Generally, there is no direct way for someone to find your mobile number solely from your UPI ID. However, if your UPI ID is in the default format, such as "mobilenumber@bankname," it directly exposes your contact information. To protect your privacy, many apps, including Paytm, allow you to create a personalized UPI ID (e.g., yourname@ptyes or yourname@ptaxis), which hides your phone number during transactions.
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