I have bought a new phone "Huawei P20", however, does not fit my old sim card (from samusng Galaxy S5) in the new phone. My provider is Aldi Talk / Medion mobile. Do I have to go to Aldi now to give me a smaller SIM card? Must pay for it?
At Aldi Talk it was until a year ago so that you can contact them by e-mail and then send them a new card. Unfortunately, I can't tell you what it's like right now
Call the hotline at 1157 or 01771771157 and order a free "replacement card" you will get after about 3 days to your address. The new SIM card (with old phone number and credit) then has the three possible formats (Mini, Micro and Nano).