Below is how best you can upgrade to 4g in Uganda on Airtel
Dial *129# in your old line.
Enter the 20-digit serial number on the back of the blank 4G-LTE SIM card shell.
Power down your device and insert the new card.
How much is it to Upgrade To Airtel 4g In Uganda?
Airtel Uganda 4G-LTE SIM cards are offered free of charge as a replacement for an old card. New subscribers will part with only 2K for the same.
How do I upgrade my Airtel SIM to 4G in Uganda?
Hand over the SIM card replacement form you filled along with the photocopy of your ID. At The Plaza on Kampala Road, Airtel was kind enough to make a free copy of my National ID.
Be sure to explain that you are replacing your Airtel card for the new 4G-LTE SIM cards. After which, you will receive a blank 4G card.