VOXI was created by Vodafone and is fully owned by them, which means VOXI customers get the same reliable network coverage across the UK. We have physically tested both VOXI and Vodafone SIMs in the same phone and in the same locations to confirm this. The SIM you receive is even Vodafone branded, which reflects how closely the two services are linked.

Although we cannot check every part of the UK, we carried out a series of signal tests in different urban and rural locations. Using both SIMs side by side, we found identical results for call quality and data strength. In every area we tested, both networks showed the same number of signal bars, which strongly suggests that VOXI and Vodafone share exactly the same coverage footprint.

In busy towns and cities, we consistently received strong 4G and often 4G+ speeds. VOXI also performed well in rural areas where many networks struggle. Even indoors, we were able to make and receive calls without difficulty, and it was rare to lose signal entirely unless we went underground.

Overall, VOXI offers an excellent mix of UK coverage that should satisfy most users. Customers benefit from some of the best 4G availability in the country, and we were impressed by how consistently usable VOXI’s 4G remains in remote areas. In urban areas, it is even harder to find dead spots.