Is the cable a certified fast charge version / and or a Samsung original @alfiesmum
Also check the charging brick too by using another fast charge version / normal Samsung oem version.
Double check your charge settings.
Further troubleshooting steps such as >
- Clear Cache Files from the phone's System Partition Section > https://www.samsung.com/uk/support/mobile-devices/how-do-i-clear-the-cache-on-my-device/ You may need to insert your earphones or hook upto a powered On Laptop or use a Tv's USB Port to access the Clear Partition Section. This may help with lag or stutters as this clears the phone of old/unused or broken cache files.There is also a Repair Apps option in the Menu System too { Possibly excluding the s²⁴ Series of phone's }
- Back up and Factory Reset as a last resort.
- Check the phone's charging port for any build up of debris.
- There is a diagnostic test tool found in your Samsung Members App.
- A Samsung Service Centre can assess your phone.
If i can be of any further help please don't hesitate to ask 😎
Daily Driver > Samsung Galaxy s²⁵ Ultra 512Gb ~ Titanium Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "
