Currently Being ModeratedMay 25, 2013 4:12 PM (in response to Drakey68)
Apple offers an out of warranty or not covered under the warranty "repair" price, which pays for an exchange at a significantly reduced price off the full retail sales price.
Currently Being ModeratedSep 6, 2013 4:29 AM (in response to md.manjur)
You would need to take it to an Apple store in the country where you bought the iPhone. There are no Apple Stores in Bangladesh and the iPhone is not even sold there.
The iPhone warranty and OOW service are not international.