How long will a phone’s battery last?

About batteries:
It’s difficult to give an exact estimate of how long a phone’s battery will last – battery life depends on the phone itself, how often you use it and what you use it for. Checking the following specifications on a phone gives you a guide on how long the battery will last:
Talk time – the maximum amount of time you’ll be able to make a call on your phone before the battery runs out.
Standby time – the maximum amount of time you’ll be able to have your phone turned on before the battery runs out.
Having facilities like Bluetooth or the internet turned on means your phone will drain your battery more quickly. Top of the range smartphones often do as much work as a laptop, so it’s no wonder that they need charging more often.
If a long battery life is very important to you, you might be better off opting for a more basic phone.

Find your IMEI number

IMEI numbers explained:
IMEI stands for International Mobile Equipment Identity. It’s a unique number given to every phone and is used to identify it from other phones – just like a number plate for your device. IMEI numbers are usually 15 to 17 digits long.
Finding your IMEI number:
You can find your IMEI number by calling *#06# from your phone (your phone won’t actually make a call and you won’t be charged). Additionally, on most devices, the IMEI number will be printed in small letters on a sticker underneath the battery. For more info about finding your IMEI, check your manufacturer’s user manual.