According to Apple CEO Tim Cook sales in many developing countries including in India is decreasing because of three main reasons..
First of all people having iPhones are not upgrading to the latest versions of the iPhones which is affecting its sells in developing countries.
Second is the foreign exchange value which has increased too much which is finally increasing the value of dollar in comparison to the local currencies of the developing countries.
Third reason is there battery replacement program which made it inexpensive and efficient to replace the battery and hold onto their existing iPhones a bit longer he explained.
But besides these reasons one more reason that Apple’s CEO would not like to mention it is that from Apple’s older iPhone let us take for example iPhone SE to iPhone XS max there is no major update in iPhones if we leave face unlock, rather than increasing display size.
Now people want some major updates in iPhone which encourage them to buy newer iPhones.
Apple should take this seriously otherwise sales worldwide will fall steeply and they can do nothing rather than watch .