The description is confusing. Do you get three 12gb cards? As it says trio? Thanks

No, you do not get 3x 12gb cards. "Trio" refers to the fact that it is a Standard Size, Micro and Nano SIM card all in one - you just press out the size you need for your device.

Can this sim be topped up or should I buy two?

You can top it up with money, but you'll be charged at the non-plan rates for calls and texts. You can buy texts which don't seem to expire. 40 texts for 3 GBP. You can buy add on data, but you'll spend 25 GBP for 7 GB that EXPIRES IN 30 DAYS. So if you know you are going to use your data, buy 2 because the add on top up deal packages are NOWHERE as good as buying a new SIM with this data deal.

Will this sim card work in a mobile phone used just for data not for making calls?

I used 2x 12 Gb cards, in a smartphone, for 2 years, including in USA. Subsequently bought a 24Gb card which worked fine for a while then failed in USA. Had correspondence with 3-Mobile who said it was not for use in a phone. Conrtacted the supplier (7dayshop.com) whio said they use it in phones but subsequently confirmed via 3-mobile it was only for Tablets etc. so got a refund.

Does this have to be activated? And if so, how?

Once you use it for the first time, it is activated. I would recommend activating it in the UK or at least in Europe. The first one I bought, I used in the US for the first time and it took me hours to get it connecting.

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3GB Data SIM

Product ID: 48580252

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Details

Brand
Three Mobile
Service provider
Threeuk
Cellular technology
3G
Product dimensions
9L x 7.2W
UPC
715120487036

🌍71 Destinations

📱Universal SIM Compatibility

📶5G Network Access

Description

📱 Stay Connected, Stay Ahead!

MORE DATA MORE FUN - Up to 12GB of data available for use.
TRAVEL WITHOUT LIMITS - Use data in 71 destinations worldwide.
STAY CONNECTED ANYWHERE - Pre-loaded with 3GB of data that lasts up to 3 months.
EXPERIENCE BLAZING SPEEDS - Access to our 5G network at no extra cost.
FLEXIBILITY AT YOUR FINGERTIPS - Compatible with any unlocked 3G, 4G, and 5G device.

The Three Mobile Pay As You Go Mobile Broadband SIM offers 3GB of pre-loaded data valid for up to 3 months, with access to a robust 5G network at no additional cost. Perfect for globetrotters, this SIM allows data usage in 71 destinations and is compatible with any unlocked device, ensuring you stay connected wherever you go.

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Cellular Technology

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