Help 9 months in - battery, headphones and USB cable not working..

[InGearX]

what can I expect Samsung repair center to do / change

after 9 months of use in travel and I'd say a few dozen cities ..

battery is not holding charge - if I will give it in .. will they wipe the device? or they have a way to test the battery?

headphones - right earphone is not working - what can I expect?

USB cable - cable at USB end is getting ripped / loose - sometimes fails to charge - what can I expect?

thank you ..