To fully verify your GCash account, you need to provide a valid ID and your personal details such as your name, address, and date of birth. Commonly accepted IDs include a passport, driver's license, or government-issued ID. Additionally, you may need to take a selfie for identity verification. It's important to check the GCash website for the most current requirements, as they may update their policies. If you're unsure about any documents, contacting GCash support can provide further assistance.