My Samsung Galaxy S4 recently updated to Kit-Kat. Since then, several times a day, it looses its connection to the Koodo network (goes to zero bars or circle with slash). It does not recover from this on it's own. The only way to get it to reconnect is to restart the phone. Strangely, while I was roaming in the US for the past 2.5 weeks, this was not a problem. What's up? Is anybody else experiencing this problem?