My phone showing cable charging

[AnkitaG]

My phone supports fast charging but from last two days it's charging slowly and showing cable charging. Neither the cable nor the adaptor is damaged. I also tried to charge my phone with other adoptor and cable but nothing is in help. Before this problem I updated my software. I also tried changing my phn switched off and in ultra power saving mode but nothing happened. So what should I do?

[indiantrueindian]

1. What is your device name

2. Is the cable & adapter is original

[AnkitaG]

1. A21s 

2. Yes it's original 

[_TUSHAR_]

Sir,
May be yours phone sub board faulty that's why it is showing this and also there are chances that your cable is faulty, if your device is under warranty then go the service center to get the free solution for your problem,
But before doing so ,once try to clean your phones charging port with the help of tooth brush, may it works for you.

[Farhan56]

Change the data cable

[AnkitaG]

I also tried that.

[cs_member10]

Dear Samsung Member,

Greetings from Samsung Customer Support!

We acknowledge your query. Please visit this mentioned link to resolve  charging issue:-

https://www.samsung.com/in/support/mobile-devices/my-galaxy-device-is-not-fast-charging-how-do-i-fix...

In case the issue still occurs. Please visit the service center for a physical inspection of your device. You can locate your nearest service center with this given link:
https://www.samsung.com/in/support/service-center/

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support