Are the simcards inside these USB modems similar as to their regular prepaid cellphone simcards that we can just buy anywhere? Or are they special in the sense that they have data only capabilities? The reason I'm asking is because I purchased the Huawei e5830 MiFi and I want to be able to use this with Smart Bro, Globe Tattoo, or Sun Broadband wireless.
Another way to rephrase my question is that supposing someone had an unlocked USB 3G modem (either Globe Tattoo/Smart Bro/SBW), can he/she just purchase a regular prepaid simpack that can be bought just about anywhere, load it up, then use it for 3G surfing?
Or, do I have to buy the prepaid broadband kits of each of the telcos just to utilize the data sims that come with it.