How to buy/activate safaricom bundles

To activate the safaricom data bundles
Bundles can be bought by dialing *544# or
Go to www.safaricom.com/bundles
Send an SMS from your Safaricom mobile number with the price of the bundle to code 450. For example, to purchase a bundle of 500MB, send 500 to 450.
You will receive an SMS informing you of the status of activation of the bundle.
You will be able to use the service once you receive an SMS informing you that the bundle has been activated.

Note:

These bundles are valid for duration of time either ninety (90) or one hundred and twenty (120) or one hundred and eighty (180) days as indicated in the table after which they expire.If the bundle expires, you will not be able to access or reactivate any data balance unless you activate another bundle before your old bundle expires. Any bundle that you activate before your old bundle expires will give you the opportunity to be able to use both the old balance and the newly activated bundle for the validity period of the newly activated bundleTo renew the bundle, you will need to purchase through any method described above.You will not be able to buy data for use on a Partner Network.Once you exhaust your bundle, you will be charged the Safaricom published out of bundle rate for continued use.