XDA are too good....they are making different themes for samsung devices....we know we are getting oreo which will slow our devices somehow(if we talk about long term usage) and alternative is to use theme based on pie....n it is really cool complete...
J7 max users are eligible for android oreo ...n that too 8.1 with samsung experience ui 9.5(which completely changes the look n optimises the device) Some are saying its 25 july n some 13 july....but i hope we will get it in july......it has also cla...