Hi, I have a lenovo yoga 10 tablet model lenovo B8080-H. I have a problem & need help. After I have purchased this unit only that I come to know that it can't make calls, only SMS. That is also fine, the problem is that I am using a prepaid sim card & accessing to internet. Every time when I need to reload or topup my prepaid, I have to take my sim card out & use another phone to top up then install it back to the tablet. Are there any third party software or any other way I can reload or top up without taking the sim card out as the tablet does not have a dialer pad. Thank you.