In 2010, number of femtocells around the world exceeded the number of macrocells. Femtocells are small base stations that operators place in homes or businesses to improve coverage. Now, many femtocell makers are including Wi-Fi in their products. The timing is right for even more growth because operators are upgrading their networks to LTE, next generation mobile technology. Still, for some operators, sticking with Wi-fi instead of fem tocells makes sense, says T-Mobile.”]