It has been established that the UAE mobile phone number format is a well-structured system, consisting of the country code, a mobile prefix allocated to the respective telecom service provider, and the subscriber's own number. A fully structured complete mobile phone number will ensure calls are routed properly and the service provider is identified with ease. The breakdown comprises the following:

Country Code
The country code for the UAE is +971. It is used when dialing the UAE from abroad and replaces the leading zero of the local mobile number. For example, a local number such as 050 123 4567 will be dialed internationally as +971 50 123 4567.

Mobile Prefix
The second part is the mobile prefix, which identifies the mobile service provider. In the United Arab Emirates, two major players remain: Etisalat UAE Phone Number Data and du. Each has been allocated a number of prefixes for mobile subscribers:
a) Etisalat usually uses 050, 055, 056, etc.
b) du uses 052, 050, 055.
While both Etisalat and du can have similar prefixes, like 050 or 055, they are still different telecom carriers, and the prefix can tell which carrier the subscriber is using. This becomes very important in many scenarios for both consumers and businesses when placing calls or trying to diagnose network issues.

Subscriber Number
After the mobile prefix, the mobile number contains a unique 7-digit subscriber number. This number is assigned by the telecom provider and guarantees that every mobile phone is uniquely identified. The subscriber number depends on the various carriers but usually goes up to 7 digits. Example:

+971 50 123 4567: Subscriber number is 123 4567.
Full Format
It would appear something like this, for example, for a complete mobile phone number in the UAE:

International format: +971 <mobile prefix> <subscriber number>

Note: While calling locally, one does not have to use the country code.
Keypoints to remember
The UAE Mobile No. is an exclusive 9-digit number comprising a mobile prefix and a subscriber number.
The number format includes a country code +971 while dialing from another country.
It is these first few digits, the so-called prefix, which immediately identify which telecom service provider a person is using, with the rest of the digits unique to an individual subscriber.
To sum it up, this is the format of the UAE mobile phone number; simple, yet structured, for good identification of the service provider, therefore good communication within the country and overseas.