You really have four choices on a trip to Belgium. You can buy a local SIM card in a shop, rent a pocket wifi device, keep your home plan switched on for roaming, or use a travel eSIM like ours. Each one gets you online. They are not equal on price, time, or effort.
A local SIM means finding a Proximus or Base store, showing your passport, and waiting in line on your first day. Pocket wifi means picking up a box at the airport, carrying it everywhere, charging it every night, and returning it before you fly home. Home roaming is the easy one, but it can cost a shocking amount per day if your plan does not include Europe.
A MegaEsim plan skips all of that. You buy it before you leave, scan one code, and your phone is ready before you reach the gate. The rest of this guide compares each option in detail so you can see where the eSIM pulls ahead.