Samsung Galaxy S6 a really great phone im using this phone since 1.5years ago truly samsung has win my heart with this device.Sometimes it may stuck but its worth and best samsung phone. One time in night the phone automatically went to the android rebooting updating and it was stuck for 30mins I was like what happen it was not getting start or any of the button were responsing but after it start and I was surpirsed I thought its time to go service center but it starter sunce that no problem occured