The demand for reliable and fast internet continues to grow, and mobile data plans UK July 2025 are meeting that demand with upgraded speeds, unlimited usage options, and highly competitive pricing. As more UK users rely on mobile data for work, streaming, social media, and gaming, top telecom providers have launched updated packages that are both affordable and flexible.
From students to remote workers, everyone is looking for value-packed data deals. Whether you need unlimited data, budget options, or the best SIM only deals, this July 2025 comparison will help you pick the right plan.
Top SIM Only Deals in July 2025
If you’re looking to keep your current phone and just switch plans, SIM only deals offer maximum flexibility. These plans usually cost less and come with great features like 5G access, free roaming, and data rollover.
| Provider | Plan Name | Data Limit | Price (Monthly) | Key Benefits |
|---|---|---|---|---|
| EE | Smart Unlimited | Unlimited | £28 | 5G + Apple Music free for 6 months |
| Vodafone | Unlimited Lite | Unlimited (10 Mbps) | £23 | Roaming in 83 destinations |
| O2 | Big Data SIM | 150 GB | £18 | Free access to Disney+ |
| Three | Data Booster | Unlimited | £20 | 6 months half-price offer |
| giffgaff | Always On Plan | Unlimited (384kbps after 100 GB) | £20 | Monthly rolling SIM plan |
These mobile data plans UK July 2025 reflect the best value for anyone who prefers not to be tied into long-term contracts.
Budget Mobile Network Plans with Generous Data
Not everyone needs unlimited data. If your usage is moderate but consistent, these mobile network plans deliver great speed and coverage:
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VOXI 30GB Plan – £12/month with endless social media usage
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Lebara 15GB Plan – £10/month with international minutes
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ID Mobile 50GB Plan – £15/month, includes data rollover
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Smarty 100GB Plan – £17/month with unlimited UK texts/calls
These internet plans are ideal for students, freelancers, and casual users who want affordable yet high-performing plans.
Key Benefits of UK Mobile Data Plans in July 2025
The updated mobile data plans UK July 2025 offer more than just fast internet. Here’s what users are enjoying:
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Wider 5G coverage in metro and semi-urban areas
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No mid-contract price hikes on SIM-only plans
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Data rollover on most mid-range plans
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No credit checks on many budget-friendly SIMs
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Flexible contract lengths from 30 days to 24 months
Whether you’re switching carriers or upgrading your current deal, these SIM only deals are designed to give you better control over your spending and connectivity.
Choosing the Best Internet Plan for You
When comparing mobile data plans UK July 2025, consider these factors before you commit:
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Data Limit: Go for unlimited only if you’re a heavy streamer or gamer
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Speed Cap: Some unlimited plans cap speeds at 10 Mbps or lower
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Coverage: Check the 5G availability in your area
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Roaming Options: If you travel often, choose plans with international coverage
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Bundled Apps: Some providers include access to platforms like Netflix, Disney+, or Spotify
Matching your usage pattern with the right plan is key to saving money and avoiding overcharges.
FAQs
Which is the cheapest SIM only deal with 5G in the UK right now?
Three and giffgaff currently offer 5G SIM only deals starting at just £20/month with unlimited data.
What’s the best mobile network for data speed in July 2025?
EE and Vodafone are leading in speed and reliability across major cities, according to latest UK network tests.
Are there any SIM only deals with free streaming services?
Yes, O2 offers Disney+ free for select plans, and EE includes Apple Music for up to 6 months on premium plans.
Do I need to switch my number when changing SIM plans?
No. All providers in the UK support number portability using a PAC code, so you can keep your existing number.
Is it better to go for unlimited data or a capped plan?
If you stream or work on mobile data daily, go for unlimited. Otherwise, a 50–100 GB capped plan is more cost-effective.
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