The independent answer.
Ofcom, the UK regulator, publishes a coverage checker for every UK network by postcode, built from the networks’ own data and Ofcom’s measurements. It is the honest way to answer the question, so that is where we send you.
Open Ofcom’s coverage checker →Outdoor coverage is usually better than indoor, and a predicted signal is a guide, not a promise. Thick walls, basements and the far end of the office are where predictions go wrong.
Wi-fi calling & VoLTE.
Supported on most modern handsets, so you can still make and take calls where the signal is thin but the wi-fi isn’t — at home, in the office, on the train’s wi-fi.
Try it without the risk.
Because there’s no minimum term, testing us is a month, not two years. Take an eSIM, keep your old SIM in the other slot, and see how it goes before you move your number across.
If it’s not right, leave on one month’s notice — nothing else to pay, no exit fee.
Somewhere we’re weak?
Tell us where — hello@syncerauk.com. We pass real reports on to the network rather than pretend coverage is perfect.
Happy with the signal?
Three plans, one decision — how much data you need. Sign up online in about five minutes, or at a Syncera stand in London.