Does pay as you go Sim come with a phone number

Yes they do, but you sometimes can ask to keep old number

I just want to use it for a spare phone could I use it in Ireland and could I top it up with credit from the post office?

Yes to using it in Ireland but I do not know whether or not you can top it up through post office.

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Giffgaff Nano/Micro/Standard SIM. Top Tariff Offers Unlimited Calls, Text, Data - Just Pay As You Go - no Contract. Multi Size, Fits All Devices. £5 Bonus Credit When You Top up £10 First Time.

Product ID: 233590460

Details

Brand
Giffgaff
Cellular technology
4G 5G
Service provider
O2
UPC
746241786562
Unit count
1.0 count

💷£5 bonus credit on £10 top-up

📱3-in-1 SIM fits all devices

📶4G/5G ultra-fast connectivity

€ 1.10

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

€ 1.10

Duties & taxes included

In stock

Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Slovakia.

Secure transaction

Description

📶 Stay connected, stay limitless—no contract, no compromises!

UNLIMITED FREEDOM - Enjoy unlimited calls, texts, and data with no contract tying you down.
INSTANT BONUS BOOST - Get £5 bonus credit when you top up £10 for the first time—start smarter.
TRUSTED NETWORK POWER - Powered by O2’s reliable 4G and 5G network for blazing-fast connectivity everywhere.
FLEXIBLE PAY AS YOU GO - Only pay for what you use with Giffgaff’s flexible Goodybag plans.
SEAMLESS COMPATIBILITY - 3-in-1 SIM design ensures perfect fit for any device—nano, micro, or standard.

Giffgaff’s multi-size SIM card offers contract-free, unlimited calls, texts, and data on O2’s 4G/5G network. With flexible pay-as-you-go Goodybag plans and a £5 bonus credit on your first £10 top-up, it’s the perfect choice for professionals who demand seamless connectivity across all devices.

Specifications

ASIN	B08KHDBZK5
Best Sellers Rank	163 in Electronics & Photo ( See Top 100 in Electronics & Photo ) 1 in Prepaid SIM Cards
Brand Name	Giffgaff
Cellular Technology	4G,5G
Customer Reviews	4.5 4.5 out of 5 stars (265)
Manufacturer Part Number	43297349984
Model Number	43297349984
Number of Items	1
Number of Packs	1
Service Provider	O2
UPC	746241786562 746241757845
Unit Count	1.0 count

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

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Smooth transaction and product arrived in perfect condition.

3 weeks ago

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