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.
99% outdoor and 98% indoor
Stay connected in areas with no signal
Over £2 billion is being invested in the network to continue to improve reliability, speed and call quality.
With three times more 5G spectrum than any other UK network, to fully exploit the benefits of increased speeds, higher capacity and reduced latency.
FAQ
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 voicemail 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 conditionally:
when busy, unanswered and out of reach
To set up
**004*[phone number]#
To switch off
#004#
To re-activate and forward to the same number as before
*004#
Forward calls unconditionally
Your device will not ring.
To set up
**21*[phone number]#
To switch off
#21#
To re-activate and forward to the same number as before
*21#
Customer Services
0333 014 0333
Lost or stolen phone
0333 014 0333 (option 3)
Available 24×7
Faults
0333 014 0333 (option 3)
Provisioning queries
0333 014 0333 (option 3)
horizonmobileorders@gamma.co.uk
Monday to Friday 0900 – 1700hrs
