iPhone se He is cautious about unknown numbers. He does not display the caller's name because Apple does not work with any global identification database, and leaves the decision up to you. This has privacy benefits, but in practice it means that a missed call is just a number without context. The first thing to do is to find out, Who called you?
Co iOS Offers
In Settings, under Apps and Phone, you'll find the option to Mute Unknown Callers. When you turn it on, calls from numbers you don't have in your Contacts will never ring — they'll go straight to voicemail and appear in your call log. It's a crude tool: it filters out annoying calls, but also calls from doctors or couriers. So it's worth going through your call log from time to time.
You enter a number and immediately see what others have experienced.
Third-party applications are an addition
iOS allows so-called Call Blocking & Identification extensions that provide a list of numbers to the system. This works well for large international campaigns, but for local telemarketing the database tends to lag behind. It is faster to see what people who have already called the number have written.
International numbers
A special chapter are calls from area codes that you don't normally see in the Czech Republic. The classic is one ring and hang up, with the goal of calling back to a tariffed number. Before you do that, check where the number is actually from — an overview of international area codes will tell you whether it's the country you're dealing with or something completely different.
Detail of the issue with comments and ratings.
Scams that also happen on iPhone
Fake bank security line. Alleged Apple Support that resolves attacks Apple ID. Delivery person with additional duty. What they have in common is that they want a code from SMS or payment immediately. Apple Even the bank never asks for a verification code over the phone. You can find specific numbers and the call history among described frauds
Practical habit
Don't immediately call back a missed call from an unknown number. Copy the number, verify it, and depending on the result, either save it to your contacts or select Block caller in the call list. A few seconds of work will save you a lot of interruptions.