Tips when buying used phone

Here will come the tips

  • Write down on the paper what you expect from your new phone
  • Check the market to see which phone suits your needs (maybe you will need to decrease your needs if you want cheaper price :))
  • Check some online classified ads or local paper ads
  • Ask if phone is locked to some network
  • Ask what comes with the phone (even if ads write everything, double check that it is right) (memory card, charger, guarantee list, box, data cable, headphones, car charger…)
  • Recognize the scam
  • Ask for IMEI number
  • Check if phone was stolen or lost (by IMEI number in phones database, )
  • Negotiate for price
  • Meet in public (check IMEI again, check the scratches, check total calls counter, make a phone call to see if everything works as it should and that phone has good signal, good speaker, microphone etc…)

Operating system from IMEI number

There is usualy a need to get a device type, brand, model, operating system, frequency bands, display size and other characteristics for mobile device from IMEI number for different purposes (user phone type analysis, user phone operating system analysis for different applications platform, device detection tool, marketing campaigns, device type restrictions for data traffic included in bundles) it is important to get information about users device used in network.

We are currently able to serve information about : [Read more…]

Anti-theft mobile tracking software

Tracing mobile phones (cell phones) – Software

The best way before your phone is stolen or lost is to do something by yourself. There is a lot of software on the internet which allows you to get information about the current MSISDN (phone number) using your phone, location of the phone (if your phone supports GPS or by CELL info), to delete your phonebook remotely, to lock your phone etc…

Here is a list of some anti-theft, tracking, locating software for mobile phones which works on different platforms, some of them are FREE and some are commercial.
[Read more…]

Stolen phone

There are a lot of people all over the world whose mobile phone was stolen or lost. Because mobile phone is a device which has its own serial number called IMEI we can do something to increase possibility to find it or to prevent usage of it.

What to do if your phone is stolen or lost?

First of all the case should be reported to your mobile operator and to local police station. After this you can submit your phones IMEI number to global stolen phones database. A lot of people checks the database and can recognize your mobile before buying it from second hand (if it is submited in database). If you are not sure what phone model and manufacturer you have check here.
[Read more…]

TAC list – Phone model finder

If you want to find out your phone model and manufacturer from IMEI number then you are on the right place. Our database has more than 75.000 TAC entries. You should be able to find out what is your model type.
[Read more…]

Unlocking mobile phone by IMEI

IMEI unlock
Mobile operators all over the world are locking their mobile phones to work only in their own network. They want to prevent a solution that you buy a cheap phone from operator A and then use services with the same mobile phone from competitive operator B, because they [Read more…]

Change IMEI number

Changing IMEI number is problematic in most countries, because it is in conflict with the law. It is the same as if you wanted to change the serial number of your car. If they catch you doing this you can go to jail.
[Read more…]

IMEI stick-label examples

Those are IMEI label examples of the different phone models. You can recognize IMEI by 15 digits (without other characters like slash “/” or minus “-” or spaces etc…)

Nokia 6020 label

Nokia 6020 IMEI label

Nokia 6020 IMEI label

[Read more…]

IMEI blacklist

IMEI blacklist is a list of IMEI numbers which were reported to operator as stolen or lost. Operatorshas access to EIR (Equipment Identity Register) and if your phone is listed in this registry you can not use you mobile anymore in this operators network.

One of the lists can be found on stolen phones, lost phones database.

How could you know that the phone is blacklisted?

When you insert SIM and turn ON the phone you see message like
SIM card registration failed or
Invalid mobile

or if nothing from above messages, then you will not be able to make an outgoing phone call. You will hear some beeps and then call will be dropped.

IMEI structure

IMEI number is structured by the BABT. It has 15 decimal digits. Actualy it has 14 digits plus a check digit. The structure of the IMEI is specified in 3GPP TS 23.003. First 8 digits of IMEI number are TAC (Type Allocation Code) which will give you the mobile phone brand and model. Other 7 digits are defined by manufacturer (6 are serial number and 1 is check digit).
[Read more…]

Check digit calculation

15th or the last number of the IMEI is a check digit calculated using the Luhn algorithm.

The Check Digit is calculated according to Luhn formula. The Check Digit is calculated of all other digits in the IMEI. The purpose of the Check Digit is to help guard against the possibility of incorrect entries to the CEIR and EIR equipment.

The check digit is validated in three steps:
[Read more…]

Why is IMEI number important?

IMEI number is important for the same reason as your car’s serial number. Mobile operator can track usage of your mobile phone very fast if it is used in the same network, but police can not track your car so fast. Mobile operator can see if your phone is used by some other user in their network, but if it is used in other operators network then your network operator can not see it. [Read more…]

IMEI number

On this page, you will find some usefull information about IMEI number. We will show you how it is structured and how you can find it.

Check different topics regarding IMEI number below.

What is IMEI number
How to find IMEI number
IMEI validation check
Check digit calculation
Luhn algorithm – Luhn formula
IMEI lookup
IMEI structure
Changing IMEI number
Unlock mobile phone by IMEI
TAC database
IMEI blacklist
TAC list
Anti-theft software list
Stolen and lost phones database
IMEI number lookup