do anyone let me know what is the way to let the contact tiles to be squared? I succeeded to do that in some way but I couldn’t reproduce how it happens 😦 . Note that now the squared contact tiles are not “so” live (as it was, anyway, in WP 8.1, only a label over the picture is shown somehow) while the new ones I can insert (that have a rounded picture) are “very” live tiles and the picture even rotate and go partially out of the tile (horrible!).

Contact live tile (now the old with squared picture and the new with a rounded picture … that rotate somehow when the name is shown!)

All the new contact tiles, inserted in the Start page, are inside a circle!