I fully charge the phone but within 48 hours,even without using it, have to charge it again

the magnetic closer may be causing interference with the units ability to stay connected to service..if thats the issue it will constantly be searching for a signal which sucks power to do..like being in a metal enclosure and getting reduced bars..

loose connection on battery? if new batts then you must charge them for a full 24 - 48 hours before using. but posts must be tight. they never fully charged if connections were loose to start check all connections on chair

hi,
did you charge your battery for at least six hours before using it? New batteries are supposed to be charged for at least six hours before using it. If you didn't charge it, what you should do is boost-charge your battery with a genuine booster for some hours. Unless your battery is a fake, that should do it.
hope this helps

Hello Sunil,

Knowing your phone's behavior, Its not usual that the battery if fully charged, will drain within the day, especially that you said even if it is not being used. I would highly advice that you avail the warranty of this phone since you have just purchased that unit. Do not rely on Nokia's customer service online. Go to the store where you made the purchase and avail the warranty. They should change the battery pack.

I'm not certain what your question is you made a statement more or less.

I do know that alot of cell phones will show that they are fully charged after minutes of charging, but then very quickly go back down to almost dead within an hour. This is because the phone is not actually fully charged. Most batterys need at least an hour minimum to be fully charged after its drained completely.

Post back if you need any further assistance. Thank you for choosing Fixya!

I think you have to replace the battery..

A friend that worked for GTE advised me some yrs ago to do this and I have NOT had a problem with another battery since
when you get any new Battery charge it plugged in to the ac AND phone jack for a minimum of 24 hrs without using it.
all batteries have some memory and deminish power over time but if it was NOT fully charged to begin with as a yr goes by so does the battery life. hope this works,

You need to replace your battery.  When you do follow these steps to preserve battery life.
1.  Fully charge battery for 24 hours 2.  Make sure that you use the phone without charging it until the phone tells you the battery is low. 3. Fully charge the battery until it reaches full again.
The reason your battery is failing to hold a charge is a problem call battery memory.  The less power that you use off the battery the less capacity the battery has.  

You just have to charge it fully but not for long as soon as it turns full battery then swithch ur phone off then take the battery out for a sec then put it back on then turn ur phone on then it will work for a longg timeee kk..

then you should take the phone to a mobile service center and have the firmware reflash on the phone.