Try to determine caller's phone number through Internet search engines. Simply enter the cell phone number into the search bar and look at the results. So you can discover information, for example about the rooms belonging to the owners of fraudulent services, illegally written off money from subscribers through the imposition of paid services. This will help determine whether it is safe to call or send a message to the phone from which you receive calls.
To know a person via cell phone number you can use social networking, Dating sites, ads, and other online resources, where users often post detailed personal information, including the coordinates for a feedback. Perhaps trying to reach you distant relative or acquaintance.
If the name of the caller could not figure out, you can find out what country, region or city is registered the number. For this you need to pay attention to the code of the mobile operator - the first three digits, e.g., 927, 919, etc. Using any of the Internet search engines can find out which operator belongs to the code. If the call were made from your region or even city, you can try to dial this number and find out who was calling and what he needs. If the region and country other attempts to make a call can lead to large monetary losses.
In that case, if you need to determine the caller phone number, for example, you found a lost someone SIM card or the phone itself, better to take it to the nearest salon mobile police Department. The personnel of these services have special powers that allow them to learn personal information of citizens. If you want to find out who owns a cell phone number out of curiosity, it is better to leave these attempts because this information is confidential and cannot be disclosed without a special occasion.
On the Internet there are many sites supposedly offering for free or for a certain amount to find out the owner of a phone number. In 99% of cases these resources are fraudulent and if you try to use their services you will be under the risk of losing a large sum of money to be illegally charged from your mobile account. Also, do not leave your number free online, or he can get into the database to criminals.