Gamma Mobile User Support and Training.

Gamma Mobile

Getting Started

Gamma Mobile service is built exclusively for the UK business market; designed to deliver improved coverage for voice and data via your device that empowers, not hinders, conducting business while on the move.

Great population coverage
99% outdoor and 98% indoor


Network investment
Over £2 billion is being invested in the network to continue to improve reliability, speed and call quality.

Call and text with WiFi
Stay connected in areas with no signal


5G spectrum
With three times more 5G spectrum than any other UK network, to fully exploit the benefits of increased speeds, higher capacity and reduced latency.

You will receive a text with the settings to activate data on your handset. Accept them when they arrive.

If you do not receive this message, settings can be sent to your device.

Send data settings

For some devices the settings cannot be sent by text so you may need to manually enter Gamma in the data settings of your device by clicking below.


Manually setup data settings

Voicemail and call forwarding

The voicemail service will be set up automatically when your SIM card is activated.

The first time you call into your voicemail you will be asked to set up your PIN and record your name.

Information about the voicemail structure can be found here

To access voicmail call 07782333123 or use the short code 121 from your device

As standard all unanswered calls, and calls when you are busy or unreachable, are diverted to voicemail. Call forwarding to an alternative phone number can be added from your device settings menu or by calling the shortcodes.

Forward calls on these conditions: when busy, unanswered and out of reach

To set up
**004*[phone number]#

To switch off

To re-activate and forward to the same number as before

Forward calls unconditionally (your device will not ring)

To set up
**21*[phone number]#

To switch off

To re-activate and forward to the same number as before

Useful Contact Details

Customer services

0333 014 0333



0333 014 0333 (option 3)
[email protected]


Lost or stolen phone

0333 014 0333 (option 3)
Available 24×7

Provisioning queries

0333 014 0333 (option 3)
[email protected]
Monday to Friday 0900 – 1700hrs