Same problem… my Samsung Galaxy A70 charge for a few seconds the it stops, the original cable seemed to stop working so i bought a new one it worked a few days now its like mentioned before… when i stick it to my laptop it shows the sign for charging but the battery percentage doesn´t rise or even fall sometimes even when i am in low energy mode… I´m on vacation in thailand for 6 more weeks i don´t want to buy a phone here or bring mine to a repair shop i really don´t know what to do