Every confusing term a contract or support chat can throw at you — translated into human.
cenioklo is an independent info site. Zero connection to Three, O2, Sky, EE, Vodafone or anyone else — their names only mark what a page is about. We never take payments, never see accounts, never ask for codes or card details. For anything about your bill or contract, your network's official line (printed on your bill) is the right call. Ours (020 3996 8779, standard landline rate) is for general guidance only.
| Term | Translation |
|---|---|
| 4G Calling / VoLTE | Calls over 4G — essential now 3G is off. Lives in call settings. |
| 5G+ / standalone | 5G on its own modern core, not leaning on 4G. Snappier where it exists; EE leads. |
| Deadlock letter | The network admitting in writing it can't fix your complaint — your early ticket to the free ombudsman. |
| eSIM | The SIM as a download instead of plastic. |
| Fair use policy | The clause that bends "unlimited" — abroad, on hotspots, on "endless" apps. |
| Host network | The real network a budget brand rents. Tesco's host is O2; SMARTY's is Three. |
| MVNO | Industry name for a budget brand on rented masts. |
| Not-spot | Somewhere with no usable signal — what satellite trials target. |
| OTP | One-time passcode. Share with no caller, ever. |
| PAC | The keep-my-number code. Free: text PAC to 65075. |
| Roaming | Using your phone abroad — each network's own rules now. |
| Spend cap | A free ceiling on surprise charges. Set it in the app today. |
| STAC | The fresh-number code. Free: text STAC to 75075. |
| Tethering / hotspot | Sharing phone data with a laptop — THE clause to check on unlimited plans. |
| Wi-Fi Calling | Calls over broadband when masts can't reach — the free fix for dead rooms. |
Ring us to talk through switching, coverage, complaints or anything on this site. We can't open accounts, take payments or speak for any network — but we can make it all make sense.
020 3996 8779 Standard landline rate (020) · usually inside your free minutes · we never ask for passcodes, bank or card details