Best Mobile Comparison Sites UK 2026
Choosing a mobile plan should not take hours of research. Here are the best UK sites and services for comparing SIM-only deals, handset contracts and mobile switching — from specialist comparison sites to AI-powered switching services.
What to Look For
The right mobile comparison tool depends on what matters to you. If you want to find the absolute cheapest SIM-only deal and are happy to switch yourself, a specialist comparison site with granular filters is ideal. If you want personalised recommendations based on your actual usage and a service that handles the switch (including number porting), a switching service like Lodo is more efficient. If you are looking for a handset contract, check that the site covers the phone and network you want.
The Best Mobile Comparison Sites & Services
Lodo— AI-powered switching service
Analyses your usage patterns and recommends three personalised mobile plans. Handles the full switch including sign-up with the new provider, cancellation of the old contract, PAC code request and number porting. Available via web and WhatsApp.
- Strengths: Full switching automation, personalised recommendations, number porting handled
- Limitations: No handset deals yet — SIM-only and SIM-free focus
SIMOnlyDeals— SIM-only specialist
Specialist SIM-only comparison site with granular filtering by data allowance, network, contract length and exclusive promotions. Good for finding the cheapest deal for specific requirements.
- Strengths: Most detailed SIM-only filtering, exclusive deals
- Limitations: SIM-only only — no contracts with handsets; no switching service
Uswitch— Utilities comparison & switching
Covers SIM-only, SIM-free and handset contracts across all major networks. Some automated switching available for mobile. Also strong for broadband and energy.
- Strengths: Broad mobile coverage, some switching automation, cross-product comparison
- Limitations: No personalised recommendations; does not port your number for you
MoneySupermarket— General comparison platform
Covers SIM-only and contract deals from major networks. Useful if you want to compare mobile alongside broadband, energy or insurance in one place.
- Strengths: Multi-product comparison, broad provider coverage
- Limitations: Mobile is not the primary focus; no switching service
Affordable Mobiles— Handset contract specialist
Specialist in mobile handset contracts, particularly for flagship devices on contract. Often has exclusive offers not available elsewhere.
- Strengths: Handset contract deals, exclusive offers, newer phone models
- Limitations: Handset contracts only — no SIM-only; limited network range
At a Glance
| Service | SIM-only | Handset contracts | Switches for you | Ports number |
|---|---|---|---|---|
| Lodo | Yes | Coming soon | Yes — full service | Yes |
| SIMOnlyDeals | Yes | No | No | No |
| Uswitch | Yes | Yes | Partially | No |
| MoneySupermarket | Yes | Yes | No | No |
| Affordable Mobiles | No | Yes | No | No |
Frequently Asked Questions
- What is the best site for comparing mobile phone deals?
- For SIM-only deals, SIMOnlyDeals is the most specialist site with granular filtering. For a broader view including handset contracts, Uswitch and MoneySupermarket cover the most deals. For personalised recommendations with automated switching, Lodo analyses your usage and finds the best plan, then handles the entire process including number porting.
- Can a comparison site port my mobile number for me?
- Traditional comparison sites show you deals but leave number porting to you. Lodo handles the full switch including requesting your PAC code, coordinating with providers and resolving any issues during the porting process.
- Do mobile comparison sites show all networks?
- Most comparison sites show the majority of major networks, but coverage varies. Not every provider has commercial relationships with every comparison site. Lodo recommends plans from providers regardless of affiliate relationships, as its algorithm does not have access to commission data.