Wifi calling was introduced a few months ago by various providers. It only affects mobile telephony, as the internet is used instead of the mobile network for better quality and faster connection. This is not supported on the A5. You can use WhatsApp normally and also make calls via the app.
this should not be a problem. However, the devices are blocked for europe for the time being. in this case, you first have to insert a swiss card and make a few text messages and calls. After that, the device should work worldwide
All the phones we sell have no restrictions and are functional with all operators. So you can use a sim card from any operator.
However, it is possible that a European regional block is installed as standard.
To be able to unlock it and use the phone anywhere in the world, a manipulation must be done before leaving. You need to insert a Swiss or European sim card and make a call from Switzerland for about 5 minutes. Once the call has been made, you will be able to use the phone in all countries.
Hi, I bought the device yesterday (the dualsim version). I was faced with the same question because both have advantages and disadvantages.
Price: Here, the A5 is of course much better positioned (S7 0:1 A5).
Camera: I have to say that the camera of the S7 is much better, especially for low-light shots. Since this point is negligible for me (SLR owner), I didn't give it much weight. (S7 1:1 A5)
Performance: According to the benchmark, the S7 is faster and has a faster processor. Personally, I think it's more in the measurable but not the noticeable range. Although the S7 is actually faster, you don't notice it in everyday life. (S7 2:1 A5)
Battery life: The A5 scores here, because the processor is a little weaker and the resolution is lower, you get an average of around 30% longer battery life. Both devices have the same 3000 mAh battery. (S7 2:2 A5)
Workmanship: I couldn't find any differences here, both are made of metal and glass (including the buttons). (S7 3:3 A5)
Display: The S7 has a higher resolution (QHD vs Full HD). However, I personally could not find any advantage of the higher resolution in practice. In addition, the S7 has a slightly brighter display, which is practical in sunlight, but the difference is small. (S7 4:3 A5)
Overall, the S7 is the better phone, but I think the extra price justifies the marginal difference (except for the camera). I also think it's great that the A5 supports dedicated radio and that USB C is already used. Ultimately, it depends on how much weight you attach to the individual points.
An Android 7.0 update for the A5 is planned by Samsung for this year, but not yet rolled out.
There are some custom ROMS (e.g. Lineage OS 14.1 UNOFFICIAL) that already provide Nougat (7.1.1) for the A5, but this is not recommended if you want to keep warranty and support.
Long story short - "official? - no, not yet"