A Kenyan Sim card will greatly reduce your telephone roaming bills during your visit and while on safari in Kenya 1 GB of data costs an average of $5. Safaricom, a telco provider in Kenya is the market leader with the best national coverage and better deals. Sim cards can be purchased from official stores or approved resellers. You can purchase them at the Nairobi airport upon arrival. Cost is approximately $1 or Ksh.100 To purchase local sim cards, you are required to have a Sim-unlocked GSM-compatible phone.