As of 13 August 2026, AI can compare mobile phone contracts.

What to actually do

1. Hand it to a person

   The route this page recommends

   A person who owns the outcome does this end to end, worth it when the failure is dear.

2. Use a tool built for this

   Second choice

3. Do it yourself

   The distant third

   A chat interface, chat-fluent skill, and roughly 30 minutes until you can act on the result.

   How to actually do it

   1. Open the current offer pages and contract documents for each UK provider you are considering, and save the pages or download the documents.
   2. Write down your expected monthly data use, call and text needs, roaming destinations, coverage locations, handset requirement and maximum monthly budget.
   3. Paste the contract text or upload the documents into a chatbot, label each one clearly, and paste the prompt with your priorities filled in.
   4. Ask the model to cite the document section or provider page for every price, allowance, fee, increase and cancellation condition, and to mark missing information rather than infer it.
   5. Open each cited provider page and the final order screen, then compare the drafted figures and terms against them, including any later price increase, roaming limit, coverage statement and early termination charge.
   6. Remove any option with an unverified material term, choose from the remaining contracts based on your priorities, and save the final contract summary and order confirmation.

   Prompt

   Compare the UK mobile phone contracts below for me. Use only the information I provide or clearly sourced current provider pages. Do not invent prices, allowances, coverage, fees, dates or contract terms. If a detail is missing, say "not provided". Separate confirmed facts from assumptions.
   
   My priorities:
   - Maximum monthly budget: [£ amount]
   - Expected contract length: [months]
   - Typical monthly data use: [amount or unknown]
   - Need for unlimited calls or texts: [yes/no]
   - Need for roaming: [countries or no roaming]
   - Need for a new handset: [yes/no]
   - Important coverage locations: [locations]
   - Other requirements: [requirements]
   
   Contracts or offer pages:
   [Paste each contract, quotation or provider link here, labelled Contract A, Contract B and so on.]
   
   Create a table comparing the upfront cost, monthly cost, any stated annual price increase, contract length, handset, data, calls, texts, roaming, network or coverage information, activation or setup fees, cancellation or early termination terms, credit checks, fair-use limits and any other material condition. State whether each figure is an initial price or a later price, and show any calculation used for the total cost over the contract term without filling gaps with estimates.
   
   Then identify the best fit for my stated priorities, the cheapest option only where the prices are genuinely comparable, and the main trade-offs. Do not recommend a contract if a material fact is missing. List every point I must verify on the provider's current page or final order screen before buying, and include the exact source or document section for each important fact.

   Open it prefilled in ChatGPT or Claude, or copy it into Gemini, which takes no prefill link.