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B2B · Mobile

SIM estate.One dashboard.

EE / Three / O2 / Vodafone. Mix the networks. One bill.

Voice + Data, data-only Mobile Broadband, and eSIM for business — across the four major UK networks, on a single ex-VAT invoice. Estate-management portal included. New starter live in 90 seconds.

  • Four UK networks
  • EU roaming included
  • eSIM ready
  • Pooled allowances
  • 30-day rolling option
Coming soon · Giant Mobile

Your VoiceCloud extension. In your pocket.

SIP-to-SIM. The mobile rings, the desk rings — same number, no app.

Giant Mobile launches as Giant's own-brand business mobile — physical SIM and eSIM, activated in minutes. The killer feature: attach a VoiceCloud extension to a real SIM card, so a desk-DDI rings the mobile natively over the cellular network. No softphone app, no SIP client, no second number — your business line, on your handset.

No contracts

Stay flexible. Cancel any month, no exit fee.

Fair prices

Pay for what you need. No CPI+3.9% mid-contract.

Great service

Real people, real support. UK office.

Full control

Manage your plan, your way. Live tweaks in-app.

Killer feature
SIP-to-SIM

Attach a VoiceCloud extension to a real SIM. Inbound calls to your business DDI ring the mobile over the cellular voice channel — not over data, not via a softphone. Outbound calls present your business CLI by default. Works in weak-signal areas because it's a native voice call, not a packet stream.

Already on Giant Mobile? If you're on our existing multi-network SIM (Three / O2 / Vodafone), you'll be able to transfer to Giant Mobile at launch — same number, no PAC dance, no extra cost. We'll email you when the time comes.

One email when SIMs ship. No spam, no monthly noise. Unsubscribe in one click.

See current tariffs

Existing tariffs from £24.98/mo continue running alongside Giant Mobile at launch.

90s

New starter on Monday. eSIM live by lunch.

HR raises the ticket, the eSIM email lands in the new starter's inbox, they scan the QR. No couriers, no SIM-in-post, no waiting for the post-room.

See eSIM flow
01Check the office postcode

Which network actually works at yours?

Live Ofcom industry data. Drop in your office postcode — we'll show all four networks' signal on a map and recommend the Giant business tariff that matches the strongest carrier there. The estate portal lets you mix networks per-line afterwards.

Live Ofcom industry data · indoor + outdoor signal by operator

02Live tariffs

Three buckets. Mix as you like.

Voice + Data is the default, MBB for routers / tablets / IoT, eSIM for new starters. Same dashboard, same monthly bill, ex VAT.

Voice + DataO₂
GB
O2 V&D Unlimited - Monthly
£23.32/SIM/mo ex VAT

See description

Voice + DataO₂
5GB
O2 V&D 5GB - Monthly
£18.99/SIM/mo ex VAT

See description

Voice + DataO₂
10GB
O2 V&D 10GB - Monthly
£19.50/SIM/mo ex VAT

See description

Voice + DataO₂
GB
O2 MBB - Monthly
£23.32/SIM/mo ex VAT

See description

Voice + DataO₂
2GB
O2 V&D 2GB - Monthly
£12.99/SIM/mo ex VAT

See description

Voice + Datavodafone
2GB
VF V&D 2GB
£14.99/SIM/mo ex VAT

Unlimited UK calls + texts

Voice + Datavodafone
5GB
VF V&D 5GB
£18.99/SIM/mo ex VAT

Unlimited UK calls + texts

Voice + Datavodafone
20GB
VF V&D 20GB
£29.99/SIM/mo ex VAT

Unlimited UK calls + texts

Voice + Datavodafone
GB
VF V&D Unlimited
£29.99/SIM/mo ex VAT

Unlimited UK calls + texts

Voice + Data3
GB
Business V&D Unlimited - eSIM
£20.82/SIM/mo ex VAT

Unlimited UK calls + texts

Voice + Data3
GB
Business MBB Unlimited - eSIM
£20.82/SIM/mo ex VAT

See description

Voice + Data3
GB
Business V&D Unlimited
£20.82/SIM/mo ex VAT

Unlimited UK calls + texts

Voice + Data3
GB
Business MBB Unlimited
£20.82/SIM/mo ex VAT

See description

Mobile Broadband3
GB
Business MBB Unlimited - eSIM
£20.82/SIM/mo ex VAT

Unlimited mins · Unlimited texts

Mobile BroadbandO₂
6GB
MBB - Monthly
£23.32/SIM/mo ex VAT

Unlimited mins · Unlimited texts

Mobile Broadbandvodafone
GB
Unlimited Voice & Data
£29.99/SIM/mo ex VAT

Unlimited mins · Unlimited texts

Voice + Data eSIM3
GB
V&D Unlimited
£20.82/SIM/mo ex VAT

Unlimited mins · Unlimited texts

Voice + Data eSIMO₂
GB
V&D Unlimited
£23.32/SIM/mo ex VAT

Unlimited mins · Unlimited texts

Voice + Data eSIMvodafone
GB
Unlimited Voice & Data
£29.99/SIM/mo ex VAT

Unlimited mins · Unlimited texts

Ex VAT · 30-day rolling option · pooled allowances across the estate

03Why move your estate

One supplier. Four networks. Zero faff.

SIM Estate Management

Self-serve portal: add, suspend, swap network, view bills, set fair-use alerts. One dashboard for every SIM in the company.

EU + global roaming

EU roaming included on V&D plans. International data passes per-trip. Global Premium add-on for sales teams who live on planes.

eSIM provisioning

New starter joins Monday — they get a QR by email, scan it, line live within minutes. No SIM in the post, no admin cupboard of plastic.

Network choice per SIM

Some staff want O2 coverage at home, some want Three for unlimited data. Pick the network per user — same monthly bill, three carriers.

SIM Estate Management · self-serve

Run your fleet
from one dashboard.

The portal that ships with every business mobile account. Live usage meter, suspend / restore, network sync, eSIM scanner, fair-use alerts. Same data the support team sees — but you don't have to ring them to use it.

  • Live usage liquid-meter

    Real-time data + minutes per SIM, with at-a-glance fair-use indicators.

  • One-click network sync

    Refresh connectivity remotely if a SIM's playing up. Saves a support call.

  • Adult-content bar toggle

    Turn the network-level filter on / off per SIM. Useful for over-18 contractors.

  • Inline eSIM scanner

    Scan / re-issue eSIM QR codes from inside the portal. No third-party app.

  • Last-seen network + country

    See where every SIM has actually been roaming, when it last hit a tower.

  • Fair-use alerts + thresholds

    Email + SMS alerts at 80% / 100% / 120% of bundle, per SIM or estate-wide.

04eSIM in 4 steps

New starter at 09:00. Live by 09:02.

The cleanest mobile-onboarding flow in UK B2B. No SIM in the post, no admin cupboard of plastic, no waiting for HR. The whole thing fits inside a coffee break.

    Step 01

    HR raises the ticket

    New starter's email + network preference goes into the SIM Estate portal. Takes 30 seconds.

    Step 02

    QR email auto-fires

    User receives a branded email with the eSIM QR + activation instructions inside 60 seconds.

    Step 03

    Scan it on the phone

    Open Settings → Cellular → Add eSIM → Scan. iOS + Android both supported, no app required.

    Step 04Done

    Live + on the network

    Line registers within minutes. Calls + texts + 5G data immediately. Pay-day-one ready.

Works on iOS 12.1+ and Android 9+ on supported carrier-unlocked devices. Older handsets fall back to a physical SIM, next-day delivery, no charge.

05Vs the high street

What you actually buy vs going direct.

Buying mobile from a single carrier (Vodafone Business / O2 Business / Three Business / EE Business) means one network, one bill, one set of features. Buying through Giant means choice across all four — plus the dashboard the high-street brands gate behind enterprise tiers.

What you get
High-street direct
Giant
  • Single bill across networks
    Yes
  • Self-serve estate portal
    Some
    Yes
  • Mix EE / O2 / Vodafone / Three
    Yes
  • eSIM provisioning by email
    Sometimes
    Standard
  • 30-day rolling option
    Rare
    Yes
  • EU roaming included
    Limited
    V&D plans
  • Account manager based in UK
    Variable
    Yes — UK office
  • Mid-contract price changes
    Hidden CPI+
    30-day notice, exit free
06Estate-level features

Two things SMB plans just don't do.

Pooled allowances

Each SIM's bundle pools into a single account-wide allowance. So 10 SIMs × 5GB = 50GB shared across the team. One heavy-data user doesn't push everyone into out-of-bundle. Fair-use alerts fire at the estate level, not per-SIM.

10
SIMs
×
5GB
/ tier
50GB pooled

Lost / stolen — instant suspend

Suspend any SIM in 5 seconds from the portal (or via support, 24/7). eSIM re-issue is instant. Physical SIM replacement is next-day, free of charge. Suspended SIM doesn't bill while frozen — saves the cost of paying for a phone that's at the bottom of the Mersey.

  • Suspend in 5 seconds, anywhere
  • eSIM re-issue: instant
  • Physical SIM: next-day, free
  • No billing while suspended
07Who buys it

Six sectors that live on the dashboard.

The customer base that actually uses estate management. If you recognise yours, the use-case below is what we typically wire.

Property + facilities

Multi-site retail, property management — site-manager SIMs across 50+ locations on a single bill

Field service

Engineers / installers / drivers needing reliable signal across postcodes — multi-network mix

Sales teams

BDMs on calls all day. Unlimited V&D, EU roaming for the trade-show circuit

IoT + M2M

Vending machines, EV chargers, smart-building sensors — Three M2M Unlimited £20.82/mo

Hospitality

Hotel groups, restaurant chains — duty-manager SIMs, swap-and-suspend on rota changes

Healthcare + care

Mobile field nurses, care-coordinators — adult-content-bar control, location reporting

30d

Rolling option. No 36-month tie-in unless you want one.

Most plans run 30-day rolling, 12-month, 24-month, or 36-month. Mix terms within the estate. Any mid-contract price change gets 30 days' written notice with the right to exit free — no buried CPI+3.9% clause.

Pick tariffs
08FAQ

Business mobile, straight answers.

Yes. Mix EE / Three / O2 / Vodafone SIMs across the estate as you like — same dashboard, same monthly bill, same support number. Useful when staff have a network preference (signal at home), or for resilience (don't put your whole field team on a single carrier).

Bring your fleet over to Giant.

Account setup, dashboard onboarding, number ports scheduled around you. One point of contact, so HR doesn't have to chase carriers.

Real customers

What people actually say.

5.0/5 from 74 customer reviews — same Giant team every one of them dealt with.

See all 74 reviews on Trustpilot

Or leave one of your own — opens Trustpilot in a new tab