A phone contract that includes a handset is two products sold as one, and pulling them apart changes how the price looks.
The two components
Airtime — calls, texts and data.
And the handset, paid for over the contract term.
Which is effectively a loan, whether or not it is described as one.
Comparing properly
Total contract cost against the handset's cash price plus an equivalent airtime-only plan.
Which frequently reveals a substantial implied interest rate.
Split contracts separating the two are available from some providers and make this transparent.
The end-of-term problem
Where a bundled contract continues at the same price after the handset is paid for.
Which means paying for a device you already own.
Rules requiring notification at contract end and automatic reduction have been introduced in some jurisdictions.
Mid-contract increases
Annual rises linked to inflation measures plus a fixed percentage.
Which are written into terms and are frequently not noticed at signing.
Regulators in several markets have required clearer disclosure of these in cash terms.
Data allowances
Most people use substantially less than they buy.
Which is checkable in phone settings and in provider apps.
Buying to actual usage rather than to a comfortable margin generally saves meaningfully.
SIM-only plans
Airtime without a handset, generally on shorter terms.
Which is considerably cheaper and requires owning or separately financing a device.
Keeping a working handset for an additional year is one of the larger available savings.
Switching
Number portability is a legal right in most markets and the process is defined.
Which makes switching considerably easier than it once was.
Retention offers when cancelling are frequently better than advertised new-customer pricing.
What to check
Total cost over the term, what happens at the end, the increase clause and your actual data usage.
Network coverage
The most important factor in whether a plan is usable and the least emphasised in marketing.
Which is checkable through regulator-published coverage maps in most countries.
Coverage at home and at work matters more than headline speeds.
Virtual operators
Providers using another network's infrastructure.
Which frequently offers the same coverage at a lower price.
Traffic prioritisation during congestion can differ, and this is generally not disclosed.
Roaming
Charges vary enormously and have changed with regulatory arrangements between countries.
Which makes checking before travel worthwhile.
Local prepaid options or travel data plans are frequently far cheaper for extended trips.
Contract length
Longer terms reduce monthly cost and reduce flexibility.
Which matters if circumstances or coverage needs change.
Early termination charges are specified in terms and are frequently substantial.
Handset insurance
Sold alongside contracts and frequently duplicating home contents cover.
Checking existing cover before agreeing is worthwhile.
Family and multi-line plans
Discounts for additional lines on one account.
Which can be substantially cheaper per line.
They also create a single point of contract commitment across several people.
Trade-in and upgrade programmes
Returning a handset partway through a term for a new one.
Which resets the payment period and is generally more expensive over time.
Comparing the total cost across an upgrade cycle against keeping a handset longer is revealing.
Unlocking
Handsets are generally sold unlocked or must be unlocked free on request in many jurisdictions.
Which is a legal requirement in several markets.
An unlocked handset allows switching without replacing the device.
Refurbished handsets
Combined with a SIM-only plan, frequently the cheapest route to a recent phone.
Which requires paying more upfront.
Reviewing annually
Checking usage and comparing plans once a year takes under an hour and frequently saves meaningfully.
The core calculation
Handset cash price plus airtime-only cost, compared against the bundled contract total.
Which reveals what the credit actually costs.
Doing it once for your own situation is more informative than any general advice.
The largest saving available
Keeping a working handset for an extra year or two on a SIM-only plan.
Which requires nothing except not upgrading.
A closing note
A bundled contract is a phone loan wrapped in an airtime plan, and pulling the two apart is the single most useful thing anyone can do before signing one.
The second most useful is checking what you actually use rather than what feels comfortable to buy.
Social and low-cost tariffs
Reduced-price plans for people receiving certain benefits exist in several markets.
Which are consistently underclaimed relative to eligibility.
Providers publish eligibility criteria and the application is generally straightforward.
Data-only and secondary lines
Tablets, watches and backup lines are frequently cheaper as add-ons.
Which is worth comparing against standalone plans.
Contract disputes
Complaints processes and telecoms ombudsman schemes exist in most jurisdictions.
Which are free to use after the provider's own process is exhausted.
The short version
A loan and a service sold together, priced so the loan is difficult to see.
Which the split-contract comparison exposes in about two minutes.
Regulator coverage maps and complaint statistics are published and are the most useful comparison inputs available.