Safaricom appears to be rolling out a new SIM Toolkit (STK) change that adds an extra confirmation step when sending money via M-PESA, and some users are not ...

In my wallet, I have a little “secret” compartment which contains a few international micro SIMs, an Apple-made SIM ejection tool (aka a fancy paperclip), and a guitar pick. Or at least I usually do.

Thanks in no small part to T-Mobile's free global data initiative, US carriers have begun to lighten the fee load when it comes time to roam. But you'll still pay an arm and a leg in many countries, ...