The retail box and the bill both have the IMEI number written on them, which is a good reason to keep them safe instead of throwing them out. When you don't have the phone: Check Phone's IMEI Number on Retail Box or Bill On most other phones with a removable battery, the IMEI is printed on a sticker that is inside the phone, under the battery. On an iPhone, tap Settings > General > About and scroll down to IMEI. Tap Status and scroll down to see the IMEI information. On Android, go to Settings > About > IMEI to see the IMEI number. How to Check Phone's IMEI Number Via Settings On iPhone 4s or older iPhones, the IMEI is printed on the SIM tray. If you have an iPhone 5 or newer iPhone, the IMEI is also engraved on the back panel. You should note it down somewhere safe or you can always take a screenshot. The IMEI number will now be displayed on the screen. It works on almost all feature phones and smartphones, so try this before you go hunting for the phone's bill. The good thing about this method is that it is more or less universal. This is the simplest method of finding your phone's IMEI number. When you have the phone: How to Check Phone's IMEI Number Using USSD code This is how to find your phone's IMEI number. And if the device is located, you can use the IMEI number to establish that it is indeed your phone.

This makes the number important in emergency situations. Similarly, tablets with cellular connectivity will also have a IMEI number. Note that an IMEI is associated with a SIM slot, so dual SIM phones will have two IMEI numbers. Police usually require you to mention the IMEI number when reporting your phone as stolen and, then, depending upon the local laws, your phone can be blocked from accessing networks or placing calls by blacklisting its IMEI. This number is very useful if you lose your phone, or if it is stolen. The IMEI (International Mobile Station Equipment Identity) is a unique number assigned to every mobile phone sold via official channels. If you're drawing a blank and trying desperately to find out what this number is, don't worry.

When you're registering your phone, or trying to sell an old one online, you might be asked for your IMEI number.

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