UK Roaming SIM

Unrivalled coverage across all UK networks

OptiSIM connectivity.

OptiSIM provides the most extensive mobile coverage in the UK. The service is delivered through a roaming agreement with all three major UK operators (O2, Vodafone, and EE). The special SIM card accesses an alternative network signal, should the primary network be unavailable for any reason, to ensure connectivity.

OptiSIM is available as a voice, voice & data, and data-only solution.

Connected globe
Network redundancy for business continuity planning
SIM card
No specialised equipment necessary - just a SIM card
Downloading data
Cost effective data bundles

Business continuity.

This service is invaluable whenever a network signal is unavailable. This could be due to temporary network problems, topography, or other obstacles affecting reception.

OptiSIM is ideal for any organisation that needs to stay connected 24/7, such as the emergency services, emergency planners, utilities and the security services. In the private sector, board members and crisis critical personnel, as well as employees operating in remote locations could benefit significantly from OptiSIM.


IoT connectivity by Cellhire

Cellhire transforms businesses with intelligent IoT SIM & eSIM solutions. Businesses can take advantage of a range of different levels of connectivity accessible worldwide.

Find out more

Talk to an expert

Find out how Cellhire can help support your business.

Please be assured we'll treat your information with the utmost care. View our for more details.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.