For those who travel abroad, there's always a pang of jealousy when locals are able to switch on their phones upon landing, without a thought of excessive fees. While smartphones make a great travel companion—especially abroad where maps, translators and staying connected with home can make or break a trip—roaming charges can be a major burden. With the exception of global mobile plans, the only other option is purchasing a local SIM card, which can be time-consuming, expensive and at times downright confusing. World travelers take note: Canadian tech startup KnowRoaming offers the solution we've all been waiting for, but never knew of.