Last updated: March 2026 • Reviewed by Compare The Networks
Why Businesses Choose O2
O2 has built its business reputation on flexibility and customer service. While they are not the cheapest or the fastest, O2 consistently scores highest in customer satisfaction surveys and offers contract flexibility that other networks lack.
- Flexible contracts — switch plans, upgrade early, mix 30-day and fixed-term within one account
- Priority business support — dedicated business helpline with UK-based advisors
- O2 Priority perks — event tickets, weekly offers, and discounts for your employees
- Strong 4G coverage — 99% UK population covered, 5G expanding
- Samsung partnership — often the best Samsung handset deals for business
O2 Business Plan Comparison
| Plan | Data | Contract | Monthly Cost | Best For |
|---|---|---|---|---|
| SIM Only Starter | 1GB | 24 months | £8/mo | Light users |
| SIM Only Standard | 10GB | 24 months | £13/mo | Email & browsing |
| SIM Only Plus | 30GB | 24 months | £18/mo | Regular use |
| SIM Only Unlimited | Unlimited | 24 months | £25/mo | Heavy users |
| SIM Only 30-Day | Unlimited | 30 days | £30/mo | Flexible, no commitment |
| iPhone 16 + 30GB | 30GB | 24 months | £36/mo | Handset bundle |
All prices exclude VAT. VAT-registered businesses reclaim 20%. Annual RPI price increases apply.
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Compare O2 DealsO2’s Flexibility Advantage
O2’s contract flexibility is their biggest differentiator for businesses:
- Plan switching — move up or down data tiers mid-contract without penalty
- Early upgrades — upgrade devices before your contract ends (subject to terms)
- Mixed contracts — run 30-day rolling and 24-month fixed on the same business account
- Bolt-ons — add temporary data boosts, international minutes, or roaming packs as needed
This flexibility is particularly valuable for seasonal businesses, growing companies, and businesses with varied employee needs.
O2 vs Other Networks on Price
| Feature | O2 | EE | Vodafone | Three |
|---|---|---|---|---|
| Unlimited SIM Only | £25/mo | £19/mo | £16/mo | £10/mo Cheapest |
| Contract Flexibility | Excellent Best | Standard | Good | Standard |
| Customer Service | Top rated Best | Good | Good | Average |
| Employee Perks | O2 Priority | None | None | None |
| 5G Coverage | Growing | Widest | Growing | Good in cities |
O2 is the most expensive for unlimited data, but you’re paying for flexibility and service quality. If pure price matters most, see Three business deals or cheap business mobiles.
Who Is O2 Best For?
- Businesses that value flexibility — plan changes, early upgrades, mixed contracts
- Companies with varied employee needs — different plans for different roles on one account
- Businesses that want employee perks — O2 Priority as a retention benefit
- Samsung-focused businesses — often the best Samsung device pricing
- Customer service priority — UK-based business support with priority queuing
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Get Your QuoteWhy choose O2 for business mobiles?
O2 excels in flexibility (plan switching, early upgrades, mixed contracts), customer service (top-rated UK-based support), and employee perks (O2 Priority). They are the best choice for businesses that value service over rock-bottom pricing.
How much are O2 business mobile plans?
SIM only from £8/month (1GB) to £25/month (unlimited data). Handset contracts from £30/month. Prices are slightly higher than Vodafone and Three, reflecting the flexibility and service quality.
What is O2 Priority for business?
O2 Priority gives all O2 users access to exclusive deals, early event tickets, and weekly freebies. Businesses use it as an employee perk. Available to all O2 customers at no extra cost.
Does O2 have flexible business contracts?
Yes. O2 offers the most flexible business contracts of any UK network. You can switch plans mid-contract, upgrade devices early, and mix 30-day rolling and fixed-term contracts on the same account.