Earlier today my phone turned off on its own and continued to show the Samsung Galaxy S7 Edge screen repeatedly five times before I had to turn the phone on and back off again. Now just now it made a weird whirring sound and it had to be restarted in order to stop. Has anyone experienced any of these issues? Both of these have been a once off for me today and so weird. I don't know if I should take my phone in now or wait to say it is a once off and doesn't happen again