After installing hike, select Menu > "Invite Friends", or click on the Friends tab and select "Invite Friends to hike"
Select the SMS invite option and select the friends you wish to invite.
Select Menu > "Rewards" and redeem talktime
Click on the Redeem button to recharge your mobile number with free talktime.
*On iOS/S40, click on the "New" option in the menu to access Rewards