Google Turns On Automatic Verification According to Google's official help page, Android phone number verification is now on by default. When a user sets up a device, Google verifies one or more phone numbers on it. It then adds those numbers to every Google account signed in on the device. Later changes follow the same rule. Any account or number added afterward links automatically.

U Mobile partners with Telenor Linx to offer SIM-based Phone Number Verification. The feature allows businesses verify users' mobile numbers without SMS OTPs.