This all depends on the device you will be using but it is quite easy to configure. Below i have attached a link on how to set up a APN on a mobile device/Smartphone and the other links are for the Mobile devices we provide. Kindly use the links as they also contain the manuals for the devices we provide.
APN Smartphone: http://www.afrihost.com/landing/mobile_data_apn_setup/
Hardware Support: https://www.afrihost.com/site/hardware_support
APN FAQ: https://www.afrihost.com/site/faq/apn_access