Excuse me, is the unlimited traffic card sold on Taobao usable in Serbia and Bosnia and Herzegovina ?

I'm fine with it. The phone needs to be restarted after crossing the border. The disadvantage is that it's twice as expensive as locally.

Go over there and buy, it's cheaper than Taobao. Generally phone booths sell them.

Just so-so. It's recommended to buy the card locally. You can also make phone calls.

The product I bought is a Serbian internet card, which is good to use. If you only need to use it in one or two countries, it's more cost-effective to buy it there. Since I need to use it in six countries, I bought it all at once on Fliggy to save trouble.

Good to use

Bosnia is okay, we didn't go to Serbia.