How to connect the Internet if the phone has one SIM card?

[BillShiphr]

I have a smartphone with one SIM card, and I do not want to change my number. At the same time, the Internet is very necessary on the trip. Does anyone know convenient ways to connect without having to change the card in the phone?

[Zavylon]

I also have a smartphone with one SIM card, and I don’t want to change my number while traveling. This used to be a problem, but now I just use eSIM Taiwan. I activated it in advance, and the Internet started working immediately upon arrival, without changing the main SIM. It’s convenient – ​​my number remains available for calls and messages, and fast Internet is always at hand. No more searching for local operators or worrying about roaming. Everything works stably and without unnecessary hassle, which is especially important when traveling.