Getting internet on all my apple devices?

Hi… I have Macbook and Iphone. I'm currently using TATA Photon+ CDMA datacard (no SIM on datacard) on my Macbook for browsing the net. I recently purchased ipad2 (Wi-Fi+3G).

My question: I need to access internet in all my 3 devices @ home and I need to access internet (during non-Wi-Fi spot) on my ipad2 while I'm outside.

Note: I can use my TATA Photon on wireless router to access internet on all my devices @ home but not possible for my ipad2 when I'm Outside as my TATA photon CDMA doesn't have SIM to carry on ipad.
Whether I need to return/Cancel this TATA Photon and purchase GSM SIM enabled data card so that I can use this @ home and on my ipad2 while going out! I have MicroSIM card adapter for inserting into ipad.

Need your valuable suggestions/feedback.

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Hi
I live in the UK and I've got the Viber app on my iPhone
I have access to Wi-Fi in my home which should allow me to use the app and call for free
My friend in Iraq has got the same app on his iPhone, however he doesn't have access to Wi-Fi and he doesn't have unlimited internet in his contract.

Would I be able to call him for free or does he also need access to the internet for the call to be made free?

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