After updating the phone the charging speed become slow Samsung must should look into this matter I don't know you guys are facing or not if you are facing so please comment Samsung must and should solve this problem.
Can you share your device model. And also would meed to have a check at the charging rate. You may use a 3rd party app Ampere to measure and share a screenshot. The root cause can identified on that.
Can you share screenshots like this after installing this app. it's safe to use and please share screenshots above around 65% in both charging and charger disconnected situation.
Please perform the below mentioned steps to resolve the issue:
1. Kindly follow the standard charging procedure. i.e please charge the device in switch off condition for a minimum of 10 minutes.
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
