i had the same issue and after a lot of tries to replace the charger or the cable , i go to customer service and they told me after checking it that the problem in the charging chip and exactly in the IC of charge and they don’t have the IC but they have the chip of charging and after they replace it the charging works correctly but after 5 months the issue come back again and after checking the mobile again by the customer service they told me that the IC damaged again and they replace it again but the phone did’t work this time and by checking again by customer service they told me that the port of charge cable in the mother board is broken and they did’t have replace parts to it and my phone is still broken until now , and by searching internet about samsung galaxy A70 reviews , i found that a lot of customers have a lot of issues of this phone because of the poor and bad material that the company made the phone from