Advice about Samsung phones, dual sim and international.

[ancientlight]

Hi all.

I need a new phone as my old samsung has stopped charging by port and I can't connect it anymore to my laptop.
I have been going over all the different phones , but would prefer to stick with samsung as I'm used to it.

I think as long as I'm able to also charge wireless , with a slot for a micro sd card , it should be good.
I would prefer also dual sim as I will be travelling .

So which phone should I get?
I just want something reliable that won't have any problems. 

Also, how to solve the problem that I now have with being unable to connect my current phone to my laptop (to transfer photos/movies)?

Thanks