I compiled my multiplayer game (using MQTT server/client) at http://www.semaggames.nl/ElementsOnlineWeb/ to be an apk and made it available in the google playstore for download at https://play.google.com/store/apps/details?id=elements.online.v040 .
At some mobiles it works perfectly but it seems that especially newer ones do not want to connect to the server. I have one Samsung Galaxy S8 that when I use the app will not connect to the server but with the same mobile I can browse to the game and in the browser it does work. I have not all the phones in the world and find it very puzzling why on some devices it will not connect.
I already tried to use websockets as connection method but to no avail. Is there a permission request that should be done which I can not find? Anyone else recognizes this problem? Any help as usual is greatly appreciated.
The app has all access granted in the settings.