Laatste update: 21 juli 2026

Choosing a SIM-only plan: these 5 steps will lead you to the perfect deal

The pitfalls of SIM-only subscriptions

Choosing a SIM-only plan sounds simple. You already have a phone, so why pay for a new one? You compare providers, choose the cheapest deal, and you're done. But things often turn out differently. That "cheap" plan suddenly turns out to be more expensive due to hidden costs. That promised coverage is disappointing in your area. And then you discover you're stuck with a two-year contract.

The biggest problem lies elsewhere: most people blindly focus on the lowest monthly price . While the real savings lie in cleverly combining your current phone with the right accessories . A good charger or power bank can extend your phone's lifespan for years. Just like a sturdy case from the same collection . This way, you'll not only save on your phone plan, but also on a new phone.

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Step 1: map your consumption

It all starts with a simple question: how much do you actually call, text, and use? Look at your bills from the past three months. Note the highest usage for each component. That will be your starting point.

Many people overestimate their data needs. They think they need at least 20 GB, while they only use an average of 6 GB. So first check your actual usage using your current provider's app. Pay particular attention to:

  • Calling minutes to Dutch numbers
  • Data bundle (you probably use Wi-Fi at home)
  • International calling (often a cost factor)
  • Roaming within and outside Europe

Step 2: compare providers wisely

The Netherlands has three networks: KPN, VodafoneZiggo, and T-Mobile. All other providers lease capacity from these three. This doesn't automatically mean the big three are better. Virtual providers like Simyo, Ben, or Youfone often offer more competitive rates.

First, test coverage in your area. Download coverage maps from providers and check your home and work location. A cheaper plan won't do much good if you can't get a signal at home. Also, ask friends and family about their experiences in your area.

Then compare not only the monthly price, but also:

  • Connection costs (can amount to up to 25 euros)
  • Costs for additional data bundles
  • Rates outside your bundle
  • Notice period and costs

Step 3: choose the correct contract duration

SIM-only contracts come in three versions: monthly cancellable, one-year fixed, or two-year fixed. Two-year contracts are the cheapest per month, but they are long-term. A monthly cancellable contract costs an average of 3 to 5 euros more per month.

Consider an annual contract as a happy medium. You'll benefit from discounts without being locked in for years. This is especially helpful if you anticipate your needs might change, for example, due to a new job or a move.

Step 4: Pay attention to the fine print

Providers like to hide costs in their terms and conditions. So always check:

  • What happens after your data allowance? Some providers charge exorbitant rates, others throttle your speed.
  • Are numbers like 0900 and 0800 included?
  • Does unlimited calling also apply to video calling via 4G?
  • Can you use your SIM card in a tablet or router?

Also ask about temporary promotions. Many providers offer discounts for the first few months or double your data allowance. Keep in mind that these benefits are temporary. Calculate your payment for the entire contract period, not just the first few months.

Step 5: Negotiate the price

Few people know you can negotiate SIM-only rates. Call customer service and ask about retention offers. These are special deals designed to retain or acquire customers. Especially if you're switching from a competitor, providers are often willing to offer additional discounts.

Timing is important. Providers are most flexible at the end of a quarter or during Black Friday. Even if you take out multiple subscriptions for your family, you can negotiate bundle discounts.

Practical tips for the transition

Arranging number porting is simple these days. Your new provider will handle everything with your current provider. Make sure your cancellation period has expired, otherwise you'll be charged a fine. Also, check if your device is unlocked. Phones purchased from providers always are unlocked these days, but older models may still be unlocked.

Don't activate your new SIM card until you're sure everything works. First, test whether you can make calls, send text messages, and use the internet. Also check that voicemail and other services are configured correctly. Keep your old SIM card for another month in case problems arise.

When is SIM-only not smart?

A SIM-only plan always seems more cost-effective, but that's not always the case. If your phone is older than three years, a newer device with a plan might be more attractive. Older phones often have weaker batteries and no longer receive security updates.

A comprehensive package can also be more convenient for business users. You'll have a single point of contact for both your device and your plan. If you run into problems, you won't have to figure out whether the problem is with your phone or your provider.

Finally, consider a refurbished device. These refurbished phones are much cheaper than new models, yet often still technically excellent. Combine such a device with a SIM-only plan for the best value.

Smart choice for SIM-only

Choosing a SIM-only plan is about more than just finding the lowest monthly price. It starts with understanding your actual usage and ends with smartly negotiating the terms. Compare providers on coverage and costs , check the fine print, and choose a contract term that suits your situation.

The biggest savings often come from using your current phone longer, perhaps supplemented with good accessories that extend its lifespan. This way, you'll not only get the most out of your plan, but also out of your device.