Have you ever got a call from someone you don’t know via telephone, offering something and being annoying? Be careful, it can be a fraud. It is called spam calls or a fraud call. This phenomenon is quite common nowadays where you get an unknown phone and offer something or announce information that results in a request for money. You can still pay attention to some signs that the call belongs to a spam or fraud call.

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Coming from an unknown number
This is very clear and easy to detect. 100 percent of spam calls come from unclear numbers that you don’t know about. Usually, it comes from a cell phone number and not from an office or that uses an area code prefix, for example (021) or (031).
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They will not call twice
There are times when you might worry that the call came from someone you know or that there is important information. There is one way to find out: leave the missed call first.
If it is indeed an important call, then it is certain that the second call will use the same number. Fraudsters won’t do that because they are too exhausted.

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it is not coming from an official number
If you pick it up, you can tell if it’s a spam call or not the number. If it is indeed an official offer, then the telephone used comes directly from the telephone number of the company. If using a private number, just ignore it.
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It has a similar number
Within a day, usually, you will get several calls at once. The phone number will be different, but the number looks similar. The difference is usually located in the last three digits. For example, you are called by the end of 712, then another spam call can be 715, 719, or 721.
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They will not call using an application
Spam calls will contact you directly via regular telephone numbers. It is almost impossible to make contact via the messenger application. It’s easy to know if the caller is your friend or relative when calling using a dadu online app http://178.128.214.248.
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The fraudster is not professional in conveying information
Let’s just say you picked up the phone and the fraudster offers something. One of the things that you can notice is how they offer it by speaking. You will notice if the call is spam through the way he is speaking that looks unprofessional.
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Using a third-party application
This spam call problem has already gotten a lot of people’s attention. Therefore, some parties try to offer a solution, namely through a telephone number detection application. There are many available on the App Store or Play Store, choose carefully based on rating and user comments.