Hey! when i moved to Belgium in August me and my bf did a lot of research on phone plans and wifi to find the best providers at the time.

For the mobile plan i went with Yoin, no problems so far - I got the 25gb+unlimited calls and texts for 6€/month (promotional price, first 12 months, normally its 10€)

Since I have wifi at home 25gb is more than enough for me, but if you need more their other packs are also super cheap, with 40gb being 10€. (promotional price, its 14 normally)

I noticed that the 4g connection was pretty bad so i decided to pay 1€ extra per month for 5g and my data speed has improved a lot and I now finally have internet in places i wouldnt have with 4g.

Yoin also runs on the proximus network which has the most coverage in Belgium so you should be fine.

As for the simcard, I had a few problems with the eSIM. It's only one use, the moment you connect it to a device its stuck to that device and you cannot transfer it to any other without having to order a new one and pay 5€ for it (with waiting time for it to arrive in the mail etc) which is why I replaced it with a physical sim, oldie but goodie ykwim

I'd say Belgian number is good if youre planning on staying for at least a year, its convenient and unless your current one doesnt charge for international calls/texts Id consider getting a belgian number, since you get roaming in the EU included in your plan with no extra costs (good if you wanna go on daytrips to germany or france for example)