This entry was first published in mid-February 2016. April 2, 2016 system update correct the problem. Now, device can be used as MTP and PTP device.
April 23, 2016 system update correct the second problem. Now, USB mass storage device (lke usb keys) can be used trhough a USB-OTG wire.

Samsung doesn’t want anymore customers… at least with the Galaxy A series.
* Now, there is no more support for MTP/PTP (mass storage was already removed some years ago), so, you can’t anymore connect via USB on any computer and exchange files…
* Worst, USB mass storage media (like USB keys) are not recognised by USB-OTG wire :(. Why do they remove this basic functionnalities found on any Android devices, including 20$ chinese ones.
* Fuckin/Suckin Microsoft applications are added, as Samsung and Google overload was not enough, reducing battry lifetime to nearly nothing. You need lot of work to disable most of them (in settings, applications submenues), and rooting device to have really peace and battry life.

I was very used to buy Samsung phones with Samsung processors, as there was not US ones, because of current wars in several Asian (Irak, Afghanistan…) and African (Libya, etc…) countries. No Us even add lot of money (with their France, Germany, and Saudian Arabia partnerrs) to Daech, as if libyan was not enough. And as Samsung is a weaponry partner of US (like LG and Daewoo). And their are anti electronic-freedom, I will make everything to avoid them…

At the same time, chineses companies make nice phones, like Huawei with their own processors, Xiaomi, but with US, Snapdragon processors, Meizu, and taiwan chineses like Asus or some other made some too. In this area I really prefer Rockchip that work openly with the internationally made Linux kernel, and I hope to found smartphones with those fine processors. Their new generation RK3399 seems really promising for best computing and energy efficient performances. That’s definitivly last time I buy a Samsung phone :(.