Look at any price list for international calls and you will see the same thing: a minute to one country costs a fraction of a cent, a minute to another costs several times more, and calling a mobile is dearer than calling a landline in the same country. Those differences are not random. They come from how phone networks charge each other, and understanding them helps you avoid surprises on the bill.
Retail price and wholesale cost
The price you see is a retail rate. Behind it is a chain of wholesale costs. When you call someone abroad, your provider hands the call to the carrier that serves that destination, sometimes via one or more carriers in between. Each step has a price per minute, and the sum plus the provider's margin is what you pay.
Termination: the cost of reaching the last network
The biggest part of the cost is usually termination: the fee the destination network charges to deliver the call to its own customer. Regulators in some regions limit termination fees, and in others they are set by the market, which is why they vary so widely. Mobile networks usually charge more than fixed ones, because mobile termination has historically been more expensive.
Routes and quality
Between your provider and the destination, a call can take different routes:
- Premium routes use well-connected carriers and aim to deliver clear audio and keep the caller ID you set. They cost more.
- Cheap routes use lower-cost paths. They are fine for many calls, but audio can be poorer, setup slower and caller ID may be replaced by a generic number.
This is the main trade-off behind most "very cheap calls": the price is lower because the path is lower grade. A provider that publishes clear rates and describes what quality to expect is easier to judge than one that only advertises the lowest number.
How the prefix decides the price
Rates are attached to prefixes, the first digits of the number after the country code. Providers apply the longest matching prefix, so one country can have several prices at once:
| Type of number | What changes |
|---|---|
| Fixed line | Usually the cheapest price for the country |
| Mobile | Often several times higher than fixed |
| Special regions or networks | Some islands, satellite networks and territories have their own, much higher prices |
| Premium-rate and service numbers | Charged separately and can be very expensive; check before dialling |
Billing increments and fees
The rate per minute is only part of the picture:
- Increment. "1/1" billing charges per second. "60/60" rounds every call up to a full minute, so a 10-second call costs a whole minute.
- Connection fee. Some plans add a fixed amount to every call, which hurts short calls most.
- Minimum charge. A few services bill a minimum amount per call.
- Taxes. VAT and other taxes may be added, depending on where you live.
Pay as you go or bundle?
A prepaid, pay-as-you-go balance charges exactly what you use, with no monthly fee, which suits occasional international calls. A bundle or subscription can be cheaper if you call the same countries every week, but it can also turn into a fee you pay while you are not calling. Compare your realistic monthly minutes, not the headline price.
Check the rate before you call
- Write the number in full international format, starting with + and the country code. Our guide to dialling internationally shows how.
- Enter it in a rate checker. The Globfone Premium page includes one: type a destination number and it shows the current public rate before you place a call.
- Note the type of number (mobile or fixed) and any special prefix.
- Estimate the cost: rate per minute times the length of the call, plus any connection fee.
Ways to keep the bill down
- Call over Wi-Fi so that you do not add mobile data or roaming charges. See cheap international calls compared.
- Prepare what you want to say; per-minute billing rewards short, planned calls.
- For a quick message, a text can be cheaper than a call. Read how texting another country without roaming fees works.
- Check the prefix: a number that looks like a normal mobile may belong to a special range.
- Prefer providers that show their prices openly and let you top up in small amounts.
Free calling and paid calling
Globfone offers both. Globfone Free lets you make calls in a browser using small daily amounts of free Credits, supported by ads and limited to selected countries. Globfone Premium is the paid, pay-as-you-go service with no ads, wider country coverage and rates you can check beforehand. If you want to know how the technology works under the hood, start with VoIP explained.
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