Nope, not much difference, because the product is made by one company only.
you can check google about features and specifications of this phone.
and yeah you can repair it in local shops,but i would suggest to go with the warranty because once you give it to repair in shops the company wont even touch your phone for repairing.
Don't charge it with any other charger other than the charger given by the company,because other chargers may damage your battery.
Hope you got what you wanted to.