when oreo update coming in my j7 2016 because after 28 mb update my phone facing many problems....slow charging problem is a very big problem..so plzz solve this problem

After 28 mb update samsung galaxy j7 2016 facing so many problems slow speed charging and volte issue is comingso internet and calls are not working properly

it is not a good sign of samsung companywhen you don't doing something about our volte and unable to makes problem it is very disappointed to all samsung usersbecause samsung is doing frodness(cheating)with samsung j7 6 users.so we hate you samsung