Most of the hotels and coffee shops will have a Wi-Fi connection that can be used for free or for a small fee. It’s a good idea to install a VPN on your phone or laptop for additional security, when using these.
Besides that, Tanzania has a lot of internet cafes. However, using one is not completely safe. Which is a worldwide problem and is not limited to only Tanzania.
A third option is to use a Tanzanian SIM card. You can rent one with us, or they are for sale on the streets.