USSD Exploit Test
Check if your device is vulnerable but only if USSD is supported. If it is vulnerable then it'd be in your interest to take precaution to help mitigate such attacks, and there are apps on Google Play from vendors like Bitdefender which are supposed to tackle USSD exploitation. However, I doubt such attacks are prevalent anymore because these exploitation mitigation applications have not been updated for years.
You can also keep your Android device up-to-date with the latest updates to help keep it more secure, patching old and known but patched vulnerabilities, making you a harder target in general.