To combat online frauds and scams, users must verify their account by SMS in order to place an ad. Users must have a local mobile number in order to place an ad on dubizzle as over 99% of the scams we have encountered on dubizzle have been placed by users outside of the UAE.
After you place your first ad, you will be asked to authenticate your account as shown below:
SMS must be sent using the same mobile number you've entered during your registration.
Make sure you are in the UAE and have enough credit for this service as there will be a "one-time fee of 2 Dhs/sms".