M30S restarts automatically and frequently

[Neel77]

I am using this M30S since last one year. Two days back I it hang up while I was using whatsapp. Thereafter it started rebooting every now and then. Took support through whatsapp from the official samsung whatsapp support. But problem not resolved. Plz help.

[cs-member13]

Dear Samsung Member,

Greetings from Samsung Customer Support!

To resolve your device hanging issue please visit this link: https://www.samsung.com/in/support/mobile-devices/how-to-restart-the-device-when-freezed-or-hanged/

For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support

[mahesh_reddy]

Unlock bootloader, root your phone and then underclock CPU by about 50%. 

Restarts are completely gone but there's a slight lag when multitasking.