Provides backup as good with the mobile phone. This battery is the best alternative for your great phone and will never explode or give any problems.This battery has been designed specifically for your handset and is ideal as a second battery or for your battery. Simply charge one while the other is in use and you'll be able to use your Smartphone all day every day. This product provides outstanding talk and standby times. These batteries provide the long-lasting and performance you deserve.We ask you to use an company charger to charge your mobile and our battery any other than charger can affect your battery and mobile drastically. Check if there is any dust in the connector or if any pin is broken or not. Also check for any corrosion in contact and plug. Clean the plug using IPA or swabs. Make sure you use ESA safe ----- only check the interface connector to see if there is any dust or not. If there is any dust then clean or replace the interface connector as required. If the problem is not solved then update the software/operating system (os) to theversion If the problem is still not solved then check the mobile phone PCB current consumption. THE BATTERY INSTRUCTIONS: Please drain all the power of the battery for the first 3 times before charging, and then take a full charge. Thus the battery can be reached the optimum effect of using. its full effect and longevity is only achieved after 3 to 5 complete charge and discharge circles.