An HTC One M9 retail listing points at an end of the month launch for the high-end smartphone. The retail giant B&H listed the smartphone with March 25 launch date and $649 price tag.
The launch date and the price tag were quickly removed from the listing by the retailer, so we might indeed have seen the actual launch date of HTC One M9. B&H has a stellar track record as a retailer, so there is little reason to doubt its listing.
iPhones gives regular updates to old models also because the hardware are same since 2011 (only change in speed from 1GHZ to 1.2GHZ to 1.5GHZ). It's becomes very easy to Apple to include any software update for the old devices. I used iPho...
Customer retention. it's not about how many buy your product. What really matters is how many keep buying your product.
This is the reason why Apple is so successful! Constant OS update for their older iPads and iPhones several years back which other makers fail to do so.