I have based this model on my previous phone stand keyring ( https://makerworld.com/en/models/1220377-phone-stand-keyring#profileId-1237120 ) but made improvements for different phone models, many Android and Apple phones (Even an Ipad in landscape) have been tried and all are good! 

Supports all phones i have tried (at least 10 different models), Prints in place, no supports, less than 7g of filament!

I have tested using PLA and  PETG.