Three Ireland Top Up Guide: App, Online & Plans

Running out of credit mid-conversation on Three Ireland’s prepaid service is an avoidable annoyance — the network offers a dozen ways to add credit instantly without hunting for a shop. This guide walks through every official method, how to set up automatic top-ups, and when a third-party service might work better.

Top-up amounts available: €10, €20 ·
Official top-up site: mytopup.three.ie ·
Third-party options: ding.com, recharge.com ·
Plans mentioned: €15 Prepay, €20 Prepay ·
Instant top-up from: €5

What is the 3 €15 plan?

Three Ireland’s €15 Prepay plan targets lighter users who want straightforward voice and text without the pressure of a 28-day reload cycle. The €15 option gives you a set amount of data, minutes, and texts that refresh when you add credit — though the exact bundle details depend on which promotion Three is running at the time of your top-up.

Terms and conditions

• Credit expires if no chargeable outbound usage within 180 days after activation
• Free voucher credit (including welcome bonuses) expires after 30 days
• Vouchers must be activated within 90 days of purchase

What you get with €15 top-up

The €15 plan sits below the €20 option in the Three Prepay lineup. According to Three Ireland’s prepay price guide (January 2021), the €20 plan historically unlocked the full bundle including data allowances and promotional extras. The €15 option provides essential services but with reduced data compared to higher-tier top-ups.

How do I top up My3 Ireland prepay card?

Three Ireland offers multiple official channels for adding credit, and the My3 app remains the fastest according to the official support page. Here’s how each method works.

Top up via My3 app

• Download the My3 app from your device’s app store
• Log in with your Three account or register if you’re new
• Select your prepay number and choose “Top Up”
• Pick your amount (€5 to €40) and payment method
• Credit arrives instantly to your account

Dial 1744 method

Call 1744 free from your Three phone and follow the voice prompts. According to Three Ireland’s official guide, you can pay with your registered credit or debit card without using the app. This works even if your balance is critically low — the call itself is free.

Online at mytopup.three.ie

Visit mytopup.three.ie/unregistered to top up without creating an account. Enter your Three mobile number, select your amount, and pay with PayPal, Visa, Mastercard, or Amex. The credit processes immediately.

Schedule monthly top-up

Set it and forget it. Within the My3 app or your online account, go to “Scheduled Top-Up” and choose either a specific date each month or a low-balance trigger. As Three Ireland’s support team explains: “You can set a low balance top up to add credit when it runs low, or schedule a top up for the same time every week/month.”

The implication: if you’re on a 28-day plan, setting your scheduled top-up to fire one or two days before your cycle ends prevents any service interruption.

How to top up someone else’s phone Three?

You can add credit to any Three number — not just your own — through several official methods.

Using 3Community guide

According to Three Ireland’s official top-up guide, the My3 app and website both support topping up friends and family. In the app, simply select “Top Up Another Number” instead of your own line and enter their Three mobile number.

Third-party sites like ding.com

Services like Recharge.com let you send credit to any Three Ireland number from anywhere in the world. The process takes a few minutes: enter the recipient’s number, select the amount, pay with your card or PayPal, and they receive a top-up code via email. Recharge.com supports 50+ payment methods in 60+ currencies.

The catch: third-party services may charge a small processing fee on top of the top-up amount, and delivery isn’t always instant. Check the final amount before confirming.

What does €20 Three top up get you?

The €20 Prepay tier sits at the centre of Three Ireland’s prepaid offering. Based on the Three Ireland prepay price guide (January 2021), this is the threshold for maintaining active plan benefits.

€20 Prepay plan benefits

The €20 top-up amount triggers the plan cycle, which refreshes every 28 days. According to Three Ireland’s legal terms, customers must top up €20 or more every 28 days to maintain promotional benefits. Failure to meet this threshold means the account reverts to out-of-bundle rates for voice, text, and data.

Terms from Three Ireland

• Plan benefits refresh on each successful €20+ top-up within the 28-day window
• Credit that sits unused for 180 days without chargeable activity expires
• Free bonus credit (such as welcome or porting bonuses) expires after 30 days

How do I top up my pay as you go on 3?

The terminology matters here: Three Ireland calls its prepaid service “Prepay,” not “pay as you go,” though the ComReg (Ireland’s communications regulator) guide treats them as equivalents for clarity.

Pay As You Go support options

According to ComReg’s official comparison guide, all Irish prepaid providers — including Three — offer website top-up, app top-up, phone dial codes, SMS methods, bank transfer, and physical vouchers. Three covers all six channels.

Instant top-up online

Head to mytopup.three.ie/unregistered, enter your number, pick an amount, and pay. The credit arrives within seconds. You don’t need to be logged in or have an account set up.

Check your balance

Dial 1745 from your Three phone to hear your current balance, or text BAL to 50233 according to ComReg’s guide.

Official vs. third-party top-up comparison

Five Irish providers compete in the prepaid market, each with slightly different top-up codes and channels.

The pattern: Three’s SMS code (50100) aligns with Tesco Mobile’s, while the dial codes vary more widely across providers. All five support online top-up through their respective websites, according to ComReg’s comparison data.

Step-by-step top-up methods

Method 1: My3 app (fastest)

1. Open the My3 app and sign in
2. Tap “Top Up” and select your Three number
3. Choose amount between €5 and €40
4. Confirm payment with your saved card or PayPal
5. Credit appears instantly — no restart needed

Method 2: SMS top-up

1. Open your messaging app
2. Send: TOPUP, [amount], [last 4 digits of registered card]
3. Send to 50100
4. You’ll receive a confirmation SMS when credit is added

Method 3: Physical voucher

1. Buy a Three top-up voucher from a 3 Store, An Post, or Payzone outlet
2. Text TOPUP [voucher code] to 50272, or call 1744
3. Follow the voice prompts to redeem
4. Vouchers must be activated within 90 days of purchase

Method 4: AIB bank app

1. Open AIB’s mobile app or online banking
2. Navigate to “Mobile Top-Up” or “Bill Payments”
3. Select Three Ireland as the provider
4. Enter your Three mobile number and amount
5. Confirm with your AIB PIN or biometric

The implication: AIB integration means you can top up even if you don’t have your Three phone with you — useful for parents managing a child’s prepay account.

Confirmed facts and what remains unclear

Three Ireland’s official channels provide transparent, well-documented top-up methods. The regulatory oversight from ComReg adds a layer of accountability.

• Official methods from three.ie cover app, website, SMS, phone dial, bank, and voucher
• Prepay plans require €20 top-up every 28 days to maintain active status
• Voucher activation deadline is 90 days from purchase
• Credit expires after 180 days without chargeable usage

• Current 2026 plan allowance details remain unverified (latest official guide dates January 2021)
• Whether third-party services like Recharge.com charge fees on Three Ireland top-ups
• Specific data caps on the €15 vs €20 plan tiers under current promotions
• Northern Ireland coverage differences (Three UK operates separately)

“Never run out of credit again. With My3 you can set a low balance top up to add credit when it runs low, or schedule a top up for the same time every week/month.”

— Three Ireland (Official Support Page)

“It’s no longer necessary to buy your Three top-up from a physical shop. You don’t even need to be in Ireland, or have an Irish debit or credit card to top up Three.”

— Recharge.com (Three Top-Up Guide)

“The My3 app is the quickest way to top up.”

— Three Ireland (Official Support Page)

The pattern: Three Ireland’s own materials consistently position the My3 app as the primary channel, with SMS and phone dial as fallback options. Third-party services fill a genuine gap for users outside Ireland or without access to Irish payment methods.

What this means for Irish prepay users: the official channels are fast, free to use, and well-integrated — there’s rarely a reason to pay extra for a third-party service unless you’re topping up from abroad. Set up a scheduled top-up in the My3 app once, and you may never need to think about credit again.

Related reading: National Lottery IE App Scan · HSE Civil Registration Service

Frequently asked questions