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How to compare SIM only deals
bonkers.ie makes it easy to find and compare the best SIM only deals in Ireland.
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What you need to get started
Ensure your phone is carrier unlocked
Current phone number (if intending to keep)
Knowledge of your mobile needs
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Things to consider
Data allowance
Fair usage limits
4G vs 5G
Contract length
Cooling off period
EXPERT TIP
Keep your phone and save
SIM only plans are a great way to save money on your mobile costs — especially if you’re happy with your existing phone and don’t want to upgrade just yet.
Plans start from just €10 a month and many come with unlimited calls, texts and data. Some even offer a guaranteed price for life. My research has found that switching to a SIM only deal could easily save you €300 or €400 a year. And you can keep your existing number if you switch.
Daragh Cassidy
Consumer Expert at
As featured on
Your questions, answered
Who has the best SIM only plan?
The "best" SIM only plan in Ireland depends on your individual needs. Popular mobile networks like Tesco Mobile, GoMo, Eir and Vodafone offer a range of SIM only deals. Some offer unlimited data while others offer low monthly costs or broad 5G coverage.
Is it cheaper to have a SIM only or contract?
Generally, a SIM only deal is more cost effective than a traditional phone contract and this is especially true if you already own a mobile phone. Contract plans often include the cost of a handset and spreads it over a one year or two year term which typically leads to higher monthly payments.
What are the disadvantages of SIM only?
The main disadvantage of a SIM only deal is that it does not include a new phone. This means you need to have a device already or buy one upfront. If your current phone is old or broken then a SIM only plan might not be suitable unless you plan to purchase a new handset separately.
What to look for in a SIM only deal?
When choosing a SIM only deal, consider your usage habits. Look at the data allowance you need. Check the included calls and texts as well as coverage in your area. Also, consider roaming allowances if you travel. Check if you need an eSim or regular sim and finally, compare the monthly price and contract length.
Can I get a SIM only deal and keep my number?
Yes, absolutely! When you switch to a new SIM only deal, you can easily keep your existing mobile number. This process is called 'porting' and is straightforward. Your new mobile network provider will guide you through the steps to transfer your number to your new SIM card.
How to know if you’re free to switch mobile provider?
To determine if you are free to switch mobile providers, first check if you are out of contract with your current provider. If your plan includes a handset or if you are on a traditional contract, there might be early exit fees. For prepay customers, you are generally free to switch at any time.
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