CoComm DT250, front, in its charging base

Does the CoComm DT250 work on Tesco Mobile?

Works (on 2G)

Calls and texts work on Tesco Mobile using 2G. They'll stop working when 2G is switched off unless 4G calling gets enabled.

Last checked 15 October 2026.

How we worked it out

2G calls: The phone supports 2G and Tesco Mobile's 2G network is still on (Tesco Mobile uses O2's network).
4G bands: Shares 4G bands with Tesco Mobile: B1, B3, B20, B28.
4G calling: Tesco Mobile only enables 4G calling on approved phones, and we haven't confirmed this one.

Tesco Mobile runs on O2's network, so it uses O2's masts and bands.

About 2G: O2 plans to start switching off 2G in summer 2029.

About 4G calling: Tesco Mobile has a per-phone 4G calling checker.

Where to buy

Onedirect £125.99 checked 23 Oct 2026 · 65 in stock, 24/48h delivery. Business retailer, price incl. VAT.

Did it work for you?

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Could you make and receive calls? Yes No Sometimes

Did the phone show 4G calling (VoLTE) as on?

Look for a VoLTE or HD icon by the signal bars, or a 4G calling setting.

Yes No Don't know

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