What is a cloud phone system?

A cloud phone system (also called hosted VoIP) routes your business calls over the internet rather than traditional phone lines. The system infrastructure is hosted in secure data centres, meaning you don't need on-site PBX hardware. You pay per user licence, calls are made via desk phones, mobile apps or softphones, and management is handled remotely — making cloud systems more flexible and cost-effective than traditional setups.

What is VoIP and how does it work?

VoIP stands for Voice over Internet Protocol. It converts your voice into digital data and transmits it over your internet connection, rather than traditional copper phone lines. Calls can be made from desk phones, computers, or mobile apps. For businesses, VoIP offers significant cost savings, greater flexibility, and a much wider range of features than analogue or ISDN lines.

How much does a cloud phone system cost?

Most cloud phone systems are priced on a per-user, per-month licence model — typically from £12 per user per month depending on the platform and features. There are no large upfront hardware costs and maintenance is handled remotely. Yellowcom provides bespoke quotes based on your user count, call volumes, and requirements.

Can I keep my existing phone number when switching to VoIP?

Yes. Yellowcom handles full number porting as part of every installation. Your existing geographic or non-geographic numbers are transferred to your new cloud system with zero disruption to incoming calls. The porting process is managed entirely by our team.

What broadband speed do I need for a cloud phone system?

A stable VoIP call requires around 100kbps of bandwidth per concurrent call — well within most business broadband connections. More important than raw speed is connection quality; low latency and minimal packet loss are critical for clear calls. Yellowcom includes a full VoIP connectivity assessment with every installation.

What happens to my phones if the internet goes down?

Modern cloud phone systems include built-in failover options. With iPECS Cloud, calls can be automatically diverted to mobile numbers or an alternative site if your main connection fails. Yellowcom also supplies business broadband with 4G/5G failover as an add-on, giving you a secondary connection that activates automatically.

Is a cloud phone system suitable for small businesses?

Absolutely. Cloud phone systems are particularly well-suited to small businesses — no large upfront costs, no hardware to maintain, and you only pay for the users you need. Systems like iPECS Cloud can start with as few as 2 users and scale as you grow.

What is the PSTN switch-off and how does it affect my business?

BT's Public Switched Telephone Network (PSTN) is being switched off in the UK by January 2027. All businesses using analogue lines or ISDN must migrate to VoIP or a cloud-based alternative before the deadline. In Ireland, a similar copper network migration is planned under ComReg's roadmap. Yellowcom manages the full transition for you.

What is the difference between cloud and on-premise phone systems?

With a cloud phone system, all infrastructure is hosted in data centres — you simply connect your phones via the internet. With an on-premise system, a PBX unit is physically installed on your site. Cloud systems require lower upfront investment, are easier to scale, and are maintained remotely.

Does Yellowcom cover the whole of the UK and Ireland?

Yes. Yellowcom supplies and supports cloud phone systems across Northern Ireland, Scotland, England, Wales, and the Republic of Ireland. We have offices in Belfast, Glasgow, and Dublin, with local engineers available for on-site installations and support — no offshore call centres.

Business Mobile Sims — UK & Ireland

Business SIM Only Deals UK & Ireland | Business Mobile Plans

Reduce costs with flexible Business SIM Only Deals UK & Ireland, built for companies that need reliable mobile connectivity without unnecessary handset contracts. Our business mobile plans UK and Ireland give your team dependable 4G/5G coverage, centralised billing, spend controls and the flexibility to scale as your workforce changes

Whether you operate across the UK, Republic of Ireland, or both, our set up can help your businesse stay connected while controlling costs and simplifying mobile management.

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What is a Business SIM-Only Deal?

Business SIM Only Deals for Growing Businesses in the UK & Ireland

A business SIM-only deal is a mobile plan designed for companies that already have handsets or want to separate devices from airtime costs. For teams comparing business SIM only Ireland options or business mobile plans UK, SIM-only can reduce monthly spend while keeping users connected with calls, texts, data and roaming support.

That makes SIM-only an ideal option for businesses that want to reduce monthly costs, simplify admin, and stay flexible as teams grow or change. You can choose data allowances by user, pooled data across departments, roaming support for UK and Ireland travel, and spend controls to keep costs predictable.

No handset repayments. More flexibility. Easier scaling. Better cost control.

Office worker using business mobile plans with SIM only deals UK and Ireland

From £15/user/month SIM-only plans help reduce cost, simplify billing and keep your team connected.

For Growing Businesses

Choose us for your Business mobile plan UK or Ireland

SIM-only is not just for large mobile estates. In fact, it is often the smartest option for growing businesses that want professional mobile connectivity without unnecessary overhead. Choose Yellowcom for business mobile plans UK and Ireland businesses can scale easily, whether you need five SIMs or a larger multi-site mobile estate.

Keep existing handsets and cut monthly spend immediately
Add or remove users as your team changes
Mix light, medium and heavy data users under one business SIM-only plan
Support remote staff, drivers, engineers and field teams across the UK and Ireland
Stay in control with centralised billing, spend caps and usage reporting

cutting edge speed

Reliable 4G & 5G Business SIM Coverage Across the UK & Ireland

Our business SIM only plans are designed to keep your team productive with reliable 4G and 5G connectivity across the UK and Ireland. We help match your users to the right network and plan based on location, usage and business needs.

Real-time Monitoring

We track network performance live

Smart Handover

Seamless transition between 4G and 5G

Proven Reliability

Available across the UK and Ireland, delivering stable speeds for total business coverage.

Ultra High Speed

Ideal for high-data users and real-time remote collaboration in all major urban hubs.

Tailored to your business

Compare Business Mobile Plans UK & Ireland

Compare SIM-only plans, handset contracts and mixed mobile estates to find the most cost-effective setup for your team. Whether you need business mobile plans UK, business mobile plans Ireland or cross-border support, we can help you choose the right option.

What Matters To You	SIM-ONLY SIM-ONLY PLANS	HANDSETS HANDSET CONTRACTS	MODERN MIXED ESTATE
BEST SUITED FOR	Businesses with usable handsets	Teams needing new devices	Businesses with mixed needs
UPFRONT COST	£0.00	Variable (Low options)	Strategic allocation
MONTHLY COST	Lower monthly bills	Fixed higher payments	Bespoke blended rate
NETWORK CHOICE	Choice of 5 (Inc. EIR)	Choice of 5 (Inc. EIR)	Choice of 5 (Inc. EIR)
CONTRACT LENGTH	30 days to 24 months	24 to 36 months	Flexible blended terms

Regional coverage

Business SIM Coverage UK & Ireland | 4G & 5G Networks

Your team needs fast, reliable data to stay productive. Our business SIM only plans provide 4G and 5G coverage across the UK & Ireland, ensuring strong signal performance for calls, apps and remote working.

United Kingdom

Dominant UK
Connectivity

Vodafone

99.8%

4G Population

High

5G Density

For businesses comparing business mobile plans UK, reliable 4G and 5G coverage is essential for remote teams, field staff, drivers and office-based users who depend on mobile connectivity every day.

Republic of Ireland

Premium ROI
Infrastructure

Three

Eir

Vodafone

92%

National Reach

Urban

5G Centers

For companies looking for business mobile plans Ireland or business SIM only Ireland options, we can help assess coverage, roaming needs, data usage and monthly cost before recommending the right SIM-only setup.

Business SIM Only Features & Mobile Plan Benefits

Business SIM Only Features & Business Mobile Plan Benefits

Usage Audit & Assessment

We analyse your current mobile usage including calls, roaming, and data consumption to recommend the most cost-effective business mobile plans UK & Ireland.

Tailored Plan Matching

Every business is different. We build your Business SIM Only Deals UK & Ireland around how your team actually works.

SIM Deployment to Your Team

SIMs can be delivered directly to your office or remote staff across the UK & Ireland.

Ongoing Support & Billing Control

We manage everything from network queries to usage reviews - plus you get spend caps, alerts and monthly reporting.

What are Business SIM Only Deals UK & Ireland?

Business SIM Only Deals UK & Ireland are mobile plans for companies that need calls, texts and data without paying for handset contracts. They are ideal for businesses that already have devices and want lower monthly costs, flexible user management and centralised billing.

What’s the difference between business SIM-only and personal SIM-only?

Business SIMs offer centralised billing, flexible contracts, usage control, spend caps and multi-user management — all designed for teams rather than individuals.

Can we mix SIM-only and handset contracts?

Yes — most businesses do. We can blend both under one bill.

Can I get business mobile plans UK and Ireland on one account?

Yes. Yellowcom can help businesses compare business mobile plans UK and Ireland, including options for roaming, cross-border teams, pooled data and multi-network coverage.

Do you offer data pooling?

Yes. Use a shared allowance across your team to avoid overages and reduce under-used data.

What happens if someone leaves or changes role?

You can reassign the SIM instantly — no complicated contract changes.

Can I keep my existing business mobile numbers?

In most cases, yes. Your existing business mobile numbers can usually be transferred to your new SIM-only plan, helping your team switch without disrupting customers or operations.

Can we get a single bill for all mobile contracts?

Yes — one bill, one provider, one point of contact.

Got Questions About Business Mobile Contracts?

FAQs: Business SIM Only Deals UK & Ireland

Whether you’re cutting costs, upgrading connectivity or expanding your team, we’ll build a mobile plan that works.

03330 156 651

UK Contact Number

01263 5299

IE Contact Number

Business SIM Only Deals UK & Ireland | Business Mobile Plans