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I use this in my tablet and Windows did not recognize the card. After speaking with customer support, I added an APN and it's working great. 5 stars just for the representative in the UK. This card DOES work in the US with both T-mobile and AT&T.
So when I have researched this it states that it should last approximately 144 hours. It's only lasted a few hours and all I have done is answer questions on an exam bank and watch Ipad. Only a few hours (no more than 6) at most as still using my subscription to BT wifi. I use 3 as my mobile service provider and have done for years as happy with my plan but this is a massive disappointment and feels like an absolute rip-off. Buyer beware!!